letzonline.dk DNS records

🖥️ Nameservers2 records 94ms

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 58ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
162.159.134.42	3600s	—	AS13335	Cloudflare, Inc.	162.159.128.0/19	🇺🇸 United States	—

📧 MX Records4 records 69ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	10800s	mx1.pub.mailpod10-cph3.one.com	104.37.34.70	mx1.pub.mailpod10-cph3.one.com	AS51468 One.com A/S
10	10800s	mx2.pub.mailpod10-cph3.one.com	104.37.34.71	mx2.pub.mailpod10-cph3.one.com	AS51468 One.com A/S
10	10800s	mx3.pub.mailpod10-cph3.one.com	104.37.34.72	mx3.pub.mailpod10-cph3.one.com	AS51468 One.com A/S
10	10800s	mx4.pub.mailpod10-cph3.one.com	104.37.34.73	mx4.pub.mailpod10-cph3.one.com	AS51468 One.com A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	162.159.134.42
🔶 Autoconfig	162.159.134.42

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 487ms

TXT Record
ca3-a79e4434797547e2b6a8730aa71574c6
ca3-f3e1b2c2b66d4e57b58bfe9212887ad8
v=spf1 a mx include:_custspf.one.com include:relay.kinstamailservice.com ~all

✉️ SPF

Policy	Record (letzonline.dk)
~all (soft fail)	v=spf1 a mx include:_custspf.one.com include:relay.kinstamailservice.com ~all

📨 DMARC

Policy	Record (_dmarc.letzonline.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.letzonline.dk	letzonline.dk.kinstavalidation.app

🔗 TLSA / DANE4 records 150ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.pub.mailpod10-cph3.one.com	DANE-EE · SPKI · SHA-256	5932F73E86E0548B77B582F47919F654…
SMTP _25._tcp.mx2.pub.mailpod10-cph3.one.com	DANE-EE · SPKI · SHA-256	5932F73E86E0548B77B582F47919F654…
SMTP _25._tcp.mx3.pub.mailpod10-cph3.one.com	DANE-EE · SPKI · SHA-256	5932F73E86E0548B77B582F47919F654…
SMTP _25._tcp.mx4.pub.mailpod10-cph3.one.com	DANE-EE · SPKI · SHA-256	5932F73E86E0548B77B582F47919F654…

🔐 DNSSEC260ms

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

🏷️ SOA0ms

Field	Value
Serial	2026083103
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

94ms

A

58ms

MX

69ms

AAAA

120ms

TXT

487ms

CAA

83ms

HTTPS

83ms

TLSA

150ms

SOA

0ms

MTA-STS

179ms

DNSSEC

260ms

SRV

193ms

Total

1421ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 19:44:42	1421ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-30 09:47:01	1520ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-29 01:34:30	653ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-27 23:29:52	902ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-27 14:18:02	713ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-26 14:11:41	1503ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-25 08:04:50	2414ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-24 07:28:52	3635ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-23 01:19:31	8901ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-22 01:08:24	8830ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-21 00:39:52	2166ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-20 00:07:36	9139ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-18 23:00:05	3123ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-16 22:04:09	1132ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-13 23:26:00	1207ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-12 13:49:49	2546ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-11 06:49:12	5379ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-09 22:04:11	1225ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-08-02 17:14:11	1047ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-29 16:22:58	944ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-27 10:56:39	1035ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-26 10:30:31	8761ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-25 10:05:08	1265ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-24 09:34:41	987ms	2 NS 1 A 4 MX	🔒 Secure	View
2026-07-23 08:51:32	917ms	2 NS 1 A 4 MX	🔒 Secure	View