nu.dk

📜 Historical scan 2026-09-25 03:30:13 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

nu.dk is a .dk domain served by 2 nameservers (kehlani.ns.cloudflare.com, kolton.ns.cloudflare.com). It was registered on 19 December 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx1.spamfilter.cc. The zone is not DNSSEC-signed, 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 53ms

Nameserver	IP addresses	PTR	ASN / ISP
kehlani.ns.cloudflare.com	108.162.194.223 162.159.38.223 172.64.34.223 2606:4700:50::a29f:26df 2803:f800:50::6ca2:c2df 2a06:98c1:50::ac40:22df	kehlani.ns.cloudflare.com kehlani.ns.cloudflare.com kehlani.ns.cloudflare.com kehlani.ns.cloudflare.com kehlani.ns.cloudflare.com kehlani.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
kolton.ns.cloudflare.com	108.162.195.25 162.159.44.25 172.64.35.25 2606:4700:58::a29f:2c19 2803:f800:50::6ca2:c319 2a06:98c1:50::ac40:2319	kolton.ns.cloudflare.com kolton.ns.cloudflare.com kolton.ns.cloudflare.com kolton.ns.cloudflare.com kolton.ns.cloudflare.com kolton.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 44ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx1.spamfilter.cc	2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5 95.179.139.219 95.179.218.56	— 95.179.139.219.vultrusercontent.com 95.179.218.56.vultrusercontent.com	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.165.108
🔶 Autoconfig	172.67.165.108

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 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#

latest probe, not this scan · checked 2026-10-09 11:30:20

www	104.21.73.187 172.67.165.108 2606:4700:3030::6815:49bb 2606:4700:3033::ac43:a56c (AS13335) (address records, no CNAME)
www vs bare domain	Only www resolves nu.dk: no address www.nu.dk: 104.21.73.187 172.67.165.108 2606:4700:3030::6815:49bb 2606:4700:3033::ac43:a56c (AS13335) (all like this)
Wildcard	Yes: any name under the zone resolves

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.nu.dk	4K5ReSs_FJVpY0CX1XwzM-fO4UrnAoo3VvFL5IfN5iw
TXT	_acme-challenge.nu.dk	IIf5cuAL6xn4KFD067MNgWrDZaT39EccDNvOLIBnTxE

🔗 TLSA / DANE#

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

🔐 DNSSEC#

118ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

0ms

Field	Value
Serial	2415737238
Primary NS (MNAME)	kehlani.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-18 07:01:09

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-12-19
Expires	2026-12-31 (71d)

🔗 Same registrant#

19 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
bazo.dk	Punktum dk A/S (direct)
bie-kunst.dk	Punktum dk A/S (direct)
levendetv.dk	Punktum dk A/S (direct)
madmedmads.dk	Punktum dk A/S (direct)
nær-dig.dk	Punktum dk A/S (direct)
start-side.dk	Punktum dk A/S (direct)
startside.dk	Punktum dk A/S (direct)
startsiden.dk	Punktum dk A/S (direct)
tv-station.dk	Punktum dk A/S (direct)
tv2east.dk	Punktum dk A/S (direct)
tv2ost.dk	Punktum dk A/S (direct)
tv2ostlobet.dk	Punktum dk A/S (direct)
tv2reg.dk	Punktum dk A/S (direct)
tvost.dk	Punktum dk A/S (direct)
tvsj.dk	Punktum dk A/S (direct)
tvst.dk	Punktum dk A/S (direct)
tvøstløbet.dk	Punktum dk A/S (direct)
xborg.dk	Punktum dk A/S (direct)
østløbet.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

53ms

40ms

44ms

AAAA

35ms

TXT

186ms

CAA

36ms

HTTPS

36ms

TLSA

42ms

SOA

0ms

MTA-STS

56ms

DNSSEC

118ms

SRV

73ms

Total

1687ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 11:30:20	881ms	2 NS 0 A 1 MX	🔓 Insecure
2026-10-08 01:31:53	1476ms	2 NS 0 A 1 MX	🔓 Insecure
2026-10-01 04:59:57	762ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-26 03:59:25	1091ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-25 03:30:13 shown	1687ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-21 17:36:12	1181ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-17 21:05:14	1909ms	4 NS 4 A 0 MX	🔓 Insecure
2026-09-07 06:39:52	1147ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-27 00:33:22	17568ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-21 09:42:10	1318ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-26 11:53:47	3530ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-21 03:24:05	536ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-18 11:08:38	1425ms	2 NS 0 A 1 MX	🔓 Insecure