c0.dk

📜 Historical scan 2026-06-19 05:16:37 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

c0.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 8 June 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 67.199.248.12 is hosted by Google LLC (AS396982) in United States. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. The zone is DNSSEC-signed but currently fails validation, 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 83ms

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#

2 records 45ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
67.199.248.12	43200s	cname.bitly.com	AS396982	Google LLC	67.199.248.0/24	🇺🇸 United States	—
67.199.248.13	43200s	cname.bitly.com	AS396982	Google LLC	67.199.248.0/24	🇺🇸 United States	—

📧 MX Records#

7 records 66ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	43200s	aspmx.l.google.com	2a00:1450:4010:c02::1b 2a00:1450:4010:c02::1b 64.233.164.26	le-in-f27.1e100.net le-in-x1b.1e100.net lf-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
20	43200s	alt1.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1b	so-in-f26.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
20	43200s	alt2.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1b	tp-in-f27.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	43200s	aspmx2.googlemail.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	43200s	aspmx3.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
30	43200s	aspmx4.googlemail.com	192.178.230.27 2404:6800:4008:c01::1a	yunrtab-in-f27.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	43200s	aspmx5.googlemail.com	173.194.43.27 2607:f8b0:400e:c1e::1a	yudlsqd-in-f27.1e100.net yudlsqd-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

📝 TXT Records#

2 records 203ms

TXT Record
google-site-verification=okOVRIbuIMLca9_H6k_q0eBnKZhLgtywzapF-4Kh84Y
have-i-been-pwned-verification=0126d85d26723c551c87f79788fa0022

✉️ 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 2026-10-15 17:45:19

www	46.30.211.38 (AS51468) (address records, no CNAME)
www vs bare domain	Different networks c0.dk: 67.199.248.12 67.199.248.13 (AS396982) www.c0.dk: 46.30.211.38 (AS51468) (all like this)
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#

104ms

Check	Result
Validation Status	⚠️ Bogus
AD Flag (resolver validates)	✗ Not set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	broken trust chain resolving 'c0.dk/DNSKEY/IN': 127.0.0.1#53

🏷️ SOA#

69ms

Field	Value
Serial	2026032401
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 2026-10-05 17:50:08

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2004-06-08
Expires	2027-05-31 (225d)

📋 WHOIS#

⏱️ Lookup Timing#

83ms

45ms

66ms

AAAA

65ms

TXT

203ms

CAA

43ms

HTTPS

81ms

TLSA

145ms

SOA

69ms

MTA-STS

66ms

DNSSEC

104ms

SRV

86ms

Total

936ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 22:06:07	831ms	2 NS 2 A 7 MX	🔒 Secure
2026-09-23 16:14:12	916ms	2 NS 2 A 7 MX	🔒 Secure
2026-08-26 18:02:57	1104ms	2 NS 2 A 7 MX	🔒 Secure
2026-06-24 15:43:09	885ms	2 NS 2 A 7 MX	🔒 Secure
2026-06-24 02:03:01	1186ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-19 05:16:37 shown	936ms	2 NS 2 A 7 MX	⚠️ Bogus
2026-06-16 18:43:08	820ms	2 NS 2 A 7 MX	🔒 Secure
2026-06-16 18:40:24	1072ms	2 NS 2 A 7 MX	🔒 Secure