4th.dk
📜 Historical scan 2026-06-16 12:50:54  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   55ms
NameserverIP addressesPTRASN / ISP
ns01.one.com — — —
ns02.one.com — — —
🌍 A Records1 records   48ms
IPTTLPTRASNISP / OrgCIDRCountryCity
195.47.247.18 — one.com.webforward.g1i.one AS51468 One.com A/S 195.47.247.0/24 — —
📧 MX Records4 records   55ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mx1.mailpod15-cph3.g1i.one.com 104.37.35.36 mx1.mailpod15-cph3.g1i.one.com AS51468 One.com A/S
10 — mx2.mailpod15-cph3.g1i.one.com 104.37.35.37 mx2.mailpod15-cph3.g1i.one.com AS51468 One.com A/S
10 — mx3.mailpod15-cph3.g1i.one.com 104.37.35.38 mx3.mailpod15-cph3.g1i.one.com AS51468 One.com A/S
10 — mx4.mailpod15-cph3.g1i.one.com 104.37.35.39 mx4.mailpod15-cph3.g1i.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 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   125ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx1.mailpod15-cph3.g1i.one.com DANE-EE · SPKI · SHA-256 DB00CDA1DB82CC93CBF96D7D5806F329…
SMTP _25._tcp.mx2.mailpod15-cph3.g1i.one.com DANE-EE · SPKI · SHA-256 DB00CDA1DB82CC93CBF96D7D5806F329…
SMTP _25._tcp.mx3.mailpod15-cph3.g1i.one.com DANE-EE · SPKI · SHA-256 DB00CDA1DB82CC93CBF96D7D5806F329…
SMTP _25._tcp.mx4.mailpod15-cph3.g1i.one.com DANE-EE · SPKI · SHA-256 DB00CDA1DB82CC93CBF96D7D5806F329…
🔐 DNSSEC179ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA145ms
FieldValue
Serial2026061401
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
55ms
A
48ms
MX
55ms
AAAA
138ms
TXT
316ms
CAA
43ms
HTTPS
60ms
TLSA
125ms
SOA
145ms
MTA-STS
72ms
DNSSEC
179ms
SRV
0ms
Total
2311ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-17 11:35:40 3812ms 2 NS 1 A 4 MX 🔒 Secure View
2026-08-16 10:01:50 904ms 2 NS 1 A 4 MX 🔒 Secure View
2026-08-14 22:21:04 980ms 2 NS 1 A 4 MX 🔒 Secure View
2026-07-15 10:19:45 854ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-29 16:59:21 726ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-26 02:45:46 735ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-25 06:09:10 2537ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-20 15:19:46 2454ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-19 05:58:22 969ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-18 10:13:43 4654ms 2 NS 1 A 4 MX 🔒 Secure View
2026-06-16 12:50:54 2311ms 2 NS 1 A 4 MX 🔒 Secure View
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