gtf.dk

📜 Historical scan 2026-09-22 09:16:48 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gtf.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 15 March 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.250 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by gtf-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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#

4 records 38ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 31ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.250	3600s	linux337.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records#

1 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	gtf-dk.mail.protection.outlook.com	2a01:111:f403:ca04::a 2a01:111:f403:ca21::8 2a01:111:f403:ca21::e 2a01:111:f403:ca3c::6 52.101.103.140 52.101.185.114 52.101.68.29 52.101.91.159	mail-du0pr03cu00102.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-matpr04cu00306.inbound.protection.outlook.com mail-zrxpr04cu00106.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-zrxpr04cu00102.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-matpr04cu00207.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 → 40.104.116.24
🔶 Autoconfig	93.191.156.250

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 53ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com

📝 TXT Records#

2 records 140ms

TXT Record
MS=ms66959920
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (gtf.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 2026-10-13 12:11:30

www	93.191.156.250 (AS48854) (address records, no CNAME)
www vs bare domain	Same network gtf.dk: 93.191.156.250 (AS48854) www.gtf.dk: 93.191.156.250 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 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#

76ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026091001
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-01 10:41:53

Field	Value
Registrar	Simply.com A/S
Registered	2013-03-15
Expires	2027-03-31 (164d)

📋 WHOIS#

⏱️ Lookup Timing#

38ms

31ms

49ms

AAAA

29ms

TXT

140ms

CAA

35ms

HTTPS

40ms

TLSA

316ms

SOA

0ms

MTA-STS

57ms

DNSSEC

76ms

SRV

53ms

Total

816ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 12:11:30	1089ms	4 NS 1 A 1 MX	🔒 Secure
2026-10-01 10:11:57	956ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-22 09:16:48 shown	816ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-16 08:05:15	1255ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-01 22:22:33	1456ms	4 NS 1 A 1 MX	🔒 Secure
2026-08-22 06:37:32	1944ms	4 NS 1 A 1 MX	🔒 Secure
2026-08-21 06:27:07	4049ms	4 NS 1 A 1 MX	🔒 Secure
2026-08-12 01:40:19	1016ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-17 10:48:45	493ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-17 10:41:01	600ms	4 NS 1 A 0 MX	🔒 Secure