Check DNS, Urls + Redirects, Certificates and Content of your Website


Info: Problems with 3.048.289 Letsencrypt certificates (378.325 accounts). They must be revoked (revocation starts 2020-03-04 20:00 UTC) - see Revoking certain certificates on March 4. Update 2020-03-07: Good news: Mass-revocation is canceled.

This tool: A check (SerialNumber) is added. Letsencrypt has published a list of critical SerialNumbers, this list is checked. See the part "9. Certificates". If there is a warning, renew that certificate and replace the current certificate.




X

DNS-problem - authoritative Nameserver refused, not defined or timeout

Checked:
13.02.2020 14:24:44


Older results


1. IP-Addresses

HostTIP-Addressis auth.∑ Queries∑ Timeout
duoduo.duckdns.org
A
83.227.79.64
Bromma/Stockholm/Sweden (SE) - Bredbandsbolaget
Hostname: c-404fe353.015-57-616c6b1.bbcust.telenor.se
yes
1
0

AAAA

yes


www.duoduo.duckdns.org
A
83.227.79.64
Bromma/Stockholm/Sweden (SE) - Bredbandsbolaget
Hostname: c-404fe353.015-57-616c6b1.bbcust.telenor.se
yes
1
0

AAAA

yes



2. DNSSEC

Zone (*)DNSSEC - Informations (beta)

Zone: (root)
(root)
1 DS RR published



Status: Valid because published



2 DNSKEY RR found



Public Key with Algorithm 8, KeyTag 20326, Flags 257 (SEP = Secure Entry Point)



Public Key with Algorithm 8, KeyTag 33853, Flags 256



1 RRSIG RR to validate DNSKEY RR found



Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 02.03.2020, 00:00:00, Signature-Inception: 10.02.2020, 00:00:00, KeyTag 20326, Signer-Name: (root)



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 20326 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 8, KeyTag 20326, DigestType 2 and Digest "4G1EuAuPHTmpXAsNfGXQhFjogECbvGg0VxBCN8f47I0=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: org
org
2 DS RR in the parent zone found



1 RRSIG RR to validate DS RR found



Algorithm: 8, 1 Labels, original TTL: 86400 sec, Signature-expiration: 26.02.2020, 05:00:00, Signature-Inception: 13.02.2020, 04:00:00, KeyTag 33853, Signer-Name: (root)



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 33853 used to validate the DS RRSet in the parent zone



4 DNSKEY RR found



Public Key with Algorithm 7, KeyTag 9795, Flags 257 (SEP = Secure Entry Point)



Public Key with Algorithm 7, KeyTag 17883, Flags 257 (SEP = Secure Entry Point)



Public Key with Algorithm 7, KeyTag 33209, Flags 256



Public Key with Algorithm 7, KeyTag 63887, Flags 256



3 RRSIG RR to validate DNSKEY RR found



Algorithm: 7, 1 Labels, original TTL: 900 sec, Signature-expiration: 01.03.2020, 15:28:12, Signature-Inception: 09.02.2020, 14:28:12, KeyTag 9795, Signer-Name: org



Algorithm: 7, 1 Labels, original TTL: 900 sec, Signature-expiration: 01.03.2020, 15:28:12, Signature-Inception: 09.02.2020, 14:28:12, KeyTag 17883, Signer-Name: org



Algorithm: 7, 1 Labels, original TTL: 900 sec, Signature-expiration: 01.03.2020, 15:28:12, Signature-Inception: 09.02.2020, 14:28:12, KeyTag 63887, Signer-Name: org



Status: Good - Algorithmus 7 and DNSKEY with KeyTag 9795 used to validate the DNSKEY RRSet



Status: Good - Algorithmus 7 and DNSKEY with KeyTag 17883 used to validate the DNSKEY RRSet



Status: Good - Algorithmus 7 and DNSKEY with KeyTag 63887 used to validate the DNSKEY RRSet



Status: Valid Chain of trust. Parent-DS with Algorithm 7, KeyTag 9795, DigestType 1 and Digest "Nk36s9ryVMq0d7VnWxB2bdqiSYI=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone



Status: Valid Chain of trust. Parent-DS with Algorithm 7, KeyTag 9795, DigestType 2 and Digest "OSKzG286TqkrGet7UhIPAx/Y4F/wsDuvz5+JG/5/+OU=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: duckdns.org
duckdns.org
0 DS RR in the parent zone found



DS-Query in the parent zone has a valid NSEC3 RR as result with the hashed domain name between the hashed NSEC3-owner and the hashed NextOwner. So the parent zone confirmes the non-existence of a DS RR.Bitmap: NS, DS, RRSIG



0 DNSKEY RR found





Zone: duoduo.duckdns.org
duoduo.duckdns.org
0 DS RR in the parent zone found



0 DNSKEY RR found





Zone: www.duoduo.duckdns.org
www.duoduo.duckdns.org
0 DS RR in the parent zone found


3. Name Servers

DomainNameserverNS-IP
www.duoduo.duckdns.org
U  ns1.duckdns.org


U  ns2.duckdns.org


U  ns3.duckdns.org

duoduo.duckdns.org
U  ns1.duckdns.org
54.187.92.222
Portland/Oregon/United States (US) - Amazon.com, Inc.


U  ns2.duckdns.org
54.191.117.119
Portland/Oregon/United States (US) - Amazon.com, Inc.


U  ns3.duckdns.org
52.26.169.94
Portland/Oregon/United States (US) - Amazon.com, Inc.

duckdns.org
U  ns1.duckdns.org


U  ns2.duckdns.org


U  ns3.duckdns.org

org
  a0.org.afilias-nst.info / ns000a.app1.ams2.afilias-nst.info


  a2.org.afilias-nst.info / 2.fra.pch


  b0.org.afilias-nst.org / ns000b.app4.ams2.afilias-nst.info


  b2.org.afilias-nst.org / 5.fra.pch


  c0.org.afilias-nst.info / app25.iad1.hosts.meta.redstone.afilias-nst.info-2


  d0.org.afilias-nst.org / ns000b.app18.ams2.afilias-nst.info


4. SOA-Entries


Domain:org
Primary:a0.org.afilias-nst.info
Mail:noc.afilias-nst.info
Serial:2013818066
Refresh:1800
Retry:900
Expire:604800
TTL:86400
num Entries:1


Domain:org
Primary:a0.org.afilias-nst.info
Mail:noc.afilias-nst.info
Serial:2013818067
Refresh:1800
Retry:900
Expire:604800
TTL:86400
num Entries:5


Domain:duckdns.org
Primary:ns1.duckdns.org
Mail:hostmaster.duckdns.org
Serial:2019170803
Refresh:6000
Retry:120
Expire:2419200
TTL:600
num Entries:1


Domain:duckdns.org
Primary:ns2.duckdns.org
Mail:hostmaster.duckdns.org
Serial:2019170803
Refresh:6000
Retry:120
Expire:2419200
TTL:600
num Entries:1


Domain:duckdns.org
Primary:ns3.duckdns.org
Mail:hostmaster.duckdns.org
Serial:2019170803
Refresh:6000
Retry:120
Expire:2419200
TTL:600
num Entries:1


Domain:duoduo.duckdns.org
Primary:ns1.duckdns.org
Mail:hostmaster.duckdns.org
Serial:2019170803
Refresh:6000
Retry:120
Expire:2419200
TTL:600
num Entries:1


Domain:duoduo.duckdns.org
Primary:ns2.duckdns.org
Mail:hostmaster.duckdns.org
Serial:2019170803
Refresh:6000
Retry:120
Expire:2419200
TTL:600
num Entries:1


Domain:duoduo.duckdns.org
Primary:ns3.duckdns.org
Mail:hostmaster.duckdns.org
Serial:2019170803
Refresh:6000
Retry:120
Expire:2419200
TTL:600
num Entries:1


Domain:www.duoduo.duckdns.org
Primary:ns1.duckdns.org
Mail:hostmaster.duckdns.org
Serial:2019170803
Refresh:6000
Retry:120
Expire:2419200
TTL:600
num Entries:1


Domain:www.duoduo.duckdns.org
Primary:ns2.duckdns.org
Mail:hostmaster.duckdns.org
Serial:2019170803
Refresh:6000
Retry:120
Expire:2419200
TTL:600
num Entries:1


Domain:www.duoduo.duckdns.org
Primary:ns3.duckdns.org
Mail:hostmaster.duckdns.org
Serial:2019170803
Refresh:6000
Retry:120
Expire:2419200
TTL:600
num Entries:1


5. Screenshots (Beta)

Startaddress: https://duoduo.duckdns.org, address used: https://duoduo.duckdns.org/, Screenshot created 2020-02-13 14:27:40 +00:0 url is insecure, certificate invalid

Mobil (412px x 732px)

328 milliseconds

Screenshot mobile - https://duoduo.duckdns.org/
Screen (1280px x 1680px)

543 milliseconds

Screenshot Desktop - https://duoduo.duckdns.org/
Mobil + Landscape (732px x 412px)

336 milliseconds

Screenshot mobile landscape - https://duoduo.duckdns.org/

Mobile- and other Chrome-Checks

widthheight
visual Viewport412716
content Size520716

Fatal: Horizontal scrollbar detected. Content-size width is greater then visual Viewport width.

Chrome-Connection: secure. secure connection settings. The connection to this site is encrypted and authenticated using TLS 1.3, X25519, and AES_128_GCM.

Chrome-Resources : secure. all served securely. All resources on this page are served securely.

6. Url-Checks


:

:
Domainname Http-StatusredirectSec.G
• http://duoduo.duckdns.org/
83.227.79.64
301
https://duoduo.duckdns.org/
Html is minified: 109.03 %
0.640
A
Server: nginx/1.16.1
Date: Thu, 13 Feb 2020 13:27:00 GMT
Content-Type: text/html
Content-Length: 169
Connection: close
Location: https://duoduo.duckdns.org/

• http://www.duoduo.duckdns.org/
83.227.79.64
301
https://www.duoduo.duckdns.org/
Html is minified: 109.03 %
0.110
A
Server: nginx/1.16.1
Date: Thu, 13 Feb 2020 13:27:00 GMT
Content-Type: text/html
Content-Length: 169
Connection: close
Location: https://www.duoduo.duckdns.org/

• https://duoduo.duckdns.org/
83.227.79.64 GZip used - 490 / 1286 - 61.90 %
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 1/541
200

Html is minified: 224.83 %
2.610
N
Certificate error: RemoteCertificateNameMismatch, RemoteCertificateChainErrors
Server: nginx/1.16.1
Date: Thu, 13 Feb 2020 13:27:00 GMT
Content-Type: text/html
Last-Modified: Wed, 12 Feb 2020 19:42:52 GMT
Transfer-Encoding: chunked
Connection: close
ETag: W/"5e44553c-506"
Content-Encoding: gzip

• https://www.duoduo.duckdns.org/
83.227.79.64 GZip used - 490 / 1286 - 61.90 %
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 1/541
200

Html is minified: 224.83 %
3.623
N
Certificate error: RemoteCertificateChainErrors
Server: nginx/1.16.1
Date: Thu, 13 Feb 2020 13:27:03 GMT
Content-Type: text/html
Last-Modified: Wed, 12 Feb 2020 19:42:52 GMT
Transfer-Encoding: chunked
Connection: close
ETag: W/"5e44553c-506"
Content-Encoding: gzip

• http://duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
83.227.79.64
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
301
https://duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Html is minified: 109.03 %
0.110
A
Visible Content: 301 Moved Permanently nginx/1.16.1
Server: nginx/1.16.1
Date: Thu, 13 Feb 2020 13:27:07 GMT
Content-Type: text/html
Content-Length: 169
Connection: close
Location: https://duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de

• http://www.duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
83.227.79.64
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 0/0
301
https://www.duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
Html is minified: 109.03 %
0.093
A
Visible Content: 301 Moved Permanently nginx/1.16.1
Server: nginx/1.16.1
Date: Thu, 13 Feb 2020 13:27:07 GMT
Content-Type: text/html
Content-Length: 169
Connection: close
Location: https://www.duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de

• https://duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
GZip used - 490 / 1286 - 61.90 %
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 1/541
200

Html is minified: 224.83 %
3.687
N
Certificate error: RemoteCertificateNameMismatch, RemoteCertificateChainErrors
Visible Content: Welcome to DuoDuo's server Access Router through https://router.duoduo.duckdns.org Access HA through https://homeassistant.duoduo.duckdns.org Access Jellyfin through https://duoduo.duckdns.org:8920 For help and support, please contact: duoduo.x@gmail.com
Server: nginx/1.16.1
Date: Thu, 13 Feb 2020 13:27:07 GMT
Content-Type: text/html
Last-Modified: Wed, 12 Feb 2020 19:42:52 GMT
Transfer-Encoding: chunked
Connection: close
ETag: W/"5e44553c-506"
Content-Encoding: gzip

• https://www.duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
GZip used - 490 / 1286 - 61.90 %
Inline-JavaScript (∑/total): 0/0 Inline-CSS (∑/total): 1/541
200

Html is minified: 224.83 %
3.550
N
Certificate error: RemoteCertificateChainErrors
Visible Content: Welcome to DuoDuo's server Access Router through https://router.duoduo.duckdns.org Access HA through https://homeassistant.duoduo.duckdns.org Access Jellyfin through https://duoduo.duckdns.org:8920 For help and support, please contact: duoduo.x@gmail.com
Server: nginx/1.16.1
Date: Thu, 13 Feb 2020 13:27:11 GMT
Content-Type: text/html
Last-Modified: Wed, 12 Feb 2020 19:42:52 GMT
Transfer-Encoding: chunked
Connection: close
ETag: W/"5e44553c-506"
Content-Encoding: gzip

7. Comments

Aname "duoduo.duckdns.org" is domain, public suffix is "duckdns.org", top-level-domain-type is "generic", tld-manager is "Public Interest Registry (PIR)"
Agood: All ip addresses are public addresses
Agood: destination is https
HSTS-Preload-Status: unknown. Domain never included in the Preload-list. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.
AGood: Some urls with http status 200/404 have a complete Content-Type header (MediaType / MediaSubType + correct charset):0 complete Content-Type - header (4 urls)
https://duoduo.duckdns.org/ 83.227.79.64


Url with incomplete Content-Type - header - missing charset
https://www.duoduo.duckdns.org/ 83.227.79.64


Url with incomplete Content-Type - header - missing charset
https://duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de


Url with incomplete Content-Type - header - missing charset
https://www.duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de


Url with incomplete Content-Type - header - missing charset
Ahttp://duoduo.duckdns.org/ 83.227.79.64
301
https://duoduo.duckdns.org/
correct redirect http - https with the same domain name
Ahttp://www.duoduo.duckdns.org/ 83.227.79.64
301
https://www.duoduo.duckdns.org/
correct redirect http - https with the same domain name
Bhttps://duoduo.duckdns.org/ 83.227.79.64
200

Missing HSTS-Header
Bhttps://www.duoduo.duckdns.org/ 83.227.79.64
200

Missing HSTS-Header
CError - no preferred version www or non-www. Select one version as preferred version, then add a redirect https + not-preferred version to https + preferred version. Perhaps in your port 443 vHost something like "RewriteEngine on" + "RewriteCond %{SERVER_NAME} = example.com" + "ReWriteRule ^ https://www.example.com%{REQUEST_URI} [END,QSA,R=permanent]" (three rows, without the "). That should create a redirect https + example.com ⇒ https + www.example.com. Or switch both values to use the non-www version as your preferred version.
CError - more then one version with Http-Status 200. After all redirects, all users (and search engines) should see the same https url: Non-www or www, but not both with http status 200.
Nhttps://duoduo.duckdns.org/ 83.227.79.64
200

Error - Certificate isn't trusted, RemoteCertificateNameMismatch, RemoteCertificateChainErrors
Nhttps://www.duoduo.duckdns.org/ 83.227.79.64
200

Error - Certificate isn't trusted, RemoteCertificateChainErrors
Nhttps://duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
200

Error - Certificate isn't trusted, RemoteCertificateNameMismatch, RemoteCertificateChainErrors
Nhttps://www.duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
200

Error - Certificate isn't trusted, RemoteCertificateChainErrors
XFatal error: Nameserver isn't defined or has timeout
XFatal error: Nameserver doesn't support TCP connection: ns1.duckdns.org: Fatal error - no NameServer IP-Address or connection. Details: One or more errors occurred. - Es konnte keine Verbindung hergestellt werden, da der Zielcomputer die Verbindung verweigerte 54.187.92.222:53
XFatal error: Nameserver doesn't support TCP connection: ns1.duckdns.org / 54.187.92.222: Fatal error - no NameServer IP-Address or connection. Details: One or more errors occurred. - Es konnte keine Verbindung hergestellt werden, da der Zielcomputer die Verbindung verweigerte 54.187.92.222:53
XFatal error: Nameserver doesn't support TCP connection: ns2.duckdns.org: Fatal error - no NameServer IP-Address or connection. Details: One or more errors occurred. - Es konnte keine Verbindung hergestellt werden, da der Zielcomputer die Verbindung verweigerte 54.191.117.119:53
XFatal error: Nameserver doesn't support TCP connection: ns2.duckdns.org / 54.191.117.119: Fatal error - no NameServer IP-Address or connection. Details: One or more errors occurred. - Es konnte keine Verbindung hergestellt werden, da der Zielcomputer die Verbindung verweigerte 54.191.117.119:53
XFatal error: Nameserver doesn't support TCP connection: ns3.duckdns.org: Fatal error - no NameServer IP-Address or connection. Details: One or more errors occurred. - Es konnte keine Verbindung hergestellt werden, da der Zielcomputer die Verbindung verweigerte 52.26.169.94:53
XFatal error: Nameserver doesn't support TCP connection: ns3.duckdns.org / 52.26.169.94: Fatal error - no NameServer IP-Address or connection. Details: One or more errors occurred. - Es konnte keine Verbindung hergestellt werden, da der Zielcomputer die Verbindung verweigerte 52.26.169.94:53
AGood: Nameserver supports Echo Capitalization: 3 good Nameserver
AGood: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 3 good Nameserver
Nameserver doesn't pass all EDNS-Checks: b0.org.afilias-nst.org: OP100: ok. FLAGS: ok. V1: fatal timeout. V1OP100: ok. V1FLAGS: ok. DNSSEC: ok. V1DNSSEC: ok. NSID: ok (ns000b.app4.ams2.afilias-nst.info). COOKIE: ok. CLIENTSUBNET: ok.
Nameserver doesn't pass all EDNS-Checks: ns1.duckdns.org: OP100: ok. FLAGS: ok. V1: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. V1OP100: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found, no OPT100 expected, no OPT100 found. V1FLAGS: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. DNSSEC: ok. V1DNSSEC: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. NSID: ok. COOKIE: ok. CLIENTSUBNET: ok.
Nameserver doesn't pass all EDNS-Checks: ns1.duckdns.org: OP100: ok. FLAGS: ok. V1: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. V1OP100: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found, no OPT100 expected, no OPT100 found. V1FLAGS: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. DNSSEC: ok. V1DNSSEC: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. NSID: ok. COOKIE: ok. CLIENTSUBNET: ok.
Nameserver doesn't pass all EDNS-Checks: ns1.duckdns.org / 54.187.92.222: OP100: ok. FLAGS: ok. V1: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. V1OP100: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found, no OPT100 expected, no OPT100 found. V1FLAGS: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. DNSSEC: ok. V1DNSSEC: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. NSID: ok. COOKIE: ok. CLIENTSUBNET: ok.
Nameserver doesn't pass all EDNS-Checks: ns2.duckdns.org: OP100: ok. FLAGS: ok. V1: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. V1OP100: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found, no OPT100 expected, no OPT100 found. V1FLAGS: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. DNSSEC: ok. V1DNSSEC: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. NSID: ok. COOKIE: ok. CLIENTSUBNET: ok.
Nameserver doesn't pass all EDNS-Checks: ns2.duckdns.org: OP100: ok. FLAGS: ok. V1: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. V1OP100: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found, no OPT100 expected, no OPT100 found. V1FLAGS: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. DNSSEC: ok. V1DNSSEC: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. NSID: ok. COOKIE: ok. CLIENTSUBNET: ok.
Nameserver doesn't pass all EDNS-Checks: ns2.duckdns.org / 54.191.117.119: OP100: ok. FLAGS: ok. V1: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. V1OP100: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found, no OPT100 expected, no OPT100 found. V1FLAGS: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. DNSSEC: ok. V1DNSSEC: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. NSID: ok. COOKIE: ok. CLIENTSUBNET: ok.
Nameserver doesn't pass all EDNS-Checks: ns3.duckdns.org: OP100: ok. FLAGS: ok. V1: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. V1OP100: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found, no OPT100 expected, no OPT100 found. V1FLAGS: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. DNSSEC: ok. V1DNSSEC: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. NSID: ok. COOKIE: ok. CLIENTSUBNET: ok.
Nameserver doesn't pass all EDNS-Checks: ns3.duckdns.org: OP100: ok. FLAGS: ok. V1: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. V1OP100: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found, no OPT100 expected, no OPT100 found. V1FLAGS: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. DNSSEC: ok. V1DNSSEC: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. NSID: ok. COOKIE: ok. CLIENTSUBNET: ok.
Nameserver doesn't pass all EDNS-Checks: ns3.duckdns.org / 52.26.169.94: OP100: ok. FLAGS: ok. V1: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. V1OP100: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found, no OPT100 expected, no OPT100 found. V1FLAGS: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. DNSSEC: ok. V1DNSSEC: SOA NOT expected, but found, BADVER expected, NOERR found, Version 0 expectend and found. NSID: ok. COOKIE: ok. CLIENTSUBNET: ok.
AGood: All SOA have the same Serial Number
AGood: Consistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Ordered list of name servers: ns1.duckdns.org,ns2.duckdns.org,ns3.duckdns.org
Warning: No CAA entry with issue/issuewild found, every CAA can create a certificate. Read https://en.wikipedia.org/wiki/DNS_Certification_Authority_Authorization to learn some basics about the idea of CAA. Your name server must support such an entry. Not all dns providers support CAA entries.
AGood: Every https result with status 200 supports GZip.
https://duoduo.duckdns.org/ 83.227.79.64
200

Warning: Https + http status 200 + Inline CSS / JavaScript found. Don't use inline CSS / JavaScript. These are compiled and re-used ressources, save these with a long Cache-Control max-age - header.
https://www.duoduo.duckdns.org/ 83.227.79.64
200

Warning: Https + http status 200 + Inline CSS / JavaScript found. Don't use inline CSS / JavaScript. These are compiled and re-used ressources, save these with a long Cache-Control max-age - header.
https://duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
200

Warning: Https + http status 200 + Inline CSS / JavaScript found. Don't use inline CSS / JavaScript. These are compiled and re-used ressources, save these with a long Cache-Control max-age - header.
https://www.duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
200

Warning: Https + http status 200 + Inline CSS / JavaScript found. Don't use inline CSS / JavaScript. These are compiled and re-used ressources, save these with a long Cache-Control max-age - header.
https://duoduo.duckdns.org/ 83.227.79.64
200

Warning: Https result with status 200 found, Html-Content is too big. Should be max. 110 %. May contain inline CSS / JavaScript, too much comments or white space. Re-used ressources - create files with a long Cache-Control max-age header. Remove comments and white space.
https://www.duoduo.duckdns.org/ 83.227.79.64
200

Warning: Https result with status 200 found, Html-Content is too big. Should be max. 110 %. May contain inline CSS / JavaScript, too much comments or white space. Re-used ressources - create files with a long Cache-Control max-age header. Remove comments and white space.
https://duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
200

Warning: Https result with status 200 found, Html-Content is too big. Should be max. 110 %. May contain inline CSS / JavaScript, too much comments or white space. Re-used ressources - create files with a long Cache-Control max-age header. Remove comments and white space.
https://www.duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
200

Warning: Https result with status 200 found, Html-Content is too big. Should be max. 110 %. May contain inline CSS / JavaScript, too much comments or white space. Re-used ressources - create files with a long Cache-Control max-age header. Remove comments and white space.
AGood: Every https connection via port 443 supports the http/2 protocol via ALPN.
AGood: All checked attribute values are enclosed in quotation marks (" or ').
AInfo: No img element found, no alt attribute checked
AGood: Domainname is not on the "Specially Designated Nationals And Blocked Persons List" (SDN). That's an US-list of individuals and companies owned or controlled by, or acting for or on behalf of, targeted countries. It also lists individuals, groups, and entities, such as terrorists and narcotics traffickers designated under programs that are not country-specific. Collectively, such individuals and companies are called "Specially Designated Nationals" or "SDNs." Their assets are blocked and U.S. persons are generally prohibited from dealing with them. So if a domain name is on that list, it's impossible to create a Letsencrypt certificate with that domain name. Check the list manual - https://www.treasury.gov/resource-center/sanctions/sdn-list/pages/default.aspx
ADuration: 180233 milliseconds, 180.233 seconds


8. Connections

DomainIPPortCert.ProtocolKeyExchangeStrengthCipherStrengthHashAlgorithmOCSP stapling
Domain/KeyExchangeIP/StrengthPort/CipherCert./StrengthProtocol/HashAlgorithmOCSP stapling
duoduo.duckdns.org
83.227.79.64
443
Certificate/chain invalid and wrong name
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
error checking OCSP stapling
ok
duoduo.duckdns.org
83.227.79.64
443
Certificate/chain invalid and wrong name
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
error checking OCSP stapling
ok
http/2 via ALPN supported  Tls.1.2
no Tls.1.1
no Tls.1.0
http/2 via ALPN supported Tls.1.2
no Tls.1.1
no Tls.1.0
Chain (complete)
1CN=*.duoduo.duckdns.org

2CN=Fake LE Intermediate X1

www.duoduo.duckdns.org
83.227.79.64
443
Certificate/chain invalid
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
supported
ok
www.duoduo.duckdns.org
83.227.79.64
443
Certificate/chain invalid
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
supported
ok
http/2 via ALPN supported  Tls.1.2
no Tls.1.1
no Tls.1.0
http/2 via ALPN supported Tls.1.2
no Tls.1.1
no Tls.1.0
Chain (complete)
1CN=*.duoduo.duckdns.org

2CN=Fake LE Intermediate X1

duoduo.duckdns.org
duoduo.duckdns.org
443
Certificate/chain invalid and wrong name
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
supported
ok
duoduo.duckdns.org
duoduo.duckdns.org
443
Certificate/chain invalid and wrong name
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
supported
ok
http/2 via ALPN supported  Tls.1.2
no Tls.1.1
no Tls.1.0
http/2 via ALPN supported Tls.1.2
no Tls.1.1
no Tls.1.0
Chain (complete)
1CN=*.duoduo.duckdns.org

2CN=Fake LE Intermediate X1

www.duoduo.duckdns.org
www.duoduo.duckdns.org
443
Certificate/chain invalid
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
supported
ok
www.duoduo.duckdns.org
www.duoduo.duckdns.org
443
Certificate/chain invalid
Tls12

ECDH Ephermal
255
Aes256
256
Sha384
supported
ok
http/2 via ALPN supported  Tls.1.2
no Tls.1.1
no Tls.1.0
http/2 via ALPN supported Tls.1.2
no Tls.1.1
no Tls.1.0
Chain (complete)
1CN=*.duoduo.duckdns.org

2CN=Fake LE Intermediate X1


9. Certificates

1.
1.
CN=*.duoduo.duckdns.org
13.02.2020
13.05.2020
expires in 44 days
*.duoduo.duckdns.org - 1 entry
1.
1.
CN=*.duoduo.duckdns.org
13.02.2020

13.05.2020
expires in 44 days
*.duoduo.duckdns.org - 1 entry

KeyalgorithmRSA encryption (4096 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:00FA913D6A3179051786B105E17421A2F8C528
Thumbprint:993204EAA2F668CFFD44E941D2E0774441E99130
SHA256 / Certificate:fnml7Th0E64UmQRVc2Zxlwv1awpi+arai6dP2W+bsL0=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):9492c60965c93f9b4bc01ad52d47a75e8c919bcf33e86b3b522b18d0fb90d808
SHA256 hex / Subject Public Key Information (SPKI):87469dec7ecec87601d17435ff73234f63de7060d3170bfe2d28bb7ba78187c8
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:http://ocsp.stg-int-x1.letsencrypt.org
OCSP - must staple:no
Certificate Transparency:yes

RevocationStatusUnknown: The revocation function was unable to check revocation for the certificate.
OfflineRevocation: The revocation function was unable to check revocation because the revocation server was offline.

2.
CN=Fake LE Intermediate X1
24.05.2016
24.05.2036
expires in 5899 days


2.
CN=Fake LE Intermediate X1
24.05.2016

24.05.2036
expires in 5899 days


KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:008BE12A0E5944ED3C546431F097614FE5
Thumbprint:4EEE7398C1A3DAF91DA16689DB8243927A271B9A
SHA256 / Certificate:qZwbcdoyrdlClxT3HnQK/cVDxPfwEqdI0kp4m4vz1sc=
SHA256 hex / Cert (DANE * 0 1):a99c1b71da32add9429714f71e740afdc543c4f7f012a748d24a789b8bf3d6c7
SHA256 hex / PublicKey (DANE * 1 1):25ec31d428b56d5f8d9b09432ad80276097501a242e17ec6ea5c95810c712c02
SHA256 hex / Subject Public Key Information (SPKI):eeef088b15107dce60cd5833cf33ac985137b471080e052dd439d243e088b391
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:http://ocsp.stg-root-x1.letsencrypt.org/
OCSP - must staple:no
Certificate Transparency:no


3.
CN=Fake LE Root X1
23.03.2016
23.03.2036
expires in 5837 days


3.
CN=Fake LE Root X1
23.03.2016

23.03.2036
expires in 5837 days


KeyalgorithmRSA encryption (4096 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:00A73D64A0404B29B2E532CE129E7B37DF
Thumbprint:B3F73C419DAC14711F4B97192BF89C7DEA7A7794
SHA256 / Certificate:IZxP/PsE8dOtbKebK1xsD0STF3qA+jfM5/yaMt8oMj0=
SHA256 hex / Cert (DANE * 0 1):219c4ffcfb04f1d3ad6ca79b2b5c6c0f4493177a80fa37cce7fc9a32df28323d
SHA256 hex / PublicKey (DANE * 1 1):5b7b5b32631b6ad5e6dcabbc7b21b6b23334b9345e90b22caa2c27770bb9da8d
SHA256 hex / Subject Public Key Information (SPKI):7ee7db7b796dc3823ad6d35a4b98d2ad4cc5d6e62be7e2fb24d148d06ffe59f3
SPKI checked via https://v1.pwnedkeys.com/spki-hash:Good: Key isn't compromised
OCSP - Url:
OCSP - must staple:no
Certificate Transparency:no



10. Last Certificates - Certificate Transparency Log Check

1. Source CertSpotter - active certificates (one check per day)

Issuerlast 7 daysactivenum Certs
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
0
2
3

CertSpotter-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
1427932286
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-12 17:38:49
2020-05-12 17:38:49
duoduo.duckdns.org - 1 entries


1403912204
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-01 16:13:57
2020-05-01 16:13:57
duoduo.duckdns.org - 1 entries


1265378930
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-11-24 18:33:13
2020-02-22 18:33:13
duoduo.duckdns.org - 1 entries



2. Source crt.sh - old and new certificates, sometimes very slow (Update 2020-01-11: Should now work again - code updated. Old message: currently no newer certificates - read Crt.sh has stopped - Letsencrypt-forum - may work next week again - 2019-12-02 - but I must check the code).

Issuerlast 7 daysactivenum Certs
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
0 /0 new
8
24

CRT-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
2454965936
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-12 16:38:49
2020-05-12 15:38:49
duoduo.duckdns.org
1 entries


2439065308
precert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-06 18:24:36
2020-05-06 17:24:36
*.duoduo.duckdns.org
1 entries


2439061935
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-06 18:19:45
2020-05-06 17:19:45
*.duoduo.duckdns.org
1 entries


2439057050
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-06 18:14:57
2020-05-06 17:14:57
*.duoduo.duckdns.org
1 entries


2439041477
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-06 17:58:53
2020-05-06 16:58:53
*.duoduo.duckdns.org
1 entries


2439038567
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-06 17:54:31
2020-05-06 16:54:31
*.duoduo.duckdns.org
1 entries


2425316984
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-02-01 15:13:57
2020-05-01 14:13:57
duoduo.duckdns.org
1 entries


2374973009
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2020-01-23 23:11:54
2020-04-22 22:11:54
*.duoduo.duckdns.org
1 entries


2156639563
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-11-24 23:11:26
2020-02-22 23:11:26
*.duoduo.duckdns.org
1 entries


2154723323
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-11-24 17:33:13
2020-02-22 17:33:13
duoduo.duckdns.org
1 entries


1956913840
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-09-25 15:34:49
2019-12-24 16:34:49
*.duoduo.duckdns.org
1 entries


1956904982
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-09-25 15:31:28
2019-12-24 16:31:28
duoduo.duckdns.org
1 entries


1851771337
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-08-25 11:46:09
2019-11-23 12:46:09
duoduo.duckdns.org
1 entries


1845221000
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-08-22 17:18:43
2019-11-20 18:18:43
*.duoduo.duckdns.org
1 entries


1646600268
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-06-25 18:01:18
2019-09-23 18:01:18
*.duoduo.duckdns.org
1 entries


1646469917
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-06-25 17:34:21
2019-09-23 17:34:21
*.duoduo.duckdns.org
1 entries


1646441771
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-06-25 17:28:06
2019-09-23 17:28:06
*.duoduo.duckdns.org
1 entries


1646415333
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-06-25 17:22:29
2019-09-23 17:22:29
*.duoduo.duckdns.org
1 entries


1605048466
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-06-14 17:47:49
2019-09-12 17:47:49
*.duoduo.duckdns.org
1 entries


1603270808
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-06-13 19:51:43
2019-09-11 19:51:43
duoduo.duckdns.org
1 entries


1485039784
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-05-12 18:13:06
2019-08-10 18:13:06
duoduo.duckdns.org
1 entries


1325356789
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-03-20 21:11:58
2019-06-18 20:11:58
duoduo.duckdns.org
1 entries


1125565152
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-01-19 17:49:10
2019-04-19 16:49:10
duoduo.duckdns.org
1 entries


962510951
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2018-11-20 16:49:33
2019-02-18 16:49:33
duoduo.duckdns.org
1 entries



11. Html-Content - Entries

Summary

Subresource Integrity (SRI)
DomainnameHtmlElementrel/property∑ size∑ problems∑ int.∑ ext.∑ Origin poss.∑ SRI ParseErrors∑ SRI valid∑ SRI missing
https://duoduo.duckdns.org/
83.227.79.64
a

4

0


0
0
0

https://www.duoduo.duckdns.org/
83.227.79.64
a

4

0


0
0
0

Details

DomainnameHtml-Elementname/equiv/ property/relhref/src/contentHttpStatusmsgStatus
https://duoduo.duckdns.org/
83.227.79.64
a

duoduo.x@gmail.com


1
ok








a

https://duoduo.duckdns.org:8920


1
ok








a

https://homeassistant.duoduo.duckdns.org


1
ok








a

https://router.duoduo.duckdns.org


1
ok







https://www.duoduo.duckdns.org/
83.227.79.64
a

duoduo.x@gmail.com


1
ok








a

https://duoduo.duckdns.org:8920


1
ok








a

https://homeassistant.duoduo.duckdns.org


1
ok








a

https://router.duoduo.duckdns.org


1
ok








12. CAA - Entries

DomainnameflagNameValue∑ Queries∑ Timeout
www.duoduo.duckdns.org



1
0
duoduo.duckdns.org



1
0
duckdns.org
0

no CAA entry found
1
0
org
0

no CAA entry found
1
0


13. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
duoduo.duckdns.org
ttIp7dC_HgsdjejctkKzb3vmuIdOt3xvEWPHWu1Nb0E
looks good, but no _acme-challenge in domain name?
1
0
www.duoduo.duckdns.org
ttIp7dC_HgsdjejctkKzb3vmuIdOt3xvEWPHWu1Nb0E
looks good, but no _acme-challenge in domain name?
1
0
_acme-challenge.duoduo.duckdns.org
ttIp7dC_HgsdjejctkKzb3vmuIdOt3xvEWPHWu1Nb0E
looks good, correct length, correct characters
1
0
_acme-challenge.www.duoduo.duckdns.org
ttIp7dC_HgsdjejctkKzb3vmuIdOt3xvEWPHWu1Nb0E
looks good, correct length, correct characters
1
0
_acme-challenge.duoduo.duckdns.org.duoduo.duckdns.org
ttIp7dC_HgsdjejctkKzb3vmuIdOt3xvEWPHWu1Nb0E
perhaps wrong
1
0
_acme-challenge.www.duoduo.duckdns.org.duoduo.duckdns.org
ttIp7dC_HgsdjejctkKzb3vmuIdOt3xvEWPHWu1Nb0E
perhaps wrong
1
0
_acme-challenge.www.duoduo.duckdns.org.www.duoduo.duckdns.org
ttIp7dC_HgsdjejctkKzb3vmuIdOt3xvEWPHWu1Nb0E
perhaps wrong
1
0


14. Portchecks

Domain or IPPortDescriptionResultAnswer
duoduo.duckdns.org
21
FTP



duoduo.duckdns.org
21
FTP



duoduo.duckdns.org
22
SSH



duoduo.duckdns.org
22
SSH



duoduo.duckdns.org
25
SMTP



duoduo.duckdns.org
25
SMTP



duoduo.duckdns.org
53
DNS



duoduo.duckdns.org
53
DNS



duoduo.duckdns.org
110
POP3



duoduo.duckdns.org
110
POP3



duoduo.duckdns.org
143
IMAP



duoduo.duckdns.org
143
IMAP



duoduo.duckdns.org
465
SMTP (encrypted)



duoduo.duckdns.org
465
SMTP (encrypted)



duoduo.duckdns.org
587
SMTP (encrypted, submission)



duoduo.duckdns.org
587
SMTP (encrypted, submission)



duoduo.duckdns.org
993
IMAP (encrypted)



duoduo.duckdns.org
993
IMAP (encrypted)



duoduo.duckdns.org
995
POP3 (encrypted)



duoduo.duckdns.org
995
POP3 (encrypted)



duoduo.duckdns.org
1433
MS SQL



duoduo.duckdns.org
1433
MS SQL



duoduo.duckdns.org
2082
cPanel (http)



duoduo.duckdns.org
2082
cPanel (http)



duoduo.duckdns.org
2083
cPanel (https)



duoduo.duckdns.org
2083
cPanel (https)



duoduo.duckdns.org
2086
WHM (http)



duoduo.duckdns.org
2086
WHM (http)



duoduo.duckdns.org
2087
WHM (https)



duoduo.duckdns.org
2087
WHM (https)



duoduo.duckdns.org
2089
cPanel Licensing



duoduo.duckdns.org
2089
cPanel Licensing



duoduo.duckdns.org
2095
cPanel Webmail (http)



duoduo.duckdns.org
2095
cPanel Webmail (http)



duoduo.duckdns.org
2096
cPanel Webmail (https)



duoduo.duckdns.org
2096
cPanel Webmail (https)



duoduo.duckdns.org
2222
DirectAdmin (http)



duoduo.duckdns.org
2222
DirectAdmin (http)



duoduo.duckdns.org
2222
DirectAdmin (https)



duoduo.duckdns.org
2222
DirectAdmin (https)



duoduo.duckdns.org
3306
mySql



duoduo.duckdns.org
3306
mySql



duoduo.duckdns.org
5224
Plesk Licensing



duoduo.duckdns.org
5224
Plesk Licensing



duoduo.duckdns.org
5432
PostgreSQL



duoduo.duckdns.org
5432
PostgreSQL



duoduo.duckdns.org
8080
Ookla Speedtest (http)



duoduo.duckdns.org
8080
Ookla Speedtest (http)



duoduo.duckdns.org
8080
Ookla Speedtest (https)



duoduo.duckdns.org
8080
Ookla Speedtest (https)



duoduo.duckdns.org
8083
VestaCP http



duoduo.duckdns.org
8083
VestaCP http



duoduo.duckdns.org
8083
VestaCP https



duoduo.duckdns.org
8083
VestaCP https



duoduo.duckdns.org
8443
Plesk Administration (https)



duoduo.duckdns.org
8443
Plesk Administration (https)



duoduo.duckdns.org
8447
Plesk Installer + Updates



duoduo.duckdns.org
8447
Plesk Installer + Updates



duoduo.duckdns.org
8880
Plesk Administration (http)



duoduo.duckdns.org
8880
Plesk Administration (http)



duoduo.duckdns.org
10000
Webmin (http)



duoduo.duckdns.org
10000
Webmin (http)



duoduo.duckdns.org
10000
Webmin (https)



duoduo.duckdns.org
10000
Webmin (https)



www.duoduo.duckdns.org
21
FTP



www.duoduo.duckdns.org
21
FTP



www.duoduo.duckdns.org
22
SSH



www.duoduo.duckdns.org
22
SSH



www.duoduo.duckdns.org
25
SMTP



www.duoduo.duckdns.org
25
SMTP



www.duoduo.duckdns.org
53
DNS



www.duoduo.duckdns.org
53
DNS



www.duoduo.duckdns.org
110
POP3



www.duoduo.duckdns.org
110
POP3



www.duoduo.duckdns.org
143
IMAP



www.duoduo.duckdns.org
143
IMAP



www.duoduo.duckdns.org
465
SMTP (encrypted)



www.duoduo.duckdns.org
465
SMTP (encrypted)



www.duoduo.duckdns.org
587
SMTP (encrypted, submission)



www.duoduo.duckdns.org
587
SMTP (encrypted, submission)



www.duoduo.duckdns.org
993
IMAP (encrypted)



www.duoduo.duckdns.org
993
IMAP (encrypted)



www.duoduo.duckdns.org
995
POP3 (encrypted)



www.duoduo.duckdns.org
995
POP3 (encrypted)



www.duoduo.duckdns.org
1433
MS SQL



www.duoduo.duckdns.org
1433
MS SQL



www.duoduo.duckdns.org
2082
cPanel (http)



www.duoduo.duckdns.org
2082
cPanel (http)



www.duoduo.duckdns.org
2083
cPanel (https)



www.duoduo.duckdns.org
2083
cPanel (https)



www.duoduo.duckdns.org
2086
WHM (http)



www.duoduo.duckdns.org
2086
WHM (http)



www.duoduo.duckdns.org
2087
WHM (https)



www.duoduo.duckdns.org
2087
WHM (https)



www.duoduo.duckdns.org
2089
cPanel Licensing



www.duoduo.duckdns.org
2089
cPanel Licensing



www.duoduo.duckdns.org
2095
cPanel Webmail (http)



www.duoduo.duckdns.org
2095
cPanel Webmail (http)



www.duoduo.duckdns.org
2096
cPanel Webmail (https)



www.duoduo.duckdns.org
2096
cPanel Webmail (https)



www.duoduo.duckdns.org
2222
DirectAdmin (http)



www.duoduo.duckdns.org
2222
DirectAdmin (http)



www.duoduo.duckdns.org
2222
DirectAdmin (https)



www.duoduo.duckdns.org
2222
DirectAdmin (https)



www.duoduo.duckdns.org
3306
mySql



www.duoduo.duckdns.org
3306
mySql



www.duoduo.duckdns.org
5224
Plesk Licensing



www.duoduo.duckdns.org
5224
Plesk Licensing



www.duoduo.duckdns.org
5432
PostgreSQL



www.duoduo.duckdns.org
5432
PostgreSQL



www.duoduo.duckdns.org
8080
Ookla Speedtest (http)



www.duoduo.duckdns.org
8080
Ookla Speedtest (http)



www.duoduo.duckdns.org
8080
Ookla Speedtest (https)



www.duoduo.duckdns.org
8080
Ookla Speedtest (https)



www.duoduo.duckdns.org
8083
VestaCP http



www.duoduo.duckdns.org
8083
VestaCP http



www.duoduo.duckdns.org
8083
VestaCP https



www.duoduo.duckdns.org
8083
VestaCP https



www.duoduo.duckdns.org
8443
Plesk Administration (https)



www.duoduo.duckdns.org
8443
Plesk Administration (https)



www.duoduo.duckdns.org
8447
Plesk Installer + Updates



www.duoduo.duckdns.org
8447
Plesk Installer + Updates



www.duoduo.duckdns.org
8880
Plesk Administration (http)



www.duoduo.duckdns.org
8880
Plesk Administration (http)



www.duoduo.duckdns.org
10000
Webmin (http)



www.duoduo.duckdns.org
10000
Webmin (http)



www.duoduo.duckdns.org
10000
Webmin (https)



www.duoduo.duckdns.org
10000
Webmin (https)



83.227.79.64
21
FTP



83.227.79.64
21
FTP



83.227.79.64
22
SSH



83.227.79.64
22
SSH



83.227.79.64
25
SMTP



83.227.79.64
25
SMTP



83.227.79.64
53
DNS



83.227.79.64
53
DNS



83.227.79.64
110
POP3



83.227.79.64
110
POP3



83.227.79.64
143
IMAP



83.227.79.64
143
IMAP



83.227.79.64
465
SMTP (encrypted)



83.227.79.64
465
SMTP (encrypted)



83.227.79.64
587
SMTP (encrypted, submission)



83.227.79.64
587
SMTP (encrypted, submission)



83.227.79.64
993
IMAP (encrypted)



83.227.79.64
993
IMAP (encrypted)



83.227.79.64
995
POP3 (encrypted)



83.227.79.64
995
POP3 (encrypted)



83.227.79.64
1433
MS SQL



83.227.79.64
1433
MS SQL



83.227.79.64
2082
cPanel (http)



83.227.79.64
2082
cPanel (http)



83.227.79.64
2083
cPanel (https)



83.227.79.64
2083
cPanel (https)



83.227.79.64
2086
WHM (http)



83.227.79.64
2086
WHM (http)



83.227.79.64
2087
WHM (https)



83.227.79.64
2087
WHM (https)



83.227.79.64
2089
cPanel Licensing



83.227.79.64
2089
cPanel Licensing



83.227.79.64
2095
cPanel Webmail (http)



83.227.79.64
2095
cPanel Webmail (http)



83.227.79.64
2096
cPanel Webmail (https)



83.227.79.64
2096
cPanel Webmail (https)



83.227.79.64
2222
DirectAdmin (http)



83.227.79.64
2222
DirectAdmin (http)



83.227.79.64
2222
DirectAdmin (https)



83.227.79.64
2222
DirectAdmin (https)



83.227.79.64
3306
mySql



83.227.79.64
3306
mySql



83.227.79.64
5224
Plesk Licensing



83.227.79.64
5224
Plesk Licensing



83.227.79.64
5432
PostgreSQL



83.227.79.64
5432
PostgreSQL



83.227.79.64
8080
Ookla Speedtest (http)



83.227.79.64
8080
Ookla Speedtest (http)



83.227.79.64
8080
Ookla Speedtest (https)



83.227.79.64
8080
Ookla Speedtest (https)



83.227.79.64
8083
VestaCP http



83.227.79.64
8083
VestaCP http



83.227.79.64
8083
VestaCP https



83.227.79.64
8083
VestaCP https



83.227.79.64
8443
Plesk Administration (https)



83.227.79.64
8443
Plesk Administration (https)



83.227.79.64
8447
Plesk Installer + Updates



83.227.79.64
8447
Plesk Installer + Updates



83.227.79.64
8880
Plesk Administration (http)



83.227.79.64
8880
Plesk Administration (http)



83.227.79.64
10000
Webmin (http)



83.227.79.64
10000
Webmin (http)



83.227.79.64
10000
Webmin (https)



83.227.79.64
10000
Webmin (https)





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