c400.dk

📜 Historical scan 2026-06-16 18:46:28 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

c400.dk is a .dk domain served by 2 nameservers (heather.ns.cloudflare.com, skip.ns.cloudflare.com). It was registered on 17 December 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.55.142 is hosted by Cloudflare, Inc. (AS13335). 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 34ms

Nameserver	IP addresses	PTR	ASN / ISP
heather.ns.cloudflare.com	—	—	—
skip.ns.cloudflare.com	—	—	—

🌍 A Records#

2 records 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.55.142	—	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.149.32	—	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 83ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:378e	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:9520	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 49ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.55.142,172.67.149.32 ech=AEX+DQBBiQAgACB6fwZmiM8HN6m0zArqRqb3a8Bz4w83oH5zMt0Ta81SRQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:378e,2606:4700:3034::ac43:9520

📝 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 2026-10-10 05:18:47

www	104.21.55.142 172.67.149.32 2606:4700:3032::6815:378e 2606:4700:3037::ac43:9520 (AS13335) (address records, no CNAME)
www vs bare domain	Same network c400.dk: 104.21.55.142 172.67.149.32 2606:4700:3032::6815:378e 2606:4700:3037::ac43:9520 (AS13335) www.c400.dk: 104.21.55.142 172.67.149.32 2606:4700:3032::6815:378e 2606:4700:3037::ac43:9520 (AS13335)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

100ms

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

🏷️ SOA#

73ms

Field	Value
Serial	2406024804
Primary NS (MNAME)	heather.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-01 01:54:09

Field	Value
Registrar	Obsidian Digital A/S
Registered	2020-12-17
Expires	2026-12-31 (73d)

📋 WHOIS#

⏱️ Lookup Timing#

34ms

35ms

AAAA

83ms

TXT

109ms

CAA

23ms

HTTPS

49ms

TLSA

43ms

SOA

73ms

MTA-STS

34ms

DNSSEC

100ms

SRV

0ms

Total

308ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 01:26:24	1483ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-28 00:33:56	517ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-08 15:27:04	1969ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-02 08:21:20	912ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-12 14:54:50	9682ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-16 18:46:28 shown	308ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-16 18:40:33	456ms	2 NS 2 A 0 MX	🔓 Insecure