0u.dk

📜 Historical scan 2026-07-24 23:48:11 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

0u.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 3 December 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 85.191.207.109 is hosted by Sinal A/S (AS39642) in Denmark. Mail is handled by mail.0u.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 33ms

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 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
85.191.207.109	3600s	—	AS39642	Sinal A/S	85.191.128.0/17	🇩🇰 Denmark	Tylstrup

📧 MX Records#

1 records 33ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mail.0u.dk	85.191.207.109	—	AS39642 Sinal A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	0u.dk → 85.191.207.109
🔶 Autoconfig	0u.dk → 85.191.207.109

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 156ms

TXT Record
v=spf1 redirect=spf1.yey.dk

✉️ SPF#

Policy	Record (0u.dk)
redirect=spf1.yey.dk	v=spf1 redirect=spf1.yey.dk

📨 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 2026-10-07 21:59:06

www CNAME	0u.dk (all on 0u.dk) → 85.191.207.109 (AS39642)
www vs bare domain	Same network 0u.dk: 85.191.207.109 (AS39642) www.0u.dk: 85.191.207.109 (AS39642)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.0u.dk	0u.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2043ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026072401
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 20:08:44

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2008-12-03
Expires	2026-12-31 (75d)

📋 WHOIS#

⏱️ Lookup Timing#

33ms

AAAA

23ms

TXT

156ms

CAA

32ms

HTTPS

33ms

TLSA

59ms

SOA

0ms

MTA-STS

45ms

DNSSEC

2043ms

SRV

48ms

Total

2609ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 21:59:06	401ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 20:56:38	472ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 22:49:34	728ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 22:07:13	560ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-07 22:40:24	590ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-25 22:37:09	649ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-24 20:33:18	2406ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-24 23:48:11 shown	2609ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-23 23:08:26	49374ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-26 10:54:51	1463ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 18:23:31	1196ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:33:47	1017ms	2 NS 1 A 1 MX	🔒 Secure