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

Update: 2020-03-04 - now 90 days later. All affected Letsencrypt certificates should be renewed. Time to remove that Info.

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Private IP-Address found

Checked:
25.03.2020 08:41:44

Older results

Y - 25.03.2020 08:28:39

Y - 25.03.2020 08:05:38

Y - 25.03.2020 07:58:19

Y - 25.03.2020 07:53:37

Y - 25.03.2020 07:51:14

Y - 25.03.2020 07:45:03

1. IP-Addresses

Host	Type	IP-Address	is auth.	∑ Queries	∑ Timeout
ts4docker.nctu.me	A	192.168.169.240 No Hostname found	yes	1	0
	AAAA		yes
www.ts4docker.nctu.me	A	192.168.169.240 No Hostname found	yes	1	0
	AAAA		yes

2. DNSSEC

Zone (*)	DNSSEC - Informations

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


	• Status: Valid because published


	3 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


	Public Key with Algorithm 8, KeyTag 48903, Flags 256


	1 RRSIG RR to validate DNSKEY RR found


	• Algorithm: 8, 0 Labels, original TTL: 172800 sec, Signature-expiration: 11.04.2020, 00:00:00 +, Signature-Inception: 21.03.2020, 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: me
me	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: 07.04.2020, 05:00:00 +, Signature-Inception: 25.03.2020, 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 2569, Flags 257 (SEP = Secure Entry Point)


	Public Key with Algorithm 7, KeyTag 46829, Flags 256


	Public Key with Algorithm 7, KeyTag 53233, Flags 257 (SEP = Secure Entry Point)


	Public Key with Algorithm 7, KeyTag 55358, Flags 256


	3 RRSIG RR to validate DNSKEY RR found


	• Algorithm: 7, 1 Labels, original TTL: 900 sec, Signature-expiration: 07.04.2020, 15:18:20 +, Signature-Inception: 17.03.2020, 14:18:20 +, KeyTag 2569, Signer-Name: me


	• Algorithm: 7, 1 Labels, original TTL: 900 sec, Signature-expiration: 07.04.2020, 15:18:20 +, Signature-Inception: 17.03.2020, 14:18:20 +, KeyTag 46829, Signer-Name: me


	• Algorithm: 7, 1 Labels, original TTL: 900 sec, Signature-expiration: 07.04.2020, 15:18:20 +, Signature-Inception: 17.03.2020, 14:18:20 +, KeyTag 53233, Signer-Name: me


	• Status: Good - Algorithmus 7 and DNSKEY with KeyTag 2569 used to validate the DNSKEY RRSet


	• Status: Good - Algorithmus 7 and DNSKEY with KeyTag 46829 used to validate the DNSKEY RRSet


	• Status: Good - Algorithmus 7 and DNSKEY with KeyTag 53233 used to validate the DNSKEY RRSet


	• Status: Valid Chain of trust. Parent-DS with Algorithm 7, KeyTag 2569, DigestType 1 and Digest "CboetNIEAmIIgf2YSJlEF4ANsmo=" 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 2569, DigestType 2 and Digest "lOeYEG8DNQDmdWexl66RMsDpFnZNx0PFWp7KPHv1WeI=" validates local Key with the same values, Key ist Secure Entry Point (SEP) of the zone

Zone: nctu.me
nctu.me	0 DS RR in the parent zone found


	DS-Query in the parent zone has a valid NSEC3 RR as result with the hashed query name "f5orq72af3kcc66gtcs27736i8j2kqfb" between the hashed NSEC3-owner "f5me8en6pk96rl45l95l2dkqkpanlqpg" and the hashed NextOwner "f5tu4248ds8iougrtd2597v6g36i0a8v". So the parent zone confirmes the not-existence of a DS RR.Bitmap: NS, DS, RRSIG Validated: RRSIG Algorithm: 7, 2 Labels, original TTL: 8400 sec, Signature-expiration: 07.04.2020, 15:18:20 +, Signature-Inception: 17.03.2020, 14:18:20 +, KeyTag 46829, Signer-Name: me


	0 DNSKEY RR found




Zone: ts4docker.nctu.me
ts4docker.nctu.me	0 DS RR in the parent zone found


	0 DNSKEY RR found




Zone: www.ts4docker.nctu.me
www.ts4docker.nctu.me	0 DS RR in the parent zone found

3. Name Servers

Domain	Nameserver	NS-IP
www.ts4docker.nctu.me	• ns1.dnsimple.com / 67m30		•
ts4docker.nctu.me	• ns1.dnsimple.com / 67m17	162.159.24.4 Chicago/Illinois/United States (US) - Cloudflare, Inc.	•
	•	2400:cb00:2049:1::a29f:1804 Columbus/North Carolina/United States (US) - CLOUDFLARE	•
nctu.me	• ns1.dnsimple.com / 67m17		•
	• ns2.dnsimple.com / 67m9		•
	• ns3.dnsimple.com / 67m24		•
	• ns4.dnsimple.com / 67m29		•
me	• a0.nic.me / ns009b.app19.nrt1.afilias-nst.info		•
	• a2.nic.me / 2.fra.pch		•
	• b0.nic.me / ns009b.app14.ams2.afilias-nst.info		•
	• b2.nic.me / 4.fra.pch		•
	• c0.nic.me / ns009b.app13.ams2.afilias-nst.info		•

4. SOA-Entries

Domain:	me
Zone-Name:
Primary:	ns.nic.me
Mail:	noc.afilias-nst.info
Serial:	2010898902
Refresh:	3600
Retry:	3600
Expire:	3600000
TTL:	8400
num Entries:	5

Domain:	nctu.me
Zone-Name:
Primary:	ns1.dnsimple.com
Mail:	admin.dnsimple.com
Serial:	1438214593
Refresh:	86400
Retry:	7200
Expire:	604800
TTL:	300
num Entries:	4

Domain:	ts4docker.nctu.me
Zone-Name:
Primary:	ns1.dnsimple.com
Mail:	admin.dnsimple.com
Serial:	1438214607
Refresh:	86400
Retry:	7200
Expire:	604800
TTL:	300
num Entries:	2

Domain:	www.ts4docker.nctu.me
Zone-Name:
Primary:	ns1.dnsimple.com
Mail:	admin.dnsimple.com
Serial:	1438214619
Refresh:	86400
Retry:	7200
Expire:	604800
TTL:	300
num Entries:	1

5. Screenshots

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

6. Url-Checks

Domainname	Http-Status	redirect	Sec.	G
•

7. Comments

	1. General Results, most used to calculate the result
A	name "ts4docker.nctu.me" is domain, public suffix is "nctu.me", top-level-domain-type is "country-code", Country is Montenegro, tld-manager is "Government of Montenegro"
A	good: No asked Authoritative Name Server had a timeout
	HSTS-Preload-Status: unknown. Domain never included in the Preload-list. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.
Y	ts4docker.nctu.me	192.168.169.240	Warning: Private ip address found. No connection possible. There are two types of ip addresses: Worldwide unique, global addresses and private addresses. If you want that other users connect your domain, your domain must have minimal one A- (ipv4) or AAAA- (ipv6) entry with a global ip address. Check https://en.wikipedia.org/wiki/Private_network to understand the details: 192.168.0.0 to 192.168.255.255: Class C - 256 private net, every with 256 addresses
Y	www.ts4docker.nctu.me	192.168.169.240	Warning: Private ip address found. No connection possible. There are two types of ip addresses: Worldwide unique, global addresses and private addresses. If you want that other users connect your domain, your domain must have minimal one A- (ipv4) or AAAA- (ipv6) entry with a global ip address. Check https://en.wikipedia.org/wiki/Private_network to understand the details: 192.168.0.0 to 192.168.255.255: Class C - 256 private net, every with 256 addresses
	2. DNS- and NameServer - Checks
A	Good: Nameserver supports TCP connections: 2 good Nameserver
A	Good: Nameserver supports Echo Capitalization: 2 good Nameserver
A	Good: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 2 good Nameserver
A	Good: Nameserver has passed 10 EDNS-Checks (OP100, FLAGS, V1, V1OP100, V1FLAGS, DNSSEC, V1DNSSEC, NSID, COOKIE, CLIENTSUBNET): 2 good Nameserver
A	Good: All SOA have the same Serial Number
	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.
	3. Content- and Performance-critical Checks
A	Info: No img element found, no alt attribute checked
A	Good: 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
A	Duration: 24877 milliseconds, 24.877 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)

No CertSpotter - CT-Log entries found

2. Source crt.sh - old and new certificates, sometimes very slow - only certificates with "not after" > 2019 are listed

No CRT - CT-Log entries found

11. Html-Content - Entries

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

12. Nameserver - IP-Adresses (alpha)

Required Root-climbing DNS-Queries to find ip addresses of all Name Servers:

No NameServer - IP address informations found. The feature is new (2020-05-07), so recheck this domain.

13. CAA - Entries

Domainname	Value	∑ Queries
www.ts4docker.nctu.me	no CAA entry found	1
ts4docker.nctu.me	no CAA entry found	1
nctu.me	no CAA entry found	1
me	no CAA entry found	1

14. TXT - Entries

Domainname	Status	∑ Queries
ts4docker.nctu.me	ok	1
www.ts4docker.nctu.me	ok	1
_acme-challenge.ts4docker.nctu.me	Name Error - The domain name does not exist	1
_acme-challenge.www.ts4docker.nctu.me	Name Error - The domain name does not exist	1
_acme-challenge.ts4docker.nctu.me.ts4docker.nctu.me	Name Error - The domain name does not exist	1
_acme-challenge.www.ts4docker.nctu.me.ts4docker.nctu.me	Name Error - The domain name does not exist	1
_acme-challenge.www.ts4docker.nctu.me.www.ts4docker.nctu.me	Name Error - The domain name does not exist	1

15. Portchecks

No Port checks

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Last Result: https://check-your-website.server-daten.de/?q=ts4docker.nctu.me - 2020-03-25 08:41:44

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