tc.dk

📜 Historical scan 2026-09-26 06:56:35 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tc.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 31 January 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.183.138.100 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. The zone is DNSSEC-signed and validates, publishes a 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 41ms

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 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.183.138.100	50000s	—	AS47292	Sentia Denmark A/S	46.183.138.0/23	🇩🇰 Denmark	—

📧 MX Records#

7 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	aspmx.l.google.com	2a00:1450:4010:c0f::1b 2a00:1450:4010:c0f::1b 64.233.164.26	lt-in-x1b.1e100.net lt-in-f27.1e100.net lf-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
20	43200s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
20	43200s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1a	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
30	43200s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	43200s	aspmx3.googlemail.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1a	mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
30	43200s	aspmx4.googlemail.com	172.253.158.27 2404:6800:4003:c26::1a	so-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	43200s	aspmx5.googlemail.com	108.177.125.27 2404:6800:4008:c01::1a	tp-in-f27.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

3 records 68ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	autodiscover.gigahost.dk
_xmpp-server._tcp	0	0	5269	xmpp-server1.l.google.com
_xmpp-server._tcp	0	0	5269	xmpp-server.l.google.com

📝 TXT Records#

3 records 133ms

TXT Record
abuse: abuse@tc.dk
google-site-verification=SRfOzL8U33L8nGO3_xhLXrgTd3ZF57ZxxSaTArlhDCw
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (tc.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.tc.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:dmarc@tc.dk; fo=1

📬 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 14:33:33

www CNAME	tc.dk (all on tc.dk) → 46.183.138.100 (AS47292)
www vs bare domain	Same network tc.dk: 46.183.138.100 (AS47292) www.tc.dk: 46.183.138.100 (AS47292)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
google	—	RSA · ~2048 bit

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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

112ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026092501
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 15:07:15

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-01-31
Expires	2027-03-31 (163d)

🔗 Same registrant#

3 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
erdetkage.dk	ONE.COM A/S
membrr.dk	ONE.COM A/S
twomas.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

41ms

40ms

AAAA

37ms

TXT

133ms

CAA

33ms

HTTPS

36ms

TLSA

304ms

SOA

0ms

MTA-STS

68ms

DNSSEC

112ms

SRV

68ms

Total

1116ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 14:33:33	954ms	2 NS 1 A 7 MX	🔒 Secure
2026-10-08 23:58:47	987ms	2 NS 1 A 7 MX	🔒 Secure
2026-10-06 23:46:53	2277ms	2 NS 1 A 7 MX	🔒 Secure
2026-09-30 19:20:30	700ms	2 NS 1 A 7 MX	🔒 Secure
2026-09-26 06:56:35 shown	1116ms	2 NS 1 A 7 MX	🔒 Secure
2026-09-25 06:38:41	908ms	2 NS 1 A 7 MX	🔒 Secure
2026-09-06 20:10:47	1944ms	2 NS 1 A 7 MX	🔒 Secure
2026-09-01 23:36:50	834ms	2 NS 1 A 7 MX	🔒 Secure
2026-08-22 05:35:04	11820ms	2 NS 1 A 7 MX	🔒 Secure
2026-08-09 23:31:57	5319ms	2 NS 1 A 7 MX	🔒 Secure
2026-06-23 15:37:29	903ms	2 NS 1 A 7 MX	🔒 Secure
2026-06-17 13:18:12	866ms	2 NS 1 A 7 MX	🔒 Secure