tjek-ud.dk DNS records

🖥️ Nameservers2 records 84ms

Nameserver	IP addresses	PTR	ASN / ISP
linda.ns.cloudflare.com	108.162.192.250 172.64.32.250 173.245.58.250 2606:4700:50::adf5:3afa 2803:f800:50::6ca2:c0fa 2a06:98c1:50::ac40:20fa	linda.ns.cloudflare.com linda.ns.cloudflare.com linda.ns.cloudflare.com linda.ns.cloudflare.com linda.ns.cloudflare.com linda.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
mario.ns.cloudflare.com	108.162.193.203 172.64.33.203 173.245.59.203 2606:4700:58::adf5:3bcb 2803:f800:50::6ca2:c1cb 2a06:98c1:50::ac40:21cb	mario.ns.cloudflare.com mario.ns.cloudflare.com mario.ns.cloudflare.com mario.ns.cloudflare.com mario.ns.cloudflare.com mario.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 85ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.14.27	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.157.168	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 126ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:e1b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:9da8	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 118ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.14.27,172.67.157.168 ech=AEX+DQBB0wAgACBvcdMNkiAKssD1MMlAjwQ9suAXxEyj8jm+B6MzOy6bHAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:e1b,2606:4700:3033::ac43:9da8

📝 TXT Records

📝

No TXT records found

✉️ SPF

✗ No SPF record — mail spoofing not restricted

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.tjek-ud.dk	7SuoumPDNaEUooouWVL9iaE9zMvWi0Ba-FEUzpaDbEI
TXT	_acme-challenge.tjek-ud.dk	wGlp_tkKqP6Cp-de5wwwmJLajnYx_OeAgiwty8SPFZE

🔗 TLSA / DANE

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

🔐 DNSSEC246ms

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

🏷️ SOA0ms

Field	Value
Serial	2413023729
Primary NS (MNAME)	linda.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

84ms

A

85ms

MX

126ms

AAAA

126ms

TXT

415ms

CAA

87ms

HTTPS

118ms

TLSA

178ms

SOA

0ms

MTA-STS

157ms

DNSSEC

246ms

SRV

184ms

Total

2679ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-24 14:49:50	2679ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-21 05:08:17	3998ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-20 03:11:32	977ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-16 20:20:08	8761ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-29 16:39:59	759ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-22 16:22:13	928ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-21 18:48:28	632ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-20 18:15:23	1038ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-17 12:58:45	654ms	2 NS 2 A 0 MX	🔓 Insecure	View