gbu.dk

📜 Historical scan 2026-10-04 10:01:52 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gbu.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 26 September 2026 (WHOIS) and first appeared in the .dk zone on 27 September 2026. Its website address 162.19.49.84 is hosted by OVH SAS (AS16276) in France. Mail is handled by gbu-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#

2 records 211ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 118ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
162.19.49.84	600s	—	AS16276	OVH SAS	162.19.0.0/16	🇫🇷 France	—

📧 MX Records#

1 records 239ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	gbu-dk.mail.protection.outlook.com	2a01:111:f403:c967:: 2a01:111:f403:c967::2 2a01:111:f403:c967::4 2a01:111:f403:c967::6 52.101.209.2 52.101.209.4 52.101.209.6 52.101.209.74	mail-cpcp307cu00400.inbound.protection.outlook.com mail-cpap307cu00402.inbound.protection.outlook.com mail-cpap307cu00204.inbound.protection.outlook.com mail-cpcp307cu00206.inbound.protection.outlook.com mail-cpap307cu00402.inbound.protection.outlook.com mail-cpap307cu00204.inbound.protection.outlook.com mail-cpcp307cu00206.inbound.protection.outlook.com mail-cpcp307cu00402.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 → 52.98.154.152

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 607ms

TXT Record
MS=ms99680199
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (gbu.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 2026-10-14 03:44:49

www	46.30.211.38 (AS51468) (address records, no CNAME)
www vs bare domain	Different networks gbu.dk: 162.19.49.84 (AS16276) www.gbu.dk: 46.30.211.38 (AS51468) (all like this)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 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#

437ms

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

🏷️ SOA#

116ms

Field	Value
Serial	2026100315
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-14 04:15:31

Field	Value
Registrar	ONE.COM A/S
Registered	2026-09-26
Expires	2027-09-25 (338d)

🔗 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#

211ms

118ms

239ms

AAAA

127ms

TXT

607ms

CAA

126ms

HTTPS

104ms

TLSA

1268ms

SOA

116ms

MTA-STS

194ms

DNSSEC

437ms

SRV

569ms

Total

3244ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 03:44:48	1126ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-04 10:01:52 shown	3244ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-03 09:54:35	2391ms	2 NS 1 A 5 MX	🔒 Secure
2026-10-01 09:50:13	580ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-28 09:08:14	798ms	2 NS 1 A 5 MX	🔒 Secure
2026-09-27 08:46:31	1514ms	2 NS 1 A 5 MX	🔓 Insecure