certen.dk DNS records

🖥️ Nameservers2 records 49ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records1 records 50ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.215.191	3600s	webforward.webpod17-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records4 records 52ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	mx1.pub.mailpod14-cph3.one.com	185.10.9.212	mx1.pub.mailpod14-cph3.one.com	AS51468 One.com A/S
10	10800s	mx2.pub.mailpod14-cph3.one.com	185.10.9.213	mx2.pub.mailpod14-cph3.one.com	AS51468 One.com A/S
10	10800s	mx3.pub.mailpod14-cph3.one.com	185.10.9.214	mx3.pub.mailpod14-cph3.one.com	AS51468 One.com A/S
10	10800s	mx4.pub.mailpod14-cph3.one.com	185.10.9.215	mx4.pub.mailpod14-cph3.one.com	AS51468 One.com A/S

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 273ms

TXT Record
v=spf1 -all

✉️ SPF

Policy	Record (certen.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC

Policy	Record (_dmarc.certen.dk)
p=reject	v=DMARC1;p=reject;sp=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 / DANE4 records 94ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.pub.mailpod14-cph3.one.com	DANE-EE · SPKI · SHA-256	A4B9A2A35B513EFAC91F5A3C11DD0C58…
SMTP _25._tcp.mx2.pub.mailpod14-cph3.one.com	DANE-EE · SPKI · SHA-256	A4B9A2A35B513EFAC91F5A3C11DD0C58…
SMTP _25._tcp.mx3.pub.mailpod14-cph3.one.com	DANE-EE · SPKI · SHA-256	A4B9A2A35B513EFAC91F5A3C11DD0C58…
SMTP _25._tcp.mx4.pub.mailpod14-cph3.one.com	DANE-EE · SPKI · SHA-256	A4B9A2A35B513EFAC91F5A3C11DD0C58…

🔐 DNSSEC167ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA0ms

Field	Value
Serial	2026080602
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

49ms

A

50ms

MX

52ms

AAAA

46ms

TXT

273ms

CAA

33ms

HTTPS

57ms

TLSA

94ms

SOA

0ms

MTA-STS

199ms

DNSSEC

167ms

SRV

115ms

Total

1102ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 08:29:08	1102ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-26 00:23:22	860ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-09 04:19:54	1162ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-28 17:27:34	1555ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-25 03:43:50	3215ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-23 03:54:27	1106ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 00:48:02	955ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 01:06:17	566ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-20 23:47:41	1122ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-20 18:51:27	919ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 20:10:23	2675ms	2 NS 1 A 4 MX	🔒 Secure	View