o1sen.dk

📜 Historical scan 2026-09-25 21:42:39 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

o1sen.dk is a .dk domain served by 2 nameservers (cleo.ns.cloudflare.com, novalee.ns.cloudflare.com). It was registered on 24 December 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.84 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod9-cph3.one.com, mx2.pub.mailpod9-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 22ms

Nameserver	IP addresses	PTR	ASN / ISP
cleo.ns.cloudflare.com	108.162.193.89 172.64.33.89 173.245.59.89 2606:4700:58::adf5:3b59 2803:f800:50::6ca2:c159 2a06:98c1:50::ac40:2159	cleo.ns.cloudflare.com cleo.ns.cloudflare.com cleo.ns.cloudflare.com cleo.ns.cloudflare.com cleo.ns.cloudflare.com cleo.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
novalee.ns.cloudflare.com	108.162.194.182 162.159.38.182 172.64.34.182 2606:4700:50::a29f:26b6 2803:f800:50::6ca2:c2b6 2a06:98c1:50::ac40:22b6	novalee.ns.cloudflare.com novalee.ns.cloudflare.com novalee.ns.cloudflare.com novalee.ns.cloudflare.com novalee.ns.cloudflare.com novalee.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

1 records 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.215.84	300s	webcluster1.webpod16-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records#

4 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx1.pub.mailpod9-cph3.one.com	185.164.14.118	mx1.pub.mailpod9-cph3.one.com	AS51468 One.com A/S
10	300s	mx2.pub.mailpod9-cph3.one.com	185.164.14.119	mx2.pub.mailpod9-cph3.one.com	AS51468 One.com A/S
10	300s	mx3.pub.mailpod9-cph3.one.com	185.164.14.120	mx3.pub.mailpod9-cph3.one.com	AS51468 One.com A/S
10	300s	mx4.pub.mailpod9-cph3.one.com	185.164.14.124	mx4.pub.mailpod9-cph3.one.com	AS51468 One.com A/S

🔷 AAAA Records (IPv6)#

1 records 45ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:108:a3:dfaf:eac7:2fd9	300s	—	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 Records#

3 records 195ms

TXT Record
apple-domain=IScnPYmPy0jklQYQ
have-i-been-pwned-verification=9e5e7c528f3eea459d2a12c7fede2b14
v=spf1 include:_custspf.one.com include:_spf.google.com include:_spf.o1sen.dk include:icloud.com -all

✉️ SPF#

Policy	Record (o1sen.dk)
-all (hard fail)	v=spf1 include:_custspf.one.com include:_spf.google.com include:_spf.o1sen.dk include:icloud.com -all

📨 DMARC#

Policy	Record (_dmarc.o1sen.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:yg4rnl3t@ag.dmarcian-eu.com; ruf=mailto:yg4rnl3t@fr.dmarcian-eu.com; fo=1;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

Status	Report address (rua)
✓ Enabled	mailto:yg4rnl3t@tls.eu.dmarcian.com

📜 CAA Records#

11 records 34ms

Flags	Tag	Value
0	iodef	mailto:security@o1sen.dk
0	issue	comodoca.com
0	issue	digicert.com; cansignhttpexchanges=yes
0	issue	letsencrypt.org
0	issue	pki.goog; cansignhttpexchanges=yes
0	issue	ssl.com
0	issuewild	comodoca.com
0	issuewild	digicert.com; cansignhttpexchanges=yes
0	issuewild	letsencrypt.org
0	issuewild	pki.goog; cansignhttpexchanges=yes
0	issuewild	ssl.com

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-21 17:26:42

www	46.30.215.84 2a02:2350:5:108:a3:dfaf:eac7:2fd9 (AS51468) (address records, no CNAME)
www vs bare domain	Same network o1sen.dk: 46.30.215.84 2a02:2350:5:108:a3:dfaf:eac7:2fd9 (AS51468) www.o1sen.dk: 46.30.215.84 2a02:2350:5:108:a3:dfaf:eac7:2fd9 (AS51468)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 8/10 · policy: -all

warn 8 of the 10 allowed DNS lookups used: one more include can break SPF

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.o1sen.dk	Fneau_uBzHpTQ0x3x4Fs2_yA3pB63NsBS9nIlnwlfFk

🔗 TLSA / DANE#

8 records 92ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.pub.mailpod9-cph3.one.com	DANE-EE · SPKI · SHA-256	0FA6D8D3ECDA7F79ECCF336F77E0484A…
SMTP _25._tcp.mx1.pub.mailpod9-cph3.one.com	DANE-EE · SPKI · SHA-256	45270A69B37BD0C454F2B3E54CC89AD7…
SMTP _25._tcp.mx2.pub.mailpod9-cph3.one.com	DANE-EE · SPKI · SHA-256	0FA6D8D3ECDA7F79ECCF336F77E0484A…
SMTP _25._tcp.mx2.pub.mailpod9-cph3.one.com	DANE-EE · SPKI · SHA-256	45270A69B37BD0C454F2B3E54CC89AD7…
SMTP _25._tcp.mx3.pub.mailpod9-cph3.one.com	DANE-EE · SPKI · SHA-256	45270A69B37BD0C454F2B3E54CC89AD7…
SMTP _25._tcp.mx3.pub.mailpod9-cph3.one.com	DANE-EE · SPKI · SHA-256	0FA6D8D3ECDA7F79ECCF336F77E0484A…
SMTP _25._tcp.mx4.pub.mailpod9-cph3.one.com	DANE-EE · SPKI · SHA-256	0FA6D8D3ECDA7F79ECCF336F77E0484A…
SMTP _25._tcp.mx4.pub.mailpod9-cph3.one.com	DANE-EE · SPKI · SHA-256	45270A69B37BD0C454F2B3E54CC89AD7…

🔐 DNSSEC#

63ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2414012444
Primary NS (MNAME)	cleo.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-14 19:05:38

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-12-24
Expires	2026-12-31 (69d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

22ms

38ms

AAAA

45ms

TXT

195ms

CAA

34ms

HTTPS

31ms

TLSA

92ms

SOA

0ms

MTA-STS

71ms

DNSSEC

63ms

SRV

72ms

Total

860ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 17:26:42	627ms	2 NS 1 A 4 MX	🔒 Secure
2026-10-20 13:46:44	4425ms	2 NS 1 A 4 MX	🔒 Secure
2026-10-19 13:22:42	2771ms	2 NS 1 A 4 MX	🔒 Secure
2026-10-16 10:38:48	668ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-29 17:02:01	736ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-28 22:57:17	1099ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-26 22:01:20	1076ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-25 21:42:39 shown	860ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-10 21:09:20	2220ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-01 00:44:37	1902ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-30 21:02:02	1300ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-19 21:19:20	1467ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-16 06:55:42	5453ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-12 13:51:21	9349ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-01 19:46:48	1269ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-19 10:46:33	1306ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-30 18:16:48	1696ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-17 19:44:10	1250ms	2 NS 1 A 4 MX	🔒 Secure