c3.dk

📜 Historical scan 2026-08-31 20:36:12 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

c3.dk is a .dk domain served by 2 nameservers (bonnie.ns.cloudflare.com, ignacio.ns.cloudflare.com). It was registered on 20 May 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.47.161 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 47ms

Nameserver	IP addresses	PTR	ASN / ISP
bonnie.ns.cloudflare.com	108.162.192.76 172.64.32.76 173.245.58.76 2606:4700:50::adf5:3a4c 2803:f800:50::6ca2:c04c 2a06:98c1:50::ac40:204c	bonnie.ns.cloudflare.com bonnie.ns.cloudflare.com bonnie.ns.cloudflare.com bonnie.ns.cloudflare.com bonnie.ns.cloudflare.com bonnie.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
ignacio.ns.cloudflare.com	108.162.195.82 162.159.44.82 172.64.35.82 2606:4700:58::a29f:2c52 2803:f800:50::6ca2:c352 2a06:98c1:50::ac40:2352	ignacio.ns.cloudflare.com ignacio.ns.cloudflare.com ignacio.ns.cloudflare.com ignacio.ns.cloudflare.com ignacio.ns.cloudflare.com ignacio.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.47.161	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.149.17	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	2a00:1450:4010:c03::1b 2a00:1450:4010:c03::1b 64.233.164.27	lr-in-f27.1e100.net lr-in-x1b.1e100.net lf-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4000:1025::1b	lcdels-in-f26.1e100.net lcbomp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	3600s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4013:813::1a	mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	3600s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	alt4.aspmx.l.google.com	172.253.158.27 2404:6800:4008:c01::1a	so-in-f27.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records 53ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:2fa1	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:9511	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 31ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.47.161,172.67.149.17 ech=AEX+DQBBTwAgACAOmWlPq4z5qUDpGw2hdQCkGJB2jlJGHIBUXoIPWZLTWQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:2fa1,2606:4700:3037::ac43:9511

📝 TXT Records#

1 records 137ms

TXT Record
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (c3.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 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 2026-10-08 07:55:33

www	NXDOMAIN
www vs bare domain	www does not resolve c3.dk: 104.21.47.161 172.67.149.17 2606:4700:3032::6815:2fa1 2606:4700:3037::ac43:9511 (AS13335) www.c3.dk: no address (all like this)
Wildcard	No

🔎 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#

97ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2413581291
Primary NS (MNAME)	bonnie.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-12 07:50:45

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-05-20
Expires	2027-05-31 (226d)

🔗 Same registrant#

2 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
rebaser.dk	Punktum dk A/S (direct)
stopa.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

47ms

30ms

36ms

AAAA

53ms

TXT

137ms

CAA

29ms

HTTPS

31ms

TLSA

111ms

SOA

0ms

MTA-STS

63ms

DNSSEC

97ms

SRV

49ms

Total

723ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-14 20:38:07	3857ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-12 02:44:07	3297ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-31 20:36:12 shown	723ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-27 17:36:32	1008ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-17 00:31:06	1645ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-05 17:46:23	34173ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-03 12:08:34	1029ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-28 08:05:40	2546ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-16 18:47:06	535ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-16 18:40:31	749ms	2 NS 2 A 5 MX	🔓 Insecure