1921.dk
📜 Historical scan 2026-06-16 12:45:40  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   53ms
NameserverIP addressesPTRASN / ISP
ns01.one.com — — —
ns02.one.com — — —
🌍 A Records1 records   55ms
IPTTLPTRASNISP / OrgCIDRCountryCity
46.30.213.32 — webcluster2.webpod12-cph3.one.com AS51468 One.com A/S 46.30.208.0/21 🇩🇰 Denmark —
📧 MX Records4 records   56ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mx1.pub.mailpod10-cph3.one.com 104.37.34.70 mx1.pub.mailpod10-cph3.one.com AS51468 One.com A/S
10 — mx2.pub.mailpod10-cph3.one.com 104.37.34.71 mx2.pub.mailpod10-cph3.one.com AS51468 One.com A/S
10 — mx3.pub.mailpod10-cph3.one.com 104.37.34.72 mx3.pub.mailpod10-cph3.one.com AS51468 One.com A/S
10 — mx4.pub.mailpod10-cph3.one.com 104.37.34.73 mx4.pub.mailpod10-cph3.one.com AS51468 One.com A/S
🔷 AAAA Records (IPv6)1 records   53ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a02:2350:5:10a:8005:a7f2:8add:a32e — — AS51468 One.com A/S 2a02:2350::/32 🇩🇰 Denmark Copenhagen
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records
📝
No TXT records found
✉️ SPF
✗ No SPF record — mail spoofing not restricted
📨 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   58ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx1.pub.mailpod10-cph3.one.com DANE-EE · SPKI · SHA-256 411611ECE6466645A9E53512398A692D…
SMTP _25._tcp.mx2.pub.mailpod10-cph3.one.com DANE-EE · SPKI · SHA-256 411611ECE6466645A9E53512398A692D…
SMTP _25._tcp.mx3.pub.mailpod10-cph3.one.com DANE-EE · SPKI · SHA-256 411611ECE6466645A9E53512398A692D…
SMTP _25._tcp.mx4.pub.mailpod10-cph3.one.com DANE-EE · SPKI · SHA-256 411611ECE6466645A9E53512398A692D…
🔐 DNSSEC177ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA51ms
FieldValue
Serial2026052401
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
53ms
A
55ms
MX
56ms
AAAA
53ms
TXT
184ms
CAA
55ms
HTTPS
56ms
TLSA
58ms
SOA
51ms
MTA-STS
125ms
DNSSEC
177ms
SRV
0ms
Total
869ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 12:27:33 1165ms 2 NS 1 A 4 MX 🔒 Secure View
2026-08-14 03:52:48 5204ms 2 NS 1 A 4 MX 🔒 Secure View
2026-07-25 07:19:32 8767ms 2 NS 1 A 4 MX 🔒 Secure View
2026-07-04 21:11:38 995ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-27 04:19:38 2587ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-24 17:43:02 674ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-16 12:45:40 869ms 2 NS 1 A 4 MX 🔒 Secure View
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