on-z.dk

📜 Historical scan 2026-06-24 22:13:11 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

on-z.dk is a .dk domain served by 2 nameservers (ns.scannet2.dk, ns2.scannet2.dk). It was registered on 28 April 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.190 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mail.on-z.dk. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 31ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.scannet2.dk	185.25.141.9 2a02:2339:4006:10d::4171:4171	ns1.scannet.dk ns1.scannet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.scannet2.dk	2a02:2339:1:112:0:5:1:b11 91.197.248.72	ns2.scannet.dk ns2.scannet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.190	3600s	demandmedia.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 125ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mail.on-z.dk	185.21.41.190	demandmedia.dk	AS48854 team.blue Denmark A/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 176ms

TXT Record
v=spf1 a mx ptr a:mailsender.zeltek.dk a:demandmedia.dk ip4:77.243.132.5 ip4:77.243.132.6 ip4:77.243.132.7 ip4:77.243.132.8 ip4:77.243.132.9 ip4:77.243.132.10 ~all

✉️ SPF#

Policy	Record (on-z.dk)
~all (soft fail)	v=spf1 a mx ptr a:mailsender.zeltek.dk a:demandmedia.dk ip4:77.243.132.5 ip4:77.243.132.6 ip4:77.243.132.7 ip4:77.243.132.8 ip4:77.243.132.9 ip4:77.243.132.10 ~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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 20:07:35

www	93.191.155.240 (AS48854) (address records, no CNAME)
www vs bare domain	Same network on-z.dk: 185.21.41.190 (AS48854) www.on-z.dk: 93.191.155.240 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	RSA · ~1024 bit below 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: 5/10 · policy: ~all

warn "ptr" is slow, unreliable and discouraged (RFC 7208 §5.5)

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

82ms

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

🏷️ SOA#

28ms

Field	Value
Serial	2007010800
Primary NS (MNAME)	ns.scannet2.dk
Responsible (RNAME)	hostmaster@scannet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-06 06:54:30

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2005-04-28
Expires	2027-04-30 (187d)

📋 WHOIS#

⏱️ Lookup Timing#

31ms

44ms

125ms

AAAA

43ms

TXT

176ms

CAA

43ms

HTTPS

71ms

TLSA

100ms

SOA

28ms

MTA-STS

84ms

DNSSEC

82ms

SRV

94ms

Total

618ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 16:28:51	313ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-27 03:37:20	777ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 22:13:11 shown	618ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 17:30:30	529ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 03:44:31	675ms	2 NS 1 A 1 MX	🔒 Secure