12c.dk DNS records

🖥️ Nameservers2 records 17ms

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 6ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.47.247.18	3600s	one.com.webforward.g1i.one	AS51468	One.com A/S	195.47.247.0/24	—	—

📧 MX Records4 records 6ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	mx2.mailpod15-cph3.g1i.one.com	104.37.35.37	mx2.mailpod15-cph3.g1i.one.com	AS51468 One.com A/S
10	10800s	mx1.mailpod15-cph3.g1i.one.com	104.37.35.36	mx1.mailpod15-cph3.g1i.one.com	AS51468 One.com A/S
10	10800s	mx4.mailpod15-cph3.g1i.one.com	104.37.35.39	mx4.mailpod15-cph3.g1i.one.com	AS51468 One.com A/S
10	10800s	mx3.mailpod15-cph3.g1i.one.com	104.37.35.38	mx3.mailpod15-cph3.g1i.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 37ms

TXT Record
MS=188AC1FB97FF05D08C63387E124EF3722FE95FE6

✉️ SPF

✗ No SPF record — mail spoofing not restricted

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 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 230ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.mailpod15-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	E54A7262DC6E3E0F06227A22B71D01DC…
SMTP _25._tcp.mx2.mailpod15-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	E54A7262DC6E3E0F06227A22B71D01DC…
SMTP _25._tcp.mx3.mailpod15-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	E54A7262DC6E3E0F06227A22B71D01DC…
SMTP _25._tcp.mx4.mailpod15-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	E54A7262DC6E3E0F06227A22B71D01DC…

🔐 DNSSEC120ms

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

Key type	Algorithm	Public key
KSK	ECDSA P-256/SHA-256	zt5cdWYuT1HdRLzY9IuxKKq0y1w1H6/7IMR7eLIy…
ZSK	ECDSA P-256/SHA-256	4MPKBAOeNaMJoUOfGpzZ6vBUiebdWzatv/L49YmA…

🏷️ SOA8ms

Field	Value
Serial	2026082401
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

17ms

A

6ms

MX

6ms

AAAA

26ms

TXT

37ms

CAA

6ms

HTTPS

25ms

TLSA

230ms

SOA

8ms

MTA-STS

7ms

DNSSEC

120ms

SRV

0ms

Total

883ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 19:14:10	883ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-26 17:13:19	1001ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-25 09:06:53	8530ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-17 14:03:52	5023ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-16 10:52:48	4277ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-24 16:58:40	994ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-25 15:06:44	635ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-19 02:15:17	2551ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-18 09:29:15	848ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-16 13:00:36	2329ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-16 12:58:22	1892ms	2 NS 1 A 4 MX	🔒 Secure	View