tjekr.dk

📜 Historical scan 2026-09-05 15:25:11 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tjekr.dk is a .dk domain served by 2 nameservers (arvind.ns.cloudflare.com, princess.ns.cloudflare.com). It was registered on 28 February 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.26.0.11 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by smtp.google.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 54ms

Nameserver	IP addresses	PTR	ASN / ISP
arvind.ns.cloudflare.com	108.162.195.227 162.159.44.227 172.64.35.227 2606:4700:58::a29f:2ce3 2803:f800:50::6ca2:c3e3 2a06:98c1:50::ac40:23e3	arvind.ns.cloudflare.com arvind.ns.cloudflare.com arvind.ns.cloudflare.com arvind.ns.cloudflare.com arvind.ns.cloudflare.com arvind.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
princess.ns.cloudflare.com	108.162.194.17 162.159.38.17 172.64.34.17 2606:4700:50::a29f:2611 2803:f800:50::6ca2:c211 2a06:98c1:50::ac40:2211	princess.ns.cloudflare.com princess.ns.cloudflare.com princess.ns.cloudflare.com princess.ns.cloudflare.com princess.ns.cloudflare.com princess.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

3 records 2034ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.26.0.11	298s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
104.26.1.11	298s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
172.67.72.29	298s	—	AS13335	Cloudflare, Inc.	172.67.64.0/18	—	—

📧 MX Records#

1 records 50ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	60s	smtp.google.com	142.250.147.26 142.250.147.27 142.251.9.26 142.251.9.27 2a00:1450:4025:c01::1a 2a00:1450:4025:c01::1b 2a00:1450:4025:c03::1a 2a00:1450:4025:c03::1b	rd-in-f26.1e100.net rd-in-f27.1e100.net rc-in-f26.1e100.net rc-in-f27.1e100.net rd-in-f26.1e100.net rd-in-f27.1e100.net rc-in-f26.1e100.net rc-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

3 records 47ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:20::681a:10b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::681a:b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::ac43:481d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—

🔐 HTTPS Records#

1 records 61ms

Priority	Target	SvcParams
1 service	.	alpn="h2" ipv4hint=104.26.0.11,104.26.1.11,172.67.72.29 ipv6hint=2606:4700:20::681a:b,2606:4700:20::681a:10b,2606:4700:20::ac43:481d

📝 TXT Records#

1 records 181ms

TXT Record
google-site-verification=TBBvJRhEzAgzZkKdX9jC7VoSsNJCiBuuXk7mdFo8L5o

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

Policy	Record (_dmarc.tjekr.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 09:44:28

www	104.26.0.11 104.26.1.11 172.67.72.29 2606:4700:20::681a:10b 2606:4700:20::681a:b 2606:4700:20::ac43:481d (AS13335) (address records, no CNAME)
www vs bare domain	Same network tjekr.dk: 104.26.0.11 104.26.1.11 172.67.72.29 2606:4700:20::681a:10b (AS13335) www.tjekr.dk: 104.26.0.11 104.26.1.11 172.67.72.29 2606:4700:20::681a:10b (AS13335)
Wildcard	No

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.tjekr.dk	verify-ygzrp4ld.ssl.on-forge.com

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

85ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2411520967
Primary NS (MNAME)	arvind.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-17 02:04:21

Field	Value
Registrar	DANDOMAIN A/S
Registered	2026-02-28
Expires	2027-02-27 (125d)

🔗 Same registrant#

9 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
budgetr.dk	DANDOMAIN A/S
forbrugr.dk	DANDOMAIN A/S
kalendr.dk	DANDOMAIN A/S
kigr.dk	DANDOMAIN A/S
kronr.dk	DANDOMAIN A/S
m-flor.dk	Simply.com A/S
magnusflor.dk	Simply.com A/S
udviklr.dk	DANDOMAIN A/S
ventr.dk	DANDOMAIN A/S

📋 WHOIS#

⏱️ Lookup Timing#

54ms

2034ms

50ms

AAAA

47ms

TXT

181ms

CAA

48ms

HTTPS

61ms

TLSA

142ms

SOA

0ms

MTA-STS

76ms

DNSSEC

85ms

SRV

73ms

Total

3064ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 09:44:28	1731ms	2 NS 3 A 1 MX	🔓 Insecure
2026-09-25 06:15:31	732ms	2 NS 3 A 1 MX	🔓 Insecure
2026-09-22 17:06:16	1616ms	2 NS 3 A 1 MX	🔓 Insecure
2026-09-10 01:25:37	942ms	2 NS 3 A 1 MX	🔓 Insecure
2026-09-05 15:25:11 shown	3064ms	2 NS 3 A 1 MX	🔓 Insecure
2026-08-07 12:39:01	10480ms	2 NS 3 A 1 MX	🔓 Insecure
2026-07-24 06:55:56	9382ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-09 00:38:24	41344ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-26 21:55:29	6109ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 23:35:02	1126ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 06:53:55	1341ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 13:00:36	940ms	2 NS 2 A 1 MX	🔓 Insecure