c2u.dk DNS records

🖥️ Nameservers2 records 31ms

Nameserver	IP addresses	PTR	ASN / ISP
eric.ns.cloudflare.com	108.162.193.112 172.64.33.112 173.245.59.112 2606:4700:58::adf5:3b70 2803:f800:50::6ca2:c170 2a06:98c1:50::ac40:2170	eric.ns.cloudflare.com eric.ns.cloudflare.com eric.ns.cloudflare.com eric.ns.cloudflare.com eric.ns.cloudflare.com eric.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
nena.ns.cloudflare.com	108.162.194.161 162.159.38.161 172.64.34.161 2606:4700:50::a29f:26a1 2803:f800:50::6ca2:c2a1 2a06:98c1:50::ac40:22a1	nena.ns.cloudflare.com nena.ns.cloudflare.com nena.ns.cloudflare.com nena.ns.cloudflare.com nena.ns.cloudflare.com nena.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.87.216	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.147.2	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records5 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	2a00:1450:4025:c01::1b 64.233.162.27	rd-in-f27.1e100.net li-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.211.26 2404:6800:4013:813::1a	lcbomp-in-f26.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt3.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1a	so-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt4.aspmx.l.google.com	172.253.158.26 2404:6800:4008:c01::1a	so-in-f26.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)2 records 31ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:57d8	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:9302	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 31ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.87.216,172.67.147.2 ech=AEX+DQBBvwAgACCg1cDftMt4SgABk5Igyu67EIXZFVLgmAHuWPZSwe66PAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:57d8,2606:4700:3033::ac43:9302

📝 TXT Records2 records 148ms

TXT Record
google-site-verification=HWfM0QzliDLntljIxacHEzU3xz8Q7IkfVmD8s-3ovAg
v=spf1 include:spf.surf-down.net include:_spf.google.com ~all

✉️ SPF

Policy	Record (c2u.dk)
~all (soft fail)	v=spf1 include:spf.surf-down.net include:_spf.google.com ~all

📨 DMARC

Policy	Record (_dmarc.c2u.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:913f537e5cd6344@rep.dmarcanalyzer.com; sp=none;

📬 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)

🔐 DNSSEC98ms

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	2413101757
Primary NS (MNAME)	eric.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

31ms

A

32ms

MX

35ms

AAAA

31ms

TXT

148ms

CAA

51ms

HTTPS

31ms

TLSA

81ms

SOA

0ms

MTA-STS

69ms

DNSSEC

98ms

SRV

54ms

Total

1465ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 11:23:59	1465ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-08-18 21:27:17	9462ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-08-17 13:41:48	3269ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-06-27 11:30:10	2451ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-06-27 07:15:48	1009ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-06-19 18:54:48	991ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-06-16 18:45:35	534ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-06-16 18:40:34	723ms	2 NS 2 A 5 MX	🔓 Insecure	View