gsfb.dk DNS records

🖥️ Nameservers2 records 31ms

Nameserver	IP addresses	PTR	ASN / ISP
lex.ns.cloudflare.com	108.162.193.196 172.64.33.196 173.245.59.196 2606:4700:58::adf5:3bc4 2803:f800:50::6ca2:c1c4 2a06:98c1:50::ac40:21c4	lex.ns.cloudflare.com lex.ns.cloudflare.com lex.ns.cloudflare.com lex.ns.cloudflare.com lex.ns.cloudflare.com lex.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
treasure.ns.cloudflare.com	108.162.194.116 162.159.38.116 172.64.34.116 2606:4700:50::a29f:2674 2803:f800:50::6ca2:c274 2a06:98c1:50::ac40:2274	treasure.ns.cloudflare.com treasure.ns.cloudflare.com treasure.ns.cloudflare.com treasure.ns.cloudflare.com treasure.ns.cloudflare.com treasure.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
172.67.208.95	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—
104.21.42.189	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—

📧 MX Records6 records 11ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
5	300s	aspmx.l.google.com	142.251.9.27 2a00:1450:4010:c03::1a	rc-in-f27.1e100.net lr-in-x1a.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt2.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	_dc-mx.e6bb726b2252.gsfb.dk	87.238.248.151	ns.domainteam.dk	AS198614 RockyNordic ApS
15	300s	alt3.aspmx.l.google.com	173.194.41.26 2404:6800:4003:c26::1b	yukulwh-in-f26.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
15	300s	alt4.aspmx.l.google.com	108.177.125.26 2404:6800:4003:c26::1a	tp-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)2 records 15ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3037::6815:2abd	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000::/42	—	—
2606:4700:3030::ac43:d05f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000::/42	—	—

🔐 HTTPS Records1 records 22ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.42.189,172.67.208.95 ech=AEX+DQBBwQAgACAlXGmsP7yjuE91KEMvn0SqbPVQTsh3mM/Qh4AN9hyEGAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:d05f,2606:4700:3037::6815:2abd

📝 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

🔗 TLSA / DANE

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

🔐 DNSSEC111ms

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

🏷️ SOA9ms

Field	Value
Serial	2412785668
Primary NS (MNAME)	lex.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

31ms

A

39ms

MX

11ms

AAAA

15ms

TXT

129ms

CAA

6ms

HTTPS

22ms

TLSA

381ms

SOA

9ms

MTA-STS

12ms

DNSSEC

111ms

SRV

0ms

Total

2385ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 17:12:18	2385ms	2 NS 2 A 6 MX	🔓 Insecure	View
2026-08-28 05:35:25	1135ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-08-22 05:02:39	8669ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-08-09 21:23:31	4199ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-06-27 03:55:26	1097ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-06-26 22:58:06	2456ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-06-25 23:55:31	2542ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-06-24 17:09:21	1100ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-06-17 10:05:34	5394ms	2 NS 2 A 5 MX	🔓 Insecure	View