tac.dk

📜 Historical scan 2026-06-17 17:43:41 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tac.dk is a .dk domain served by 2 nameservers (hattie.ns.cloudflare.com, henrik.ns.cloudflare.com). It was registered on 16 June 1994 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 89.23.224.28 is hosted by Fiberby ApS (AS42541) in Denmark. 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 61ms

Nameserver	IP addresses	PTR	ASN / ISP
hattie.ns.cloudflare.com	108.162.194.172 162.159.38.172 172.64.34.172 2606:4700:50::a29f:26ac 2803:f800:50::6ca2:c2ac 2a06:98c1:50::ac40:22ac	hattie.ns.cloudflare.com hattie.ns.cloudflare.com hattie.ns.cloudflare.com hattie.ns.cloudflare.com hattie.ns.cloudflare.com hattie.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
henrik.ns.cloudflare.com	108.162.195.105 162.159.44.105 172.64.35.105 2606:4700:58::a29f:2c69 2803:f800:50::6ca2:c369 2a06:98c1:50::ac40:2369	henrik.ns.cloudflare.com henrik.ns.cloudflare.com henrik.ns.cloudflare.com henrik.ns.cloudflare.com henrik.ns.cloudflare.com henrik.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

1 records 63ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
89.23.224.28	—	carrier-grade-nat-ip-029.vgcar3.cgn.fiberby.net	AS42541	Fiberby ApS	89.23.224.0/19	🇩🇰 Denmark	Copenhagen

📧 MX Records#

📧

No MX records found

🔷 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 2026-10-14 05:53:41

www	Exists, no address
www vs bare domain	www does not resolve tac.dk: 104.21.52.46 172.67.195.96 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) www.tac.dk: no address (all like this)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	RSA Invalid key data — receivers can't verify signatures

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔗 TLSA / DANE#

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

🔐 DNSSEC#

124ms

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

🏷️ SOA#

60ms

Field	Value
Serial	2405858884
Primary NS (MNAME)	hattie.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-14 06:18:27

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1994-06-16
Expires	2028-06-30 (620d)

🔗 Same registrant#

14 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
bacula.dk	Punktum dk A/S (direct)
biger.dk	Punktum dk A/S (direct)
blueserver.dk	Punktum dk A/S (direct)
blueservice.dk	Punktum dk A/S (direct)
boeslunde.dk	Punktum dk A/S (direct)
kuvertdanmark.dk	Punktum dk A/S (direct)
kviktryk.dk	Punktum dk A/S (direct)
navnskilt.dk	Punktum dk A/S (direct)
plakat-tryk.dk	Punktum dk A/S (direct)
plakattryk.dk	Punktum dk A/S (direct)
prepress.dk	Punktum dk A/S (direct)
skiltselv.dk	Punktum dk A/S (direct)
visco.dk	Punktum dk A/S (direct)
web4print.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

61ms

63ms

74ms

AAAA

60ms

TXT

164ms

CAA

68ms

HTTPS

65ms

TLSA

200ms

SOA

60ms

MTA-STS

94ms

DNSSEC

124ms

SRV

0ms

Total

717ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 05:53:41	572ms	2 NS 2 A 4 MX	🔒 Secure
2026-10-08 11:52:53	3154ms	2 NS 2 A 4 MX	🔒 Secure
2026-10-03 08:13:42	665ms	2 NS 2 A 4 MX	🔒 Secure
2026-09-28 14:59:44	948ms	2 NS 2 A 4 MX	🔒 Secure
2026-09-27 14:50:50	828ms	2 NS 2 A 4 MX	🔒 Secure
2026-09-21 22:50:12	928ms	2 NS 2 A 4 MX	🔒 Secure
2026-09-07 22:35:59	1428ms	2 NS 2 A 4 MX	🔒 Secure
2026-08-20 11:54:16	974ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-17 05:40:30	3128ms	2 NS 1 A 0 MX	🔒 Secure
2026-08-11 05:09:45	2135ms	2 NS 1 A 0 MX	🔒 Secure
2026-08-07 21:23:15	1173ms	2 NS 1 A 0 MX	🔒 Secure
2026-07-29 07:50:53	1594ms	2 NS 1 A 0 MX	🔒 Secure
2026-07-23 23:51:05	1745ms	2 NS 1 A 0 MX	🔒 Secure
2026-07-17 22:55:49	1059ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-30 02:30:28	1014ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-25 16:27:22	990ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-20 16:51:44	782ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-19 17:53:37	514ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-17 17:43:41 shown	717ms	2 NS 1 A 0 MX	🔒 Secure