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




X

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

Checked:
07.11.2019 16:46:18


Older results


1. IP-Addresses

HostTIP-Addressis auth.∑ Queries∑ Timeout
burhome.duckdns.org
A
176.105.38.121
Kyiv/Kyiv City/Ukraine (UA) - Bilink
No Hostname found
yes
1
0

AAAA

yes


www.burhome.duckdns.org
A
176.105.38.121
Kyiv/Kyiv City/Ukraine (UA) - Bilink
No Hostname found
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 22545, Flags 256



1 RRSIG RR to validate DNSKEY RR found



Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 21.11.2019, 00:00:00, Signature-Inception: 31.10.2019, 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: 20.11.2019, 05:00:00, Signature-Inception: 07.11.2019, 04:00:00, KeyTag 22545, Signer-Name: (root)



Status: Good - Algorithmus 8 and DNSKEY with KeyTag 22545 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 11324, Flags 256



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



Public Key with Algorithm 7, KeyTag 36752, Flags 256



3 RRSIG RR to validate DNSKEY RR found



Algorithm: 7, 1 Labels, original TTL: 900 sec, Signature-expiration: 22.11.2019, 15:23:40, Signature-Inception: 01.11.2019, 14:23:40, KeyTag 9795, Signer-Name: org



Algorithm: 7, 1 Labels, original TTL: 900 sec, Signature-expiration: 22.11.2019, 15:23:40, Signature-Inception: 01.11.2019, 14:23:40, KeyTag 11324, Signer-Name: org



Algorithm: 7, 1 Labels, original TTL: 900 sec, Signature-expiration: 22.11.2019, 15:23:40, Signature-Inception: 01.11.2019, 14:23:40, KeyTag 17883, 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 11324 used to validate the DNSKEY RRSet



Status: Good - Algorithmus 7 and DNSKEY with KeyTag 17883 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.



0 DNSKEY RR found





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



0 DNSKEY RR found





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


3. Name Servers

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


U  ns2.duckdns.org


U  ns3.duckdns.org

burhome.duckdns.org
U  ns1.duckdns.org
54.187.92.222
Portland/Oregon/United States (US) - Amazon Technologies Inc.


U  ns2.duckdns.org
54.191.117.119
Portland/Oregon/United States (US) - Amazon Technologies 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.app2.mia2.afilias-nst.info


  a2.org.afilias-nst.info / 2.fra.pch


  b0.org.afilias-nst.org / ns000b.app13.ams2.afilias-nst.info


  b2.org.afilias-nst.org / 4.fra.pch


  c0.org.afilias-nst.info / ns000a.app1.ams2.afilias-nst.info


  d0.org.afilias-nst.org / app13.iad1.hosts.meta.redstone.afilias-nst.info-2


4. SOA-Entries


Domain:org
Primary:a0.org.afilias-nst.info
Mail:noc.afilias-nst.info
Serial:2013694945
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:burhome.duckdns.org
Primary:ns1.duckdns.org
Mail:hostmaster.duckdns.org
Serial:2019170803
Refresh:6000
Retry:120
Expire:2419200
TTL:600
num Entries:1


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


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


5. Url-Checks


:

:
Domainname Http-StatusredirectSec.G
• http://burhome.duckdns.org/
176.105.38.121
-2

1.170
V
ConnectFailure - Unable to connect to the remote server

• http://www.burhome.duckdns.org/
176.105.38.121
-2

1.170
V
ConnectFailure - Unable to connect to the remote server

• https://burhome.duckdns.org/
176.105.38.121 No GZip used - 1577 / 3086 - 51.10 % possible
Inline-JavaScript (∑/total): 2/1006 Inline-CSS (∑/total): 2/241
200

Html is minified: 176.54 %
3.453
A
small visible content (num chars: 17)
<!DOCTYPE html><html lang="en"><head><link rel="preload" href="/frontend_latest/core.68a04351.js" as="script" crossorigin="use-credentials"><link rel="preload" href="/static/fonts/roboto/Roboto-Regular.woff2" as="font" crossorigin><link rel="preload" href="/static/fonts/roboto/Roboto-Medium.woff2" as="font" crossorigin><meta charset="utf-8"><link rel="manifest" href="/manifest.json" crossorigin="use-credentials"><link rel="icon" href="/static/icons/favicon.ico"><meta name="viewport" content="width=device-width,user-scalable=no"><style>body{font-family:Roboto,sans-serif;-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased;font-weight:400;margin:0;padding:0;height:100vh}</style><title>Home Assistant</title><link rel="apple-touch-icon" sizes="180x180" href="/static/icons/favicon-apple-180x180.png"><link rel="mask-icon" href="/static/icons/mask-icon.svg" color="#03a9f4"><meta name="apple-itunes-app" content="app-id=1099568401"><meta name="apple-mobile-web-app-capable" content="yes"><meta name="msapplication-square70x70logo" content="/static/icons/tile-win-70x70.png"><meta name="msapplication-square150x150logo" content="/static/icons/tile-win-150x150.png"><meta name="msapplication-wide310x150logo" content="/static/icons/tile-win-310x150.png"><meta name="msapplication-square310x310logo" content="/static/icons/tile-win-310x310.png"><meta name="msapplication-TileColor" content="#03a9f4ff"><meta name="mobile-web-app-capable" content="yes"><meta name="referrer" content="same-origin"><meta name="theme-color" content="#03A9F4"><style>#ha-init-skeleton::before{display:block;content:"";height:112px;background-color:#03A9F4}</style></head><body><div id="ha-init-skeleton"></div><home-assistant></home-assistant><script>function _ls(e){var t=document.documentElement,s=t.insertBefore(document.createElement("script"),t.lastChild);s.defer=!0,s.src=e}window.Polymer={lazyRegister:!0,useNativeCSSProperties:!0,dom:"shadow",suppressTemplateNotifications:!0,suppressBindingNotifications:!0},"customElements"in window&&"content"in document.createElement("template")||document.write("<script src='/static/polyfills/webcomponents-bundle.js'><\/script>");var isS101=/\s+Version\/10\.1(?:\.\d+)?\s+Safari\//.test(navigator.userAgent)</script><script type="module" crossorigin="use-credentials">import "/frontend_latest/core.68a04351.js"; import "/frontend_latest/app.34e7b19f.js"; import "/frontend_latest/hass-icons.a09da51c.js"; window.customPanelJS = "/frontend_latest/custom-panel.0ed3fe47.js";</script><script nomodule>(function() { // // Safari 10.1 supports type=module but ignores nomodule, so we add this check. if (!isS101) { window.customPanelJS = "/frontend_es5/custom-panel.a6e00a41.js"; _ls("/static/polyfills/custom-elements-es5-adapter.js"); _ls("/frontend_es5/compatibility.8b90988f.js"); _ls("/frontend_es5/core.c3f7dd3b.js"); _ls("/frontend_es5/app.fc543e30.js"); _ls("/frontend_es5/hass-icons.129521ed.js"); } })();</script></body></html>
Server: nginx/1.16.1
Date: Thu, 07 Nov 2019 15:48:46 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 3086
Connection: close
Strict-Transport-Security: max-age=31536000; includeSubDomains

• https://www.burhome.duckdns.org/
176.105.38.121
-8

0.376
W
ConnectionClosed - The underlying connection was closed: The connection was closed unexpectedly.

• http://burhome.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
176.105.38.121
-2

1.170
V
ConnectFailure - Unable to connect to the remote server
Visible Content:

• http://www.burhome.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
176.105.38.121
-2

1.140
V
ConnectFailure - Unable to connect to the remote server
Visible Content:

6. Comments (GZip / Html minfied / Cache-Control is beta)

Aname "burhome.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
Agood - only one version with Http-Status 200
Agood: one preferred version: non-www is preferred
Agood: every https has a Strict Transport Security Header
Agood: HSTS max-age is long enough, 31536000 seconds = 365 days
Agood: HSTS has includeSubdomains - directive
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: All urls with http status 200/404 have a complete Content-Type header (MediaType / MediaSubType + correct charset)
Vhttp://burhome.duckdns.org/ 176.105.38.121
-2

connect failure - perhaps firewall
Vhttp://www.burhome.duckdns.org/ 176.105.38.121
-2

connect failure - perhaps firewall
Vhttp://burhome.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 176.105.38.121
-2

connect failure - perhaps firewall
Vhttp://www.burhome.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 176.105.38.121
-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: fatal timeout.
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://burhome.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 176.105.38.121
-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.burhome.duckdns.org/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 176.105.38.121
-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.
https://burhome.duckdns.org/ 176.105.38.121
200

Warning: https result with status 200 without GZip found. Add GZip support so the html content is compressed.
https://burhome.duckdns.org/ 176.105.38.121
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://burhome.duckdns.org/ 176.105.38.121
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: 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: 163573 milliseconds, 163.573 seconds


7. Connections (http/2- and additional Tls.1.0/1.1/1.2 checks are BETA)

DomainIPPortCert.ProtocolKeyExchangeStrengthCipherStrengthHashAlgorithmOCSP stapling
Domain/KeyExchangeIP/StrengthPort/CipherCert./StrengthProtocol/HashAlgorithmOCSP stapling
burhome.duckdns.org
176.105.38.121
443
ok
Tls12
ECDH Ephermal
255
Aes256
256
Sha384
error checking OCSP stapling
ok
burhome.duckdns.org
176.105.38.121
443
ok
Tls12

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

2CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US


8. Certificates

1.
1.
CN=burhome.duckdns.org
22.10.2019
20.01.2020
expires in 64 days
burhome.duckdns.org - 1 entry
1.
1.
CN=burhome.duckdns.org
22.10.2019

20.01.2020
expires in 64 days
burhome.duckdns.org - 1 entry

KeyalgorithmRSA encryption (4096 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:04F60A954C14D2D8200567BB95DC7C1D1A17
Thumbprint:FC1ADFDBD439B5E977191B3CFC8E8EDE577ABB78
SHA256 / Certificate:k2P1jsHzDmeiAsKqXscOoOeCSgh7ffuKAWv/FB0ypFo=
SHA256 hex / Cert (DANE * 0 1):e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA256 hex / PublicKey (DANE * 1 1):97c11105fac14c51e82c52fc13fd320382201935cef16bb05717b76ff57ee5a6
OCSP - Url:http://ocsp.int-x3.letsencrypt.org
OCSP - must staple:no
Certificate Transparency:yes


2.
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
17.03.2016
17.03.2021
expires in 486 days


2.
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
17.03.2016

17.03.2021
expires in 486 days


KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA256 With RSA-Encryption
Serial Number:0A0141420000015385736A0B85ECA708
Thumbprint:E6A3B45B062D509B3382282D196EFE97D5956CCB
SHA256 / Certificate:JYR9Zo608E/dQLErawdAxWfafQJDCOtsLJb+QdneIY0=
SHA256 hex / Cert (DANE * 0 1):25847d668eb4f04fdd40b12b6b0740c567da7d024308eb6c2c96fe41d9de218d
SHA256 hex / PublicKey (DANE * 1 1):60b87575447dcba2a36b7d11ac09fb24a9db406fee12d2cc90180517616e8a18
OCSP - Url:http://isrg.trustid.ocsp.identrust.com
OCSP - must staple:no
Certificate Transparency:no


3.
CN=DST Root CA X3, O=Digital Signature Trust Co.
30.09.2000
30.09.2021
expires in 683 days


3.
CN=DST Root CA X3, O=Digital Signature Trust Co.
30.09.2000

30.09.2021
expires in 683 days


KeyalgorithmRSA encryption (2048 bit)
Signatur:SHA-1 with RSA Encryption
Serial Number:44AFB080D6A327BA893039862EF8406B
Thumbprint:DAC9024F54D8F6DF94935FB1732638CA6AD77C13
SHA256 / Certificate:BocmAzGnJAPZCfEF5pvPDTLhvSST/8bZIG0RvNZ3Bzk=
SHA256 hex / Cert (DANE * 0 1):0687260331a72403d909f105e69bcf0d32e1bd2493ffc6d9206d11bcd6770739
SHA256 hex / PublicKey (DANE * 1 1):563b3caf8cfef34c2335caf560a7a95906e8488462eb75ac59784830df9e5b2b
OCSP - Url:
OCSP - must staple:no
Certificate Transparency:no



9. Last Certificates - Certificate Transparency Log Check

1. Source CertSpotter - active certificates

Issuerlast 7 daysactivenum Certs
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
0
1
1

CertSpotter-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
1199686011
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-10-22 15:20:34
2020-01-20 15:20:34
burhome.duckdns.org - 1 entries



2. Source crt.sh - old and new certificates, sometimes very slow.

Issuerlast 7 daysactivenum Certs
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
0 /0 new
1
1

CRT-IdIssuernot beforenot afterDomain namesLE-Duplicatenext LE
2026264941
leaf cert
CN=Let's Encrypt Authority X3, O=Let's Encrypt, C=US
2019-10-22 13:20:34
2020-01-20 14:20:34
burhome.duckdns.org
1 entries



10. Html-Content - Entries

Summary

Subresource Integrity (SRI)
DomainnameHtmlElementrel/property∑ size∑ problems∑ int.∑ ext.∑ Origin poss.∑ SRI ParseErrors∑ SRI valid∑ SRI missing
https://burhome.duckdns.org/
176.105.38.121
link
other
7
23,906 Bytes
0
3
0





meta
apple
2

0







meta
other
10
10,922 Bytes
0
4
0




Details (GZip part is BETA, may be wrong / incomplete)

DomainnameHtml-Elementname/equiv/ property/relhref/src/contentHttpStatusmsgStatus
https://burhome.duckdns.org/
176.105.38.121
link
apple-touch-icon
/static/icons/favicon-apple-180x180.png
200
image/png

1
ok

Cache-Control: public, max-age=2678400 with long duration found.
No GZip - 4359 Bytes






link
icon
/static/icons/favicon.ico
200
image/vnd.microsoft.icon

1
ok

Cache-Control: public, max-age=2678400 with long duration found.
No GZip - 17957 Bytes






link
manifest
/manifest.json


1
ok








link
mask-icon
/static/icons/mask-icon.svg
200
image/svg+xml

1
ok

Cache-Control: public, max-age=2678400 with long duration found.
No GZip - 1590 Bytes






link
preload
/frontend_latest/core.68a04351.js


1
ok








link
preload
/static/fonts/roboto/Roboto-Medium.woff2


1
ok








link
preload
/static/fonts/roboto/Roboto-Regular.woff2


1
ok








meta

utf-8


1
ok








meta
apple-itunes-app
app-id=1099568401


1
ok








meta
apple-mobile-web-app-capable
yes


1
ok








meta
mobile-web-app-capable
yes


1
ok








meta
msapplication-square150x150logo
/static/icons/tile-win-150x150.png
200
image/png

1
ok

Cache-Control: public, max-age=2678400 with long duration found.
No GZip - 2139 Bytes






meta
msapplication-square310x310logo
/static/icons/tile-win-310x310.png
200
image/png

1
ok

Cache-Control: public, max-age=2678400 with long duration found.
No GZip - 5312 Bytes






meta
msapplication-square70x70logo
/static/icons/tile-win-70x70.png
200
image/png

1
ok

Cache-Control: public, max-age=2678400 with long duration found.
No GZip - 824 Bytes






meta
msapplication-TileColor
#03a9f4ff


1
ok








meta
msapplication-wide310x150logo
/static/icons/tile-win-310x150.png
200
image/png

1
ok

Cache-Control: public, max-age=2678400 with long duration found.
No GZip - 2647 Bytes






meta
referrer
same-origin


1
ok








meta
theme-color
#03A9F4


1
ok








meta
viewport
width=device-width,user-scalable=no


1
ok








11. CAA - Entries

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



1
0
burhome.duckdns.org



1
0
duckdns.org
0

no CAA entry found
1
0
org
0

no CAA entry found
1
0


12. TXT - Entries

DomainnameTXT EntryStatus∑ Queries∑ Timeout
burhome.duckdns.org

ok
1
0
www.burhome.duckdns.org

ok
1
0
_acme-challenge.burhome.duckdns.org

missing entry or wrong length
1
0
_acme-challenge.www.burhome.duckdns.org

missing entry or wrong length
1
0
_acme-challenge.burhome.duckdns.org.burhome.duckdns.org

perhaps wrong
1
0
_acme-challenge.www.burhome.duckdns.org.burhome.duckdns.org

perhaps wrong
1
0
_acme-challenge.www.burhome.duckdns.org.www.burhome.duckdns.org

perhaps wrong
1
0


13. Portchecks (BETA)

Domain or IPPortDescriptionResultAnswer
burhome.duckdns.org
21
FTP



burhome.duckdns.org
21
FTP



burhome.duckdns.org
22
SSH



burhome.duckdns.org
22
SSH



burhome.duckdns.org
25
SMTP



burhome.duckdns.org
25
SMTP



burhome.duckdns.org
53
DNS



burhome.duckdns.org
53
DNS



burhome.duckdns.org
110
POP3



burhome.duckdns.org
110
POP3



burhome.duckdns.org
143
IMAP



burhome.duckdns.org
143
IMAP



burhome.duckdns.org
465
SMTP (encrypted)



burhome.duckdns.org
465
SMTP (encrypted)



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



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



burhome.duckdns.org
993
IMAP (encrypted)



burhome.duckdns.org
993
IMAP (encrypted)



burhome.duckdns.org
995
POP3 (encrypted)



burhome.duckdns.org
995
POP3 (encrypted)



burhome.duckdns.org
1433
MS SQL



burhome.duckdns.org
1433
MS SQL



burhome.duckdns.org
2082
cPanel (http)



burhome.duckdns.org
2082
cPanel (http)



burhome.duckdns.org
2083
cPanel (https)



burhome.duckdns.org
2083
cPanel (https)



burhome.duckdns.org
2086
WHM (http)



burhome.duckdns.org
2086
WHM (http)



burhome.duckdns.org
2087
WHM (https)



burhome.duckdns.org
2087
WHM (https)



burhome.duckdns.org
2089
cPanel Licensing



burhome.duckdns.org
2089
cPanel Licensing



burhome.duckdns.org
2095
cPanel Webmail (http)



burhome.duckdns.org
2095
cPanel Webmail (http)



burhome.duckdns.org
2096
cPanel Webmail (https)



burhome.duckdns.org
2096
cPanel Webmail (https)



burhome.duckdns.org
2222
DirectAdmin (http)



burhome.duckdns.org
2222
DirectAdmin (http)



burhome.duckdns.org
2222
DirectAdmin (https)



burhome.duckdns.org
2222
DirectAdmin (https)



burhome.duckdns.org
3306
mySql



burhome.duckdns.org
3306
mySql



burhome.duckdns.org
5224
Plesk Licensing



burhome.duckdns.org
5224
Plesk Licensing



burhome.duckdns.org
5432
PostgreSQL



burhome.duckdns.org
5432
PostgreSQL



burhome.duckdns.org
8080
Ookla Speedtest (http)



burhome.duckdns.org
8080
Ookla Speedtest (http)



burhome.duckdns.org
8080
Ookla Speedtest (https)



burhome.duckdns.org
8080
Ookla Speedtest (https)



burhome.duckdns.org
8083
VestaCP http



burhome.duckdns.org
8083
VestaCP http



burhome.duckdns.org
8083
VestaCP https



burhome.duckdns.org
8083
VestaCP https



burhome.duckdns.org
8443
Plesk Administration (https)



burhome.duckdns.org
8443
Plesk Administration (https)



burhome.duckdns.org
8447
Plesk Installer + Updates



burhome.duckdns.org
8447
Plesk Installer + Updates



burhome.duckdns.org
8880
Plesk Administration (http)



burhome.duckdns.org
8880
Plesk Administration (http)



burhome.duckdns.org
10000
Webmin (http)



burhome.duckdns.org
10000
Webmin (http)



burhome.duckdns.org
10000
Webmin (https)



burhome.duckdns.org
10000
Webmin (https)



www.burhome.duckdns.org
21
FTP



www.burhome.duckdns.org
21
FTP



www.burhome.duckdns.org
22
SSH



www.burhome.duckdns.org
22
SSH



www.burhome.duckdns.org
25
SMTP



www.burhome.duckdns.org
25
SMTP



www.burhome.duckdns.org
53
DNS



www.burhome.duckdns.org
53
DNS



www.burhome.duckdns.org
110
POP3



www.burhome.duckdns.org
110
POP3



www.burhome.duckdns.org
143
IMAP



www.burhome.duckdns.org
143
IMAP



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



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



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



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



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



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



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



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



www.burhome.duckdns.org
1433
MS SQL



www.burhome.duckdns.org
1433
MS SQL



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



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



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



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



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



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



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



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



www.burhome.duckdns.org
2089
cPanel Licensing



www.burhome.duckdns.org
2089
cPanel Licensing



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



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



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



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



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



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



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



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



www.burhome.duckdns.org
3306
mySql



www.burhome.duckdns.org
3306
mySql



www.burhome.duckdns.org
5224
Plesk Licensing



www.burhome.duckdns.org
5224
Plesk Licensing



www.burhome.duckdns.org
5432
PostgreSQL



www.burhome.duckdns.org
5432
PostgreSQL



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



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



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



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



www.burhome.duckdns.org
8083
VestaCP http



www.burhome.duckdns.org
8083
VestaCP http



www.burhome.duckdns.org
8083
VestaCP https



www.burhome.duckdns.org
8083
VestaCP https



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



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



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



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



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



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



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



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



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



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



176.105.38.121
21
FTP



176.105.38.121
21
FTP



176.105.38.121
22
SSH



176.105.38.121
22
SSH



176.105.38.121
25
SMTP



176.105.38.121
25
SMTP



176.105.38.121
53
DNS



176.105.38.121
53
DNS



176.105.38.121
110
POP3



176.105.38.121
110
POP3



176.105.38.121
143
IMAP



176.105.38.121
143
IMAP



176.105.38.121
465
SMTP (encrypted)



176.105.38.121
465
SMTP (encrypted)



176.105.38.121
587
SMTP (encrypted, submission)



176.105.38.121
587
SMTP (encrypted, submission)



176.105.38.121
993
IMAP (encrypted)



176.105.38.121
993
IMAP (encrypted)



176.105.38.121
995
POP3 (encrypted)



176.105.38.121
995
POP3 (encrypted)



176.105.38.121
1433
MS SQL



176.105.38.121
1433
MS SQL



176.105.38.121
2082
cPanel (http)



176.105.38.121
2082
cPanel (http)



176.105.38.121
2083
cPanel (https)



176.105.38.121
2083
cPanel (https)



176.105.38.121
2086
WHM (http)



176.105.38.121
2086
WHM (http)



176.105.38.121
2087
WHM (https)



176.105.38.121
2087
WHM (https)



176.105.38.121
2089
cPanel Licensing



176.105.38.121
2089
cPanel Licensing



176.105.38.121
2095
cPanel Webmail (http)



176.105.38.121
2095
cPanel Webmail (http)



176.105.38.121
2096
cPanel Webmail (https)



176.105.38.121
2096
cPanel Webmail (https)



176.105.38.121
2222
DirectAdmin (http)



176.105.38.121
2222
DirectAdmin (http)



176.105.38.121
2222
DirectAdmin (https)



176.105.38.121
2222
DirectAdmin (https)



176.105.38.121
3306
mySql



176.105.38.121
3306
mySql



176.105.38.121
5224
Plesk Licensing



176.105.38.121
5224
Plesk Licensing



176.105.38.121
5432
PostgreSQL



176.105.38.121
5432
PostgreSQL



176.105.38.121
8080
Ookla Speedtest (http)



176.105.38.121
8080
Ookla Speedtest (http)



176.105.38.121
8080
Ookla Speedtest (https)



176.105.38.121
8080
Ookla Speedtest (https)



176.105.38.121
8083
VestaCP http



176.105.38.121
8083
VestaCP http



176.105.38.121
8083
VestaCP https



176.105.38.121
8083
VestaCP https



176.105.38.121
8443
Plesk Administration (https)



176.105.38.121
8443
Plesk Administration (https)



176.105.38.121
8447
Plesk Installer + Updates



176.105.38.121
8447
Plesk Installer + Updates



176.105.38.121
8880
Plesk Administration (http)



176.105.38.121
8880
Plesk Administration (http)



176.105.38.121
10000
Webmin (http)



176.105.38.121
10000
Webmin (http)



176.105.38.121
10000
Webmin (https)



176.105.38.121
10000
Webmin (https)





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