gbks.dk

📜 Historical scan 2026-09-26 19:25:56 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gbks.dk is a .dk domain served by 2 nameservers (martin.ns.cloudflare.com, walk.ns.cloudflare.com). It was registered on 3 July 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.6.160 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by gbks-dk.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 32ms

Nameserver	IP addresses	PTR	ASN / ISP
martin.ns.cloudflare.com	108.162.195.87 162.159.44.87 172.64.35.87 2606:4700:58::a29f:2c57 2803:f800:50::6ca2:c357 2a06:98c1:50::ac40:2357	martin.ns.cloudflare.com martin.ns.cloudflare.com martin.ns.cloudflare.com martin.ns.cloudflare.com martin.ns.cloudflare.com martin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
walk.ns.cloudflare.com	108.162.194.128 162.159.38.128 172.64.34.128 2606:4700:50::a29f:2680 2803:f800:50::6ca2:c280 2a06:98c1:50::ac40:2280	walk.ns.cloudflare.com walk.ns.cloudflare.com walk.ns.cloudflare.com walk.ns.cloudflare.com walk.ns.cloudflare.com walk.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 61ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.6.160	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.135.3	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	gbks-dk.mail.protection.outlook.com	2a01:111:f403:ca04::e 2a01:111:f403:ca09::22 2a01:111:f403:ca09::28 2a01:111:f403:ca38::a 52.101.68.10 52.101.73.126 52.101.73.145 52.101.91.162	mail-db8pr02cu00106.inbound.protection.outlook.com mail-am7pr02cu00302.inbound.protection.outlook.com mail-am6pr02cu00300.inbound.protection.outlook.com mail-wa4pr05cu00102.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am6pr02cu00301.inbound.protection.outlook.com mail-matpr04cu00302.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	104.21.6.160
🔶 Autoconfig	104.21.6.160

🔷 AAAA Records (IPv6)#

2 records 59ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:6a0	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:8703	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 58ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.6.160,172.67.135.3 ech=AEX+DQBBdAAgACBjEPOpr4CoOtieuXOxYlVxZesNpiBFOa5e33U90X77XAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:6a0,2606:4700:3037::ac43:8703

📝 TXT Records#

3 records 312ms

TXT Record
google-site-verification=nAoSM02Fj42mTsWjEyTCzHnO1lHFxjwckLYcaSoqdls
MS=ms35371745
v=spf1 a mx include:spf.curanet.dk include:spf.protection.outlook.com include:web.shared.mysmtp.com ip4:193.8.36.0/22 ~all

✉️ SPF#

Policy	Record (gbks.dk)
~all (soft fail)	v=spf1 a mx include:spf.curanet.dk include:spf.protection.outlook.com include:web.shared.mysmtp.com ip4:193.8.36.0/22 ~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 2026-10-13 21:46:17

www	104.21.6.160 172.67.135.3 2606:4700:3032::6815:6a0 2606:4700:3037::ac43:8703 (AS13335) (address records, no CNAME)
www vs bare domain	Same network gbks.dk: 104.21.6.160 172.67.135.3 2606:4700:3032::6815:6a0 2606:4700:3037::ac43:8703 (AS13335) www.gbks.dk: 104.21.6.160 172.67.135.3 2606:4700:3032::6815:6a0 2606:4700:3037::ac43:8703 (AS13335)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 10/10 · policy: ~all

warn 10 of the 10 allowed DNS lookups used: one more include can break SPF

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.gbks.dk	UbjI3P2jUNTC7OuT1riMi74aGOv-Zz20Sz-oCZ52ud4
TXT	_acme-challenge.gbks.dk	gQPnE8QtspsfwdpLzte_9jPpEYWo5-_hSw-a6wtQZWE

🔗 TLSA / DANE#

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

🔐 DNSSEC#

85ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2415816609
Primary NS (MNAME)	martin.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-13 21:58:32

Field	Value
Registrar	DANDOMAIN A/S
Registered	2008-07-03
Expires	2027-07-31 (287d)

🔗 Same registrant#

1 domain

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
norlinger.dk	DANDOMAIN A/S

📋 WHOIS#

⏱️ Lookup Timing#

32ms

61ms

41ms

AAAA

59ms

TXT

312ms

CAA

62ms

HTTPS

58ms

TLSA

181ms

SOA

0ms

MTA-STS

93ms

DNSSEC

85ms

SRV

117ms

Total

866ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 21:46:16	4149ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-02 08:19:06	860ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-01 08:09:01	1244ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-29 19:51:15	1471ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-28 19:40:32	906ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-26 19:25:56 shown	866ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-25 18:34:48	1967ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-19 20:55:15	1149ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-14 13:55:07	2768ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-07 10:13:03	1958ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-04 16:36:36	879ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-31 09:38:32	3282ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 17:13:45	1326ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-15 21:52:51	1463ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-23 16:08:20	3147ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-22 10:34:38	1173ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 15:12:02	1317ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 10:07:51	9376ms	2 NS 2 A 1 MX	🔓 Insecure