gfk.dk

📜 Historical scan 2026-09-19 00:29:00 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gfk.dk is a .dk domain served by 2 nameservers (lara.ns.cloudflare.com, mike.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.40.49 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by gfk-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 54ms

Nameserver	IP addresses	PTR	ASN / ISP
lara.ns.cloudflare.com	108.162.192.128 172.64.32.128 173.245.58.128 2606:4700:50::adf5:3a80 2803:f800:50::6ca2:c080 2a06:98c1:50::ac40:2080	lara.ns.cloudflare.com lara.ns.cloudflare.com lara.ns.cloudflare.com lara.ns.cloudflare.com lara.ns.cloudflare.com lara.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
mike.ns.cloudflare.com	108.162.195.63 162.159.44.63 172.64.35.63 2606:4700:58::a29f:2c3f 2803:f800:50::6ca2:c33f 2a06:98c1:50::ac40:233f	mike.ns.cloudflare.com mike.ns.cloudflare.com mike.ns.cloudflare.com mike.ns.cloudflare.com mike.ns.cloudflare.com mike.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
104.21.40.49	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.176.38	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 60ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	gfk-dk.mail.protection.outlook.com	2a01:111:f403:ca04::a 2a01:111:f403:ca04::c 2a01:111:f403:ca09::a 2a01:111:f403:ca21::a 52.101.68.16 52.101.73.123 52.101.73.126 52.101.91.21	mail-du0pr03cu00102.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-maspr04cu00102.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-am6pr02cu00203.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-matpr05cu00105.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 → 40.104.116.40

🔷 AAAA Records (IPv6)#

2 records 41ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:b026	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::6815:2831	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=104.21.40.49,172.67.176.38 ech=AEX+DQBBFwAgACAThpJsrvcoKO4NLPAHdg+EWp0L4nzNY35o2j7ye2CdDwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:b026,2606:4700:3036::6815:2831

🔌 SRV Records#

1 records 89ms

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

📝 TXT Records#

2 records 222ms

TXT Record
MS=ms43508884
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (gfk.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.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 2026-10-12 00:17:43

www	104.21.40.49 172.67.176.38 2606:4700:3030::ac43:b026 2606:4700:3036::6815:2831 (AS13335) (address records, no CNAME)
www vs bare domain	Same network gfk.dk: 104.21.40.49 172.67.176.38 2606:4700:3030::ac43:b026 2606:4700:3036::6815:2831 (AS13335) www.gfk.dk: 104.21.40.49 172.67.176.38 2606:4700:3030::ac43:b026 2606:4700:3036::6815:2831 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

9073ms

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	2415203475
Primary NS (MNAME)	lara.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

54ms

61ms

60ms

AAAA

41ms

TXT

222ms

CAA

30ms

HTTPS

58ms

TLSA

1180ms

SOA

0ms

MTA-STS

65ms

DNSSEC

9073ms

SRV

89ms

Total

10703ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 01:39:59	1222ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-19 00:29:00 shown	10703ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-26 13:03:56	1966ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-15 08:11:36	2490ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-20 17:10:51	11002ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-19 06:28:56	1635ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-17 04:51:05	11079ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-14 12:52:39	2715ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-12 14:36:46	746ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-10 08:46:09	745ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-08 15:55:21	873ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-05 06:49:17	3776ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-04 06:48:37	2232ms	1 NS 0 A 0 MX	❓ Unknown
2026-07-03 00:25:54	490ms	1 NS 0 A 0 MX	❓ Unknown
2026-06-22 17:11:34	4563ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 05:17:44	1170ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-19 16:15:45	10252ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 09:40:29	2579ms	2 NS 2 A 1 MX	🔓 Insecure