dubu.dk

📜 Historical scan 2026-07-18 21:42:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

dubu.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 7 June 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.44.139.83 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mail.dubu.dk. 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 204ms

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 170ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.44.139.83	600s	netcompany.com	AS3292	TDC Holding A/S	5.44.136.0/21	🇩🇰 Denmark	—

📧 MX Records#

1 records 177ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
5	43200s	mail.dubu.dk	109.236.177.160	mail.dubu.dk	AS25384 Kyndryl Danmark ApS

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

6 records 322ms

TXT Record
_globalsign-domain-verification=-FIJhLighrmtT8SFYI9RSI6M9KhktdiYS7c8XvEYCe
_globalsign-domain-verification=diff_L2lZ7vjZZGskXvh7ZZpWhNz5Wd8dxFLB9k3Qb
/6/6kUEJgmg1S2tf0gDpVN6CCEZ4taP7sK+ohRMT3Bw=
fsVNBhfyiNfHT34A80UrRPtUa9qLnJP3j/CFvsqMIAc=
NoWzh5r/EHudNY1pgjyFem6zD04UF9UxNoFZ5oR6Xfc=
q+T8xZEUxsiKl2IKH7fSZl1BHwvJ25mjL1Vy1+mQsFo=

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 08:36:42

www CNAME	dubu.dk (all on dubu.dk) → 5.44.139.83 (AS3292)
www vs bare domain	Same network dubu.dk: 5.44.139.83 (AS3292) www.dubu.dk: 5.44.139.83 (AS3292)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

302ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026071801
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 2026-10-19 11:43:35

Field	Value
Registrar	ONE.COM A/S
Registered	2007-06-07
Expires	2027-06-30 (253d)

🔗 Same registrant#

29 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).

Domain	Registrar
administrationsmodul.dk	Punktum dk A/S (direct)
aulainfo.dk	Punktum dk A/S (direct)
bbr-data.dk	Punktum dk A/S (direct)
bbradgang.dk	Punktum dk A/S (direct)
bbrdata.dk	Punktum dk A/S (direct)
bygogmiljoe.dk	A/S SCANNET
bygogmiljø.dk	A/S SCANNET
digitaliseringskatalog.dk	Punktum dk A/S (direct)
digitaliseringskataloget.dk	Punktum dk A/S (direct)
dkvalg.dk	Punktum dk A/S (direct)
eflis.dk	Punktum dk A/S (direct)
eksterntest-stoettesystemerne.dk	Punktum dk A/S (direct)
kommune-cert.dk	Punktum dk A/S (direct)
kommune-holding.dk	Punktum dk A/S (direct)
kommunernessygedagpengesystem.dk	Punktum dk A/S (direct)
kommunernesydelsessystem.dk	Punktum dk A/S (direct)
mitsygefravær.dk	Punktum dk A/S (direct)
nem-refusion.dk	Punktum dk A/S (direct)
pensionfrakommunen.dk	Punktum dk A/S (direct)
sapaoverblik.dk	Punktum dk A/S (direct)
serviceplatformen.dk	Punktum dk A/S (direct)
socialtfrikort.dk	A/S SCANNET
stottesystemerne.dk	Punktum dk A/S (direct)
valg.dk	Punktum dk A/S (direct)
valgdk.dk	Punktum dk A/S (direct)
valghjemmeside.dk	Punktum dk A/S (direct)
valgresultater.dk	Punktum dk A/S (direct)
valgweb.dk	Punktum dk A/S (direct)
ydelsesrefusion.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

204ms

170ms

177ms

AAAA

151ms

TXT

322ms

CAA

197ms

HTTPS

217ms

TLSA

188ms

SOA

0ms

MTA-STS

242ms

DNSSEC

302ms

SRV

234ms

Total

1393ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 08:36:42	1864ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 18:34:25	4493ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-17 19:50:47	1282ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 22:57:36	4606ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-21 14:29:13	8699ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-13 11:38:20	756ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-18 21:42:46 shown	1393ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-16 17:02:17	4894ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 10:45:42	1351ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 16:16:14	3387ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 13:50:45	1099ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-19 23:17:18	4404ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 04:55:38	593ms	2 NS 1 A 1 MX	🔒 Secure