gt3.dk DNS records

🖥️ Nameservers2 records 26ms

Nameserver	IP addresses	PTR	ASN / ISP
lochlan.ns.cloudflare.com	108.162.195.234 162.159.44.234 172.64.35.234 2606:4700:58::a29f:2cea 2803:f800:50::6ca2:c3ea 2a06:98c1:50::ac40:23ea	lochlan.ns.cloudflare.com lochlan.ns.cloudflare.com lochlan.ns.cloudflare.com lochlan.ns.cloudflare.com lochlan.ns.cloudflare.com lochlan.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
raquel.ns.cloudflare.com	108.162.194.210 162.159.38.210 172.64.34.210 2606:4700:50::a29f:26d2 2803:f800:50::6ca2:c2d2 2a06:98c1:50::ac40:22d2	raquel.ns.cloudflare.com raquel.ns.cloudflare.com raquel.ns.cloudflare.com raquel.ns.cloudflare.com raquel.ns.cloudflare.com raquel.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 54ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.13.87	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.199.28	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records3 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mx1-dk.centerasecurity.dk	128.76.60.167 128.76.60.187 89.233.19.127 89.233.19.127 89.233.19.188 89.233.19.188	mx6.centerasecurity.dk mx6.centerasecurity.dk 127.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 188.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S
10	600s	mx2-dk.centerasecurity.dk	128.76.60.168 128.76.60.169 89.233.19.128 89.233.19.128 89.233.19.129 89.233.19.129	mx6.centerasecurity.dk mx6.centerasecurity.dk 128.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 129.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S
20	600s	mx3-dk.centerasecurity.dk	128.76.60.187 89.233.19.129 89.233.19.129	mx6.centerasecurity.dk 129.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.8
🔶 Autoconfig	104.21.13.87

🔷 AAAA Records (IPv6)2 records 31ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:c71c	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:d57	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 31ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.13.87,172.67.199.28 ech=AEX+DQBB/gAgACAnuCLIXezknBDnLGwSJB4sSOJ0J0KiFt51ZX5amyeyPgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:c71c,2606:4700:3035::6815:d57

📝 TXT Records2 records 180ms

TXT Record
MS=ms27906047
v=spf1 include:_spf.centerasecurity.dk include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (gt3.dk)
-all (hard fail)	v=spf1 include:_spf.centerasecurity.dk include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.gt3.dk)
p=reject	v=DMARC1; p=reject;

📬 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.gt3.dk	LTysr6amKFK713WyPNWKt2iLgKpu3nMtvKKisAaQeto
TXT	_acme-challenge.gt3.dk	MRX5mwAQuhdlNFg23LTZDLis3bNlEGVE8NP2bqXIBIo

🔗 TLSA / DANE6 records 72ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx1-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx3-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx3-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…

🔐 DNSSEC121ms

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

🏷️ SOA0ms

Field	Value
Serial	2413408251
Primary NS (MNAME)	lochlan.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

26ms

A

54ms

MX

31ms

AAAA

31ms

TXT

180ms

CAA

25ms

HTTPS

31ms

TLSA

72ms

SOA

0ms

MTA-STS

56ms

DNSSEC

121ms

SRV

69ms

Total

1241ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 11:00:23	1241ms	2 NS 2 A 3 MX	🔒 Secure	View
2026-08-28 08:14:50	968ms	2 NS 2 A 3 MX	🔒 Secure	View
2026-08-27 00:11:31	792ms	2 NS 2 A 3 MX	🔒 Secure	View
2026-08-22 02:20:21	14229ms	2 NS 2 A 3 MX	🔒 Secure	View
2026-08-15 21:27:35	1784ms	2 NS 2 A 3 MX	🔒 Secure	View
2026-07-26 11:32:02	41309ms	2 NS 2 A 3 MX	🔒 Secure	View
2026-07-23 03:20:15	10454ms	2 NS 2 A 3 MX	🔒 Secure	View
2026-06-30 17:03:39	1161ms	2 NS 2 A 3 MX	🔒 Secure	View
2026-06-22 02:55:56	809ms	2 NS 2 A 3 MX	🔒 Secure	View
2026-06-17 10:12:32	4350ms	2 NS 2 A 3 MX	🔒 Secure	View