frederik-skov.dk DNS records

🖥️ Nameservers2 records 56ms

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 93ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.215.36	3600s	webcluster2.webpod15-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records4 records 144ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	mx1.pub.mailpod12-cph3.one.com	104.37.34.246	mx1.pub.mailpod12-cph3.one.com	AS51468 One.com A/S
10	10800s	mx2.pub.mailpod12-cph3.one.com	104.37.34.247	mx2.pub.mailpod12-cph3.one.com	AS51468 One.com A/S
10	10800s	mx3.pub.mailpod12-cph3.one.com	104.37.34.248	mx3.pub.mailpod12-cph3.one.com	AS51468 One.com A/S
10	10800s	mx4.pub.mailpod12-cph3.one.com	104.37.34.249	mx4.pub.mailpod12-cph3.one.com	AS51468 One.com A/S

🔷 AAAA Records (IPv6)1 records 109ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10e:8023:2638:6e26:41bd	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 Records2 records 307ms

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

✉️ SPF

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (frederik-skov.dk)
-all (hard fail)	v=spf1 include:_custspf.one.com -all
~all (soft fail)	v=spf1 include:_custspf.one.com include:myspecialmailserver.example.com ~all

📨 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 191ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.pub.mailpod12-cph3.one.com	DANE-EE · SPKI · SHA-256	3E81C76D10E1A717F28178710EADCAA8…
SMTP _25._tcp.mx2.pub.mailpod12-cph3.one.com	DANE-EE · SPKI · SHA-256	3E81C76D10E1A717F28178710EADCAA8…
SMTP _25._tcp.mx3.pub.mailpod12-cph3.one.com	DANE-EE · SPKI · SHA-256	3E81C76D10E1A717F28178710EADCAA8…
SMTP _25._tcp.mx4.pub.mailpod12-cph3.one.com	DANE-EE · SPKI · SHA-256	3E81C76D10E1A717F28178710EADCAA8…

🔐 DNSSEC240ms

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

🏷️ SOA0ms

Field	Value
Serial	2026083001
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

56ms

A

93ms

MX

144ms

AAAA

109ms

TXT

307ms

CAA

143ms

HTTPS

137ms

TLSA

191ms

SOA

0ms

MTA-STS

169ms

DNSSEC

240ms

SRV

146ms

Total

1357ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 14:54:15	1357ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-29 10:58:28	2462ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-20 15:07:20	6152ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-01 15:19:01	9048ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-29 17:36:46	1986ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-26 22:37:00	669ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-25 10:19:47	552ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-24 07:10:26	927ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 23:42:03	1089ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-19 13:10:22	802ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-06-17 09:31:51	878ms	2 NS 1 A 4 MX	🔒 Secure	View