z21.dk
📜 Historical scan 2026-06-17 12:56:36  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   185ms
NameserverIP addressesPTRASN / 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   109ms
IPTTLPTRASNISP / OrgCIDRCountryCity
46.30.213.191 — webforward.webpod14-cph3.one.com AS51468 One.com A/S 46.30.208.0/21 🇩🇰 Denmark Copenhagen
📧 MX Records4 records   161ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mx1.pub.mailpod9-cph3.one.com 185.164.14.118 mx1.pub.mailpod9-cph3.one.com AS51468 One.com A/S
10 — mx2.pub.mailpod9-cph3.one.com 185.164.14.119 mx2.pub.mailpod9-cph3.one.com AS51468 One.com A/S
10 — mx3.pub.mailpod9-cph3.one.com 185.164.14.120 mx3.pub.mailpod9-cph3.one.com AS51468 One.com A/S
10 — mx4.pub.mailpod9-cph3.one.com 185.164.14.124 mx4.pub.mailpod9-cph3.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   4305ms
TXT Record
v=spf1 a mx include:mailmailmail.net include:_custspf.one.com -all
✉️ SPF
PolicyRecord (z21.dk)
-all (hard fail) v=spf1 a mx include:mailmailmail.net include:_custspf.one.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   277ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx1.pub.mailpod9-cph3.one.com DANE-EE · SPKI · SHA-256 5D2162F5CED0ACD2C3D63E5582045A6C…
SMTP _25._tcp.mx2.pub.mailpod9-cph3.one.com DANE-EE · SPKI · SHA-256 5D2162F5CED0ACD2C3D63E5582045A6C…
SMTP _25._tcp.mx3.pub.mailpod9-cph3.one.com DANE-EE · SPKI · SHA-256 5D2162F5CED0ACD2C3D63E5582045A6C…
SMTP _25._tcp.mx4.pub.mailpod9-cph3.one.com DANE-EE · SPKI · SHA-256 5D2162F5CED0ACD2C3D63E5582045A6C…
🔐 DNSSEC324ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA197ms
FieldValue
Serial2026060501
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
185ms
A
109ms
MX
161ms
AAAA
75ms
TXT
4305ms
CAA
244ms
HTTPS
2058ms
TLSA
277ms
SOA
197ms
MTA-STS
106ms
DNSSEC
324ms
SRV
0ms
Total
6448ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-28 05:02:52 2601ms 2 NS 1 A 4 MX 🔒 Secure View
2026-08-27 00:40:13 2545ms 2 NS 1 A 4 MX 🔒 Secure View
2026-08-21 23:45:05 8821ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-27 19:28:41 689ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-17 12:56:36 6448ms 2 NS 1 A 4 MX 🔒 Secure View
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