c6.dk DNS records

🖥️ Nameservers2 records 40ms

Nameserver	IP addresses	PTR	ASN / ISP
brad.ns.cloudflare.com	—	—	—
gail.ns.cloudflare.com	—	—	—

🌍 A Records2 records 48ms

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

📧 MX Records3 records 45ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
30	—	route2.mx.cloudflare.net	162.159.205.17 162.159.205.18 162.159.205.19	route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
41	—	route3.mx.cloudflare.net	162.159.205.23 162.159.205.24 162.159.205.25	route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
99	—	route1.mx.cloudflare.net	162.159.205.11 162.159.205.12 162.159.205.13	route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🔷 AAAA Records (IPv6)2 records 51ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:b00e	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000::/42	—	—
2606:4700:3032::6815:4841	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000::/42	—	—

🔐 HTTPS Records1 records 50ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.72.65,172.67.176.14 ech=AEX+DQBBiQAgACB6fwZmiM8HN6m0zArqRqb3a8Bz4w83oH5zMt0Ta81SRQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:b00e,2606:4700:3032::6815:4841

📝 TXT Records2 records 106ms

TXT Record
google-site-verification=sRK1rz_ygidT96Qvvh4jwlLRM7da0Z03RCg6oo-CQVY
v=spf1 include:_spf.mx.cloudflare.net ~all

✉️ SPF

Policy	Record (c6.dk)
~all (soft fail)	v=spf1 include:_spf.mx.cloudflare.net ~all

📨 DMARC

Policy	Record (_dmarc.c6.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:ee7844cf43ba4ce8ab2b3993db1bae18@dmarc-reports.cloudflare.net

📬 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

🔗 TLSA / DANE9 records 60ms

Service / Owner	Type	Cert association
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…

🔐 DNSSEC144ms

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

🏷️ SOA44ms

Field	Value
Serial	2404022718
Primary NS (MNAME)	brad.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

40ms

A

48ms

MX

45ms

AAAA

51ms

TXT

106ms

CAA

45ms

HTTPS

50ms

TLSA

60ms

SOA

44ms

MTA-STS

35ms

DNSSEC

144ms

SRV

0ms

Total

979ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 03:57:03	1415ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-11 02:39:08	7349ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-08-02 16:02:38	10626ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-20 13:09:39	10527ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-07-11 04:45:02	2705ms	2 NS 2 A 3 MX	❓ Unknown	View
2026-06-26 16:49:02	1240ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-25 08:28:16	3256ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-24 09:42:53	1064ms	2 NS 2 A 3 MX	❓ Unknown	View
2026-06-20 16:32:24	2027ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-16 18:40:46	979ms	2 NS 2 A 3 MX	🔓 Insecure	View
2026-06-16 18:40:32	777ms	2 NS 2 A 3 MX	🔓 Insecure	View