c-o.dk DNS records

🖥️ Nameservers2 records 76ms

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 56ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.120	3600s	webcluster2.webpod13-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records4 records 69ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	mx1.mailpod16-cph3.g1i.one.com	5.249.232.33	mx1.mailpod16-cph3.g1i.one.com	AS51468 One.com A/S
10	10800s	mx2.mailpod16-cph3.g1i.one.com	5.249.232.34	mx2.mailpod16-cph3.g1i.one.com	AS51468 One.com A/S
10	10800s	mx3.mailpod16-cph3.g1i.one.com	5.249.232.35	mx3.mailpod16-cph3.g1i.one.com	AS51468 One.com A/S
10	10800s	mx4.mailpod16-cph3.g1i.one.com	5.249.232.36	mx4.mailpod16-cph3.g1i.one.com	AS51468 One.com A/S

🔷 AAAA Records (IPv6)1 records 85ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10b:80c3:d809:7796:b632	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 194ms

TXT Record
v=spf1 include:_custspf.one.com ~all

✉️ SPF

Policy	Record (c-o.dk)
~all (soft fail)	v=spf1 include:_custspf.one.com ~all

📨 DMARC

Policy	Record (_dmarc.c-o.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:c-o@c-o.dk

📬 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 144ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.mailpod16-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	24689A1B29BE70163B6DCF262497B6EC…
SMTP _25._tcp.mx2.mailpod16-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	24689A1B29BE70163B6DCF262497B6EC…
SMTP _25._tcp.mx3.mailpod16-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	24689A1B29BE70163B6DCF262497B6EC…
SMTP _25._tcp.mx4.mailpod16-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	24689A1B29BE70163B6DCF262497B6EC…

🔐 DNSSEC129ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082102
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

76ms

A

56ms

MX

69ms

AAAA

85ms

TXT

194ms

CAA

82ms

HTTPS

52ms

TLSA

144ms

SOA

0ms

MTA-STS

92ms

DNSSEC

129ms

SRV

80ms

Total

908ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 13:03:32	908ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-21 22:16:17	1605ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-19 21:35:19	3498ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-06 08:56:20	2437ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-13 13:36:22	907ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-08 15:13:34	1113ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-04 19:19:57	9854ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-03 00:56:13	2628ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-24 22:08:35	625ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-20 22:51:44	568ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-20 19:49:10	1153ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-19 12:50:03	937ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-16 18:45:13	793ms	2 NS 1 A 4 MX	⚠️ Bogus	View
2026-06-16 18:40:24	762ms	2 NS 1 A 4 MX	🔒 Secure	View