c16k.dk DNS records

🖥️ Nameservers2 records 231ms

Nameserver	IP addresses	PTR	ASN / ISP
ivan.ns.cloudflare.com	108.162.193.120 172.64.33.120 173.245.59.120 2606:4700:58::adf5:3b78 2803:f800:50::6ca2:c178 2a06:98c1:50::ac40:2178	ivan.ns.cloudflare.com ivan.ns.cloudflare.com ivan.ns.cloudflare.com ivan.ns.cloudflare.com ivan.ns.cloudflare.com ivan.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
ruth.ns.cloudflare.com	108.162.192.143 172.64.32.143 173.245.58.143 2606:4700:50::adf5:3a8f 2803:f800:50::6ca2:c08f 2a06:98c1:50::ac40:208f	ruth.ns.cloudflare.com ruth.ns.cloudflare.com ruth.ns.cloudflare.com ruth.ns.cloudflare.com ruth.ns.cloudflare.com ruth.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 245ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.4.170	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.132.73	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 212ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.c16k.dk	185.62.188.4	cpanel.blazingfast.io	AS47674 Net Solutions - Consultoria Em Tecnologias De Informacao, Sociedade Unipessoal LDA

🔷 AAAA Records (IPv6)2 records 236ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:4aa	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:8449	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 275ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.4.170,172.67.132.73 ech=AEX+DQBBUAAgACB5yo1uHPYFnhyeEH0/VQFJMCBy7AUPLw737f6vCcgyYAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:4aa,2606:4700:3037::ac43:8449

📝 TXT Records1 records 502ms

TXT Record
v=spf1 +mx +a +ip4:185.62.188.4 ~all

✉️ SPF

Policy	Record (c16k.dk)
~all (soft fail)	v=spf1 +mx +a +ip4:185.62.188.4 ~all

📨 DMARC

Policy	Record (_dmarc.c16k.dk)
p=reject	v=DMARC1; p=reject; adkim=s; aspf=s;

📬 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 / DANE

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

🔐 DNSSEC379ms

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

🏷️ SOA0ms

Field	Value
Serial	2412555598
Primary NS (MNAME)	ivan.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

231ms

A

245ms

MX

212ms

AAAA

236ms

TXT

502ms

CAA

214ms

HTTPS

275ms

TLSA

295ms

SOA

0ms

MTA-STS

296ms

DNSSEC

379ms

SRV

276ms

Total

4874ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-19 05:54:50	4874ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-16 22:36:13	1893ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-28 20:50:21	924ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-21 04:00:25	1019ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-19 14:26:44	3636ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-18 11:39:09	1289ms	2 NS 2 A 1 MX	⚠️ Bogus	View
2026-06-16 18:41:53	617ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-16 18:41:10	2659ms	2 NS 2 A 1 MX	🔓 Insecure	View