oh-c.dk DNS records

🖥️ Nameservers2 records 28ms

Nameserver	IP addresses	PTR	ASN / ISP
ashton.ns.cloudflare.com	108.162.195.173 162.159.44.173 172.64.35.173 2606:4700:58::a29f:2cad 2803:f800:50::6ca2:c3ad 2a06:98c1:50::ac40:23ad	ashton.ns.cloudflare.com ashton.ns.cloudflare.com ashton.ns.cloudflare.com ashton.ns.cloudflare.com ashton.ns.cloudflare.com ashton.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
marjory.ns.cloudflare.com	108.162.192.193 172.64.32.193 173.245.58.193 2606:4700:50::adf5:3ac1 2803:f800:50::6ca2:c0c1 2a06:98c1:50::ac40:20c1	marjory.ns.cloudflare.com marjory.ns.cloudflare.com marjory.ns.cloudflare.com marjory.ns.cloudflare.com marjory.ns.cloudflare.com marjory.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 32ms

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

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	78.31.255.117
🔶 Autoconfig	78.31.255.117

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 153ms

TXT Record
google-site-verification=ScVtMQ322cRhQ_jygMi4n9Vfk0ROoThyL8PKfix2aMY
protonmail-verification=07fbbde19eb5661170e6a7e9257653155d3ee688
v=spf1 include:_spf.protonmail.ch ~all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.oh-c.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 Records11 records 31ms

Flags	Tag	Value
0	iodef	ole@oh-c.dk
0	issue	comodoca.com
0	issue	digicert.com; cansignhttpexchanges=yes
0	issue	letsencrypt.org
0	issue	pki.goog; cansignhttpexchanges=yes
0	issue	ssl.com
0	issuewild	comodoca.com
0	issuewild	digicert.com; cansignhttpexchanges=yes
0	issuewild	letsencrypt.org
0	issuewild	pki.goog; cansignhttpexchanges=yes
0	issuewild	ssl.com

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.oh-c.dk	IiHkTYvJBeRfLVn1WlSHjShy7WUsCzfk5uyyhDlHrbc
TXT	_acme-challenge.oh-c.dk	jb7GKN91R-RFBHVlgugmAYAu9oW3c4mGVLADqMPBE6Q

🔗 TLSA / DANE4 records 101ms

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

🔐 DNSSEC106ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA0ms

Field	Value
Serial	2413531245
Primary NS (MNAME)	ashton.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

28ms

A

37ms

MX

32ms

AAAA

30ms

TXT

153ms

CAA

31ms

HTTPS

26ms

TLSA

101ms

SOA

0ms

MTA-STS

47ms

DNSSEC

106ms

SRV

52ms

Total

865ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 04:40:37	865ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-08-22 10:23:36	2123ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-08-16 14:00:41	1548ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-07-22 13:41:56	8964ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-07-02 19:27:41	31779ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-06-25 18:04:37	908ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-06-18 08:41:06	1292ms	2 NS 0 A 2 MX	🔒 Secure	View