gc-as.dk

📜 Historical scan 2026-10-08 00:45:19 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gc-as.dk is a .dk domain served by 2 nameservers (kira.ns.cloudflare.com, randy.ns.cloudflare.com). It was registered on 10 October 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.14.25 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by gcas-dk0e.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 36ms

Nameserver	IP addresses	PTR	ASN / ISP
kira.ns.cloudflare.com	108.162.194.197 162.159.38.197 172.64.34.197 2606:4700:50::a29f:26c5 2803:f800:50::6ca2:c2c5 2a06:98c1:50::ac40:22c5	kira.ns.cloudflare.com kira.ns.cloudflare.com kira.ns.cloudflare.com kira.ns.cloudflare.com kira.ns.cloudflare.com kira.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
randy.ns.cloudflare.com	108.162.195.109 162.159.44.109 172.64.35.109 2606:4700:58::a29f:2c6d 2803:f800:50::6ca2:c36d 2a06:98c1:50::ac40:236d	randy.ns.cloudflare.com randy.ns.cloudflare.com randy.ns.cloudflare.com randy.ns.cloudflare.com randy.ns.cloudflare.com randy.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.14.25	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.157.160	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	gcas-dk0e.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca04::a 2a01:111:f403:ca21::10 2a01:111:f403:ca48::10 52.101.103.143 52.101.68.15 52.101.68.25 52.101.73.120	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-matpr05cu00100.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-am7pr02cu00300.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.154.136

🔷 AAAA Records (IPv6)#

2 records 40ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::6815:e19	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:9da0	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 48ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.14.25,172.67.157.160 ech=AEX+DQBB+wAgACAapGNUB+r5nt7b1RH3tKzfdHiCSWwS4ih5lmKb5z+XQwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:e19,2606:4700:3037::ac43:9da0

🔌 SRV Records#

1 records 81ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

1 records 175ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:spf-eu.letsignit.com include:spf-ca.letsignit.com include:spf-us.letsignit.com -all

✉️ SPF#

Policy	Record (gc-as.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.emailsignatures365.com include:spf-eu.letsignit.com include:spf-ca.letsignit.com include:spf-us.letsignit.com -all

📨 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 2026-10-09 00:47:37

www	104.21.14.25 172.67.157.160 2606:4700:3035::6815:e19 2606:4700:3037::ac43:9da0 (AS13335) (address records, no CNAME)
www vs bare domain	Same network gc-as.dk: 104.21.14.25 172.67.157.160 2606:4700:3035::6815:e19 2606:4700:3037::ac43:9da0 (AS13335) www.gc-as.dk: 104.21.14.25 172.67.157.160 2606:4700:3035::6815:e19 2606:4700:3037::ac43:9da0 (AS13335)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-gcas-dk0e._domainkey.gcasdk.onmicrosoft.com	RSA · ~2048 bit
selector2	selector2-gcas-dk0e._domainkey.gcasdk.onmicrosoft.com	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

66ms

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

🏷️ SOA#

43ms

Field	Value
Serial	2413844777
Primary NS (MNAME)	kira.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-22 13:09:36

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-10-10
Expires	2026-12-31 (68d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

36ms

39ms

35ms

AAAA

40ms

TXT

175ms

CAA

32ms

HTTPS

48ms

TLSA

645ms

SOA

43ms

MTA-STS

68ms

DNSSEC

66ms

SRV

81ms

Total

1133ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 00:47:37	1517ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-08 00:45:19 shown	1133ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-09 10:07:32	1540ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-06 10:41:45	1783ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-07 10:02:34	1818ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-05 20:10:26	2146ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-28 00:47:34	2405ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-27 02:39:12	1261ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-20 07:51:30	1858ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 09:27:32	3224ms	2 NS 2 A 1 MX	🔓 Insecure