tjekr.dk

📜 Historical scan 2026-06-26 21:55:29 · ← 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 104.21.36.164 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 244ms

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#

2 records 224ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.36.164	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.196.252	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 280ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	60s	smtp.google.com	173.194.73.26 173.194.73.27 2a00:1450:4010:c07::1a 2a00:1450:4010:c07::1a 2a00:1450:4010:c07::1b 2a00:1450:4010:c07::1b 2a00:1450:4010:c08::1a 2a00:1450:4010:c08::1a 2a00:1450:4010:c0d::1b 2a00:1450:4010:c0d::1b 64.233.164.26 64.233.164.27 64.233.165.27	lq-in-f26.1e100.net lq-in-f27.1e100.net lf-in-x1a.1e100.net lf-in-f26.1e100.net lf-in-f27.1e100.net lf-in-x1b.1e100.net lg-in-x1a.1e100.net lg-in-f26.1e100.net lq-in-f27.1e100.net lq-in-x1b.1e100.net lf-in-f26.1e100.net lf-in-f27.1e100.net lg-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 AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records 192ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:24a4	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:c4fc	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 335ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.36.164,172.67.196.252 ech=AEX+DQBBFAAgACDWoAgAOkKZTQouulORkrky2Tii4iKo/FCi9RNuOe/BQAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:24a4,2606:4700:3035::ac43:c4fc

📝 TXT Records#

1 records 660ms

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#

508ms

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

🏷️ SOA#

334ms

Field	Value
Serial	2407207330
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 (128d)

🔗 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#

244ms

224ms

280ms

AAAA

192ms

TXT

660ms

CAA

129ms

HTTPS

335ms

TLSA

362ms

SOA

334ms

MTA-STS

347ms

DNSSEC

508ms

SRV

383ms

Total

6109ms

🕐 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	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 shown	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