gchq.dk

Records from scan: 2026-10-21 13:54:57 · 1337ms total · last checked 2026-10-23 00:14 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gchq.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 12 December 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.54.180.191 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by .. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 274ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 282ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
87.54.180.191	43200s	87-54-180-191-dynamic.dk.customer.tdc.net	AS3292	TDC Holding A/S	87.48.0.0/13	🇩🇰 Denmark	Aabenraa

📧 MX Records#

1 records 300ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	. Null MX — domain accepts no email (RFC 7505)

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	gchq.dk → 87.54.180.191
🔶 Autoconfig	gchq.dk → 87.54.180.191

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 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

🧩 Web & zone#

checked 2026-10-21 13:54:57

www CNAME	gchq.dk (all on gchq.dk) → 87.54.180.191 (AS3292)
www vs bare domain	Same network gchq.dk: 87.54.180.191 (AS3292) www.gchq.dk: 87.54.180.191 (AS3292)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.gchq.dk	gchq.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

401ms

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

🏷️ SOA#

69ms

Field	Value
Serial	2026102001
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-16 12:02:53

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2009-12-12
Expires	2026-12-31 (68d)

🔗 Same registrant#

3 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
apptimizers.dk	Punktum dk A/S (direct)
portopriser.dk	Punktum dk A/S (direct)
wearit-shareit.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

274ms

282ms

300ms

AAAA

309ms

TXT

471ms

CAA

308ms

HTTPS

306ms

TLSA

208ms

SOA

69ms

MTA-STS

304ms

DNSSEC

401ms

SRV

343ms

Total

1337ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 13:54:57 shown	1337ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-16 11:28:24	1145ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 17:11:30	860ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-07 06:12:13	2712ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-14 09:09:41	5079ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-26 01:10:28	2854ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-22 09:21:49	1178ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 00:03:09	948ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-21 19:54:02	1185ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 10:08:44	2459ms	2 NS 1 A 4 MX	🔒 Secure