techsikker.dk DNS records

🖥️ Nameservers2 records 48ms

Nameserver	IP addresses	PTR	ASN / ISP
coco.ns.cloudflare.com	108.162.192.104 172.64.32.104 173.245.58.104 2606:4700:50::adf5:3a68 2803:f800:50::6ca2:c068 2a06:98c1:50::ac40:2068	coco.ns.cloudflare.com coco.ns.cloudflare.com coco.ns.cloudflare.com coco.ns.cloudflare.com coco.ns.cloudflare.com coco.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
sid.ns.cloudflare.com	108.162.193.143 172.64.33.143 173.245.59.143 2606:4700:58::adf5:3b8f 2803:f800:50::6ca2:c18f 2a06:98c1:50::ac40:218f	sid.ns.cloudflare.com sid.ns.cloudflare.com sid.ns.cloudflare.com sid.ns.cloudflare.com sid.ns.cloudflare.com sid.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 45ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.45.5	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.207.11	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.gnb-mail.dk	2a02:c206:2099:6999::1 75.119.145.21	mail.gnb-mail.dk mail.gnb-mail.dk	AS51167 Contabo GmbH AS51167 Contabo GmbH

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	mail.gnb-mail.dk → 75.119.145.21
🔶 Autoconfig	mail.gnb-mail.dk → 75.119.145.21

🔷 AAAA Records (IPv6)2 records 47ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:cf0b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3032::6815:2d05	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 52ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.45.5,172.67.207.11 ech=AEX+DQBBBQAgACAWgYT7MIIYhZsgYsNV9qpcRNmrLnRNaTs1ummXhLw/HQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:cf0b,2606:4700:3032::6815:2d05

📝 TXT Records2 records 243ms

TXT Record
v=spf1 include:mx ~all
v=spf1 mx a:mail.gnb-mail.dk ip4:75.119.145.21 ip6:2a02:c206:2099:6999::1

✉️ SPF

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (techsikker.dk)
~all (soft fail)	v=spf1 include:mx ~all
no all — incomplete SPF	v=spf1 mx a:mail.gnb-mail.dk ip4:75.119.145.21 ip6:2a02:c206:2099:6999::1

📨 DMARC

Policy	Record (_dmarc.techsikker.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:1c7eb4c7b6f346f1992fb3c6b848a3c8@dmarc-reports.cloudflare.net

📬 MTA-STS253ms

Check	Result
Status	🔒 Enforce
TXT record (_mta-sts)	✓ Found
HTTPS policy	✓ Valid
Mode	enforce
Policy ID	20251024194204
max_age	3600s
Policy MX	mail.gnb-mail.dk

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records

✗ No CAA records — any CA may issue certificates

🔗 TLSA / DANE

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

🔐 DNSSEC125ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA0ms

Field	Value
Serial	2412890627
Primary NS (MNAME)	coco.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

48ms

A

45ms

MX

47ms

AAAA

47ms

TXT

243ms

CAA

48ms

HTTPS

52ms

TLSA

135ms

SOA

0ms

MTA-STS

253ms

DNSSEC

125ms

SRV

8080ms

Total

9046ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-22 16:18:14	9046ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-21 15:52:31	3752ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-18 11:36:16	1254ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-09 23:40:06	1256ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-23 22:29:40	9257ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-16 15:25:51	1025ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-26 19:33:54	965ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-25 03:42:30	1222ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-17 21:24:22	3745ms	2 NS 2 A 1 MX	🔒 Secure	View