cotu.dk DNS records

🖥️ Nameservers2 records 184ms

Nameserver	IP addresses	PTR	ASN / ISP
daisy.ns.cloudflare.com	108.162.192.90 172.64.32.90 173.245.58.90 2606:4700:50::adf5:3a5a 2803:f800:50::6ca2:c05a 2a06:98c1:50::ac40:205a	daisy.ns.cloudflare.com daisy.ns.cloudflare.com daisy.ns.cloudflare.com daisy.ns.cloudflare.com daisy.ns.cloudflare.com daisy.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
lloyd.ns.cloudflare.com	108.162.193.197 172.64.33.197 173.245.59.197 2606:4700:58::adf5:3bc5 2803:f800:50::6ca2:c1c5 2a06:98c1:50::ac40:21c5	lloyd.ns.cloudflare.com lloyd.ns.cloudflare.com lloyd.ns.cloudflare.com lloyd.ns.cloudflare.com lloyd.ns.cloudflare.com lloyd.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records

🌍

No A records found

📧 MX Records2 records 177ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.protonmail.ch	176.119.200.128 185.205.70.128 185.70.42.128	mail.protonmail.ch mail.protonmail.ch mail.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG
20	300s	mailsec.protonmail.ch	176.119.200.129 185.205.70.129 185.70.42.129	mailsec.protonmail.ch mailsec.protonmail.ch mailsec.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 343ms

TXT Record
protonmail-verification=67547a7ad9619b89f17931692b7d123f7cece240
v=spf1 include:_spf.protonmail.ch ~all

✉️ SPF

Policy	Record (cotu.dk)
~all (soft fail)	v=spf1 include:_spf.protonmail.ch ~all

📨 DMARC

Policy	Record (_dmarc.cotu.dk)
p=quarantine	v=DMARC1; p=quarantine

📬 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 / DANE4 records 1358ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…

🔐 DNSSEC267ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA0ms

Field	Value
Serial	2411366863
Primary NS (MNAME)	daisy.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

184ms

A

197ms

MX

177ms

AAAA

178ms

TXT

343ms

CAA

186ms

HTTPS

193ms

TLSA

1358ms

SOA

0ms

MTA-STS

221ms

DNSSEC

267ms

SRV

205ms

Total

3287ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 02:05:17	1677ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-08-25 02:10:06	1104ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-08-23 22:53:19	4055ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-08-22 21:51:33	3503ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-08-21 21:46:32	1729ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-08-16 18:37:50	17150ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-08-13 01:17:40	4005ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-08-11 14:44:14	4109ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-08-10 00:58:41	3604ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-08-08 08:23:46	17128ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-08-07 07:18:50	3287ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-07-27 01:01:46	9698ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-07-26 00:57:58	10637ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-07-21 18:20:22	9283ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-07-19 07:13:29	10044ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-07-18 04:05:38	4876ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-07-15 23:29:42	9245ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-07-13 16:56:19	10286ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-07-03 00:37:46	1486ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-06-24 18:39:57	684ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-06-22 19:03:58	1089ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 01:34:42	689ms	2 NS 0 A 2 MX	🔓 Insecure	View
2026-06-16 22:36:22	561ms	2 NS 0 A 2 MX	🔓 Insecure	View