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 14:21:42


Older results

No older results found


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 / ns000b.app6.ams2.afilias-nst.info


  a2.org.afilias-nst.info / 3.fra.pch


  b0.org.afilias-nst.org / ns000b.app9.ams2.afilias-nst.info


  b2.org.afilias-nst.org / 4.fra.pch


  c0.org.afilias-nst.info / app13.iad1.hosts.meta.redstone.afilias-nst.info-2


  d0.org.afilias-nst.org / ns000b.app28.ams2.afilias-nst.info


4. SOA-Entries


Domain:org
Primary:a0.org.afilias-nst.info
Mail:noc.afilias-nst.info
Serial:2013818065
Refresh:1800
Retry:900
Expire:604800
TTL:86400
num Entries:6


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)

No Screenshot listed, because no url-check with https + http status 200-299, 400-599 + not-ACME-check found.

6. Url-Checks

Domainname Http-StatusredirectSec.G
• http://duoduo.duckdns.org/
83.227.79.64
-2

1.154
V
ConnectFailure - Unable to connect to the remote server

• http://www.duoduo.duckdns.org/
83.227.79.64
-2

1.140
V
ConnectFailure - Unable to connect to the remote server

• https://duoduo.duckdns.org/
83.227.79.64
-2

1.140
V
ConnectFailure - Unable to connect to the remote server

• https://www.duoduo.duckdns.org/
83.227.79.64
-2

1.173
V
ConnectFailure - Unable to connect to the remote server

• http://duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
83.227.79.64
-2

1.150
V
ConnectFailure - Unable to connect to the remote server
Visible Content:

• http://www.duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
83.227.79.64
-2

1.143
V
ConnectFailure - Unable to connect to the remote server
Visible Content:

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
HSTS-Preload-Status: unknown. Domain never included in the Preload-list. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.
Vhttp://duoduo.duckdns.org/ 83.227.79.64
-2

connect failure - perhaps firewall
Vhttp://www.duoduo.duckdns.org/ 83.227.79.64
-2

connect failure - perhaps firewall
Vhttps://duoduo.duckdns.org/ 83.227.79.64
-2

connect failure - perhaps firewall
Vhttps://www.duoduo.duckdns.org/ 83.227.79.64
-2

connect failure - perhaps firewall
Vhttp://duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 83.227.79.64
-2

connect failure - perhaps firewall
Vhttp://www.duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 83.227.79.64
-2

connect failure - perhaps firewall
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: 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.
http://duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 83.227.79.64
-2

Fatal: Check of /.well-known/acme-challenge/random-filename is blocked, http connection error. Creating a Letsencrypt certificate via http-01 challenge can't work. You need a running webserver (http) and an open port 80. If it's a home server + ipv4, perhaps a correct port forwarding port 80 extern ⇒ working port intern is required. Port 80 / http can redirect to another domain port 80 or port 443, but not other ports. If it's a home server, perhaps your ISP blocks port 80. Then you may use the dns-01 challenge. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
http://www.duoduo.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 83.227.79.64
-2

Fatal: Check of /.well-known/acme-challenge/random-filename is blocked, http connection error. Creating a Letsencrypt certificate via http-01 challenge can't work. You need a running webserver (http) and an open port 80. If it's a home server + ipv4, perhaps a correct port forwarding port 80 extern ⇒ working port intern is required. Port 80 / http can redirect to another domain port 80 or port 443, but not other ports. If it's a home server, perhaps your ISP blocks port 80. Then you may use the dns-01 challenge. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
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: 182100 milliseconds, 182.100 seconds


8. Connections

No connection informations found. Perhaps only http - connections.


9. Certificates

No certificate informations found. Perhaps only http - connections.


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

No Html-Content entries found. Only checked if https + status 200/401/403/404


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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Last Result: https://check-your-website.server-daten.de/?q=duoduo.duckdns.org - 2020-02-13 14:24:44


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