sieber.dk DNS records

🖥️ Nameservers2 records 36ms

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
46.30.211.38	600s	domain-parking.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records4 records 59ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
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	mx2.mailpod15-cph3.g1i.one.com	104.37.35.37	mx2.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
10	10800s	mx4.mailpod15-cph3.g1i.one.com	104.37.35.39	mx4.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 172ms

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

✉️ SPF

Policy	Record (sieber.dk)
-all (hard fail)	v=spf1 include:_custspf.one.com -all

📨 DMARC

Policy	Record (_dmarc.sieber.dk)
p=reject	v=DMARC1;p=reject;rua=mailto:cc34cbc2b8@rua.easydmarc.eu;ruf=mailto:cc34cbc2b8@ruf.easydmarc.eu;fo=1;

📬 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.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…

🔐 DNSSEC137ms

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

🏷️ SOA0ms

Field	Value
Serial	2026091301
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

36ms

A

56ms

MX

59ms

AAAA

35ms

TXT

172ms

CAA

53ms

HTTPS

41ms

TLSA

94ms

SOA

0ms

MTA-STS

69ms

DNSSEC

137ms

SRV

66ms

Total

936ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-14 02:36:11	936ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-09-10 22:01:15	1000ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-09-03 19:46:19	525ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-15 02:36:55	4820ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-25 16:50:50	625ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-23 19:19:11	930ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-22 01:05:56	1070ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 12:57:53	2531ms	2 NS 1 A 4 MX	🔒 Secure	View