9u.dk

Records from scan: 2026-10-21 02:21:04 · 1528ms total · last checked 2026-10-24 14:07 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

9u.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 8 September 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 95.128.28.29 is hosted by Danmarks Tekniske Universitet (AS198455) in Denmark. Mail is handled by .. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 27ms

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 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
95.128.28.29	43200s	—	AS198455	Danmarks Tekniske Universitet	95.128.24.0/21	🇩🇰 Denmark	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	. Null MX — domain accepts no email (RFC 7505)

🔷 AAAA Records (IPv6)#

1 records 25ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2001:878:0:fff2::5	43200s	—	AS1835	FSKNET-DK Forskningsnettet - Danish network for Research and Education	2001:878:0:0:0:0:0:0/30	🇩🇰 Denmark	—

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝

No TXT records found

✉️ 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#

checked 2026-10-21 02:21:04

www CNAME	9u.dk (all on 9u.dk) → 95.128.28.29 2001:878:0:fff2::5 (AS1835 AS198455)
www vs bare domain	Same network 9u.dk: 95.128.28.29 2001:878:0:fff2::5 (AS1835 AS198455) www.9u.dk: 95.128.28.29 2001:878:0:fff2::5 (AS1835 AS198455)
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#

100ms

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

🏷️ SOA#

46ms

Field	Value
Serial	2026101301
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 2026-10-13 00:42:44

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2013-09-08
Expires	2027-09-30 (339d)

🔗 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#

27ms

37ms

41ms

AAAA

25ms

TXT

105ms

CAA

28ms

HTTPS

30ms

TLSA

1173ms

SOA

46ms

MTA-STS

43ms

DNSSEC

100ms

SRV

36ms

Total

1528ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 02:21:04 shown	1528ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-13 11:06:19	1805ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-14 22:30:21	4445ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-12 06:09:19	3987ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-24 02:43:14	4892ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-14 13:40:19	1750ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-14 08:52:10	518ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-27 04:18:50	1364ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 14:56:49	1158ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 12:47:41	527ms	2 NS 1 A 0 MX	🔒 Secure