gcos.dk

📜 Historical scan 2026-06-17 10:06:17 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gcos.dk is a .dk domain served by 2 nameservers (auth01.t26.dk, auth02.t26.dk). It was registered on 21 April 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.221.228.148 is hosted by Unit IT Services ApS (AS42876) in Denmark. Mail is handled by gcos-dk.mx1.antispam.gcos.dk. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 113ms

Nameserver	IP addresses	PTR	ASN / ISP
auth01.t26.dk	77.221.251.240	name1.t26.dk	AS42876 Unit IT A/S
auth02.t26.dk	77.221.251.241	name2.t26.dk	AS42876 Unit IT A/S

🌍 A Records#

1 records 109ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.221.228.148	—	—	AS42876	Unit IT Services ApS	77.221.224.0/19	🇩🇰 Denmark	Ballerup Municipality

📧 MX Records#

1 records 127ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	gcos-dk.mx1.antispam.gcos.dk	77.221.226.31 77.221.226.31 77.221.226.31	gcos-dk.mx1.antispam.gcos.dk antispam.gcos.dk midttrafik-dk.mx1.antispam.gcos.dk	AS42876 Unit IT A/S AS42876 Unit IT A/S AS42876 Unit IT A/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

8 records 198ms

TXT Record
_globalsign-domain-verification=Y681W5RceLzqo3BLkS6qu_7rSVzCNpTBlvvQX-8qNb
_p6erga1z1m9xv2670av4o64j7hyz0u5
3rbcyeRvYOyynF6F92s3YmHl2zn008Jj0llQhCqXRwI=
89189685-7aee-4e63-bf2b-6b4fdffd8edc
globalsign-domain-verification=7zrPDhORxznqfgoxAFEc5j_3Gmbyk50h3ubxixCtn6
globalsign-domain-verification=J3eA79nN2btZyr1LmPSBMjaQ82z0UeLgrT9Hqzwvi-
MS=ms95603339
raqCimRw9WAwo6Pd+DjjHPcj8tsTA/mpb+N0OZhsMRA=

✉️ 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#

latest probe, not this scan · checked 2026-10-13 00:11:33

www CNAME	gcos.dk (all on gcos.dk) → 77.221.228.148 (AS42876)
www vs bare domain	Same network gcos.dk: 77.221.228.148 (AS42876) www.gcos.dk: 77.221.228.148 (AS42876)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

219ms

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

🏷️ SOA#

156ms

Field	Value
Serial	2017060920
Primary NS (MNAME)	name1.t26.dk
Responsible (RNAME)	support@globalconnect.dk
Refresh	14400s
Retry	3600s
Expire	3628800s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-13 12:31:05

Field	Value
Registrar	Eurodns S.A
Registered	2017-04-21
Expires	2027-04-30 (194d)

🔗 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
corporatecloud.dk	Eurodns S.A
gccloud.dk	Eurodns S.A
t26.dk	Eurodns S.A

📋 WHOIS#

⏱️ Lookup Timing#

113ms

109ms

127ms

AAAA

128ms

TXT

198ms

CAA

112ms

HTTPS

148ms

TLSA

457ms

SOA

156ms

MTA-STS

105ms

DNSSEC

219ms

SRV

0ms

Total

1104ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 00:24:43	673ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-01 10:40:43	15068ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-02 10:44:51	1736ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-17 10:06:17 shown	1104ms	2 NS 1 A 1 MX	🔓 Insecure