o3.dk
Last scanned: 2026-08-28 01:25:42  ·  551ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   26ms
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   24ms
IPTTLPTRASNISP / OrgCIDRCountryCity
193.84.27.126 4800s driften2.bellcom.dk AS3292 TDC Holding A/S 193.84.27.0/24 🇩🇰 Denmark —
📧 MX Records1 records   23ms
PriorityTTLMail ServerIP addressesPTRASN
10 600s sogo.bellcom.dk 178.105.153.42 sogo.bellcom.dk AS24940 Hetzner Online GmbH
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover193.84.27.119
🔶 Autoconfig193.84.27.119
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   129ms
TXT Record
mail.o3.dk
o3.dk
✉️ 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 / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC95ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026082701
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
26ms
A
24ms
MX
23ms
AAAA
27ms
TXT
129ms
CAA
24ms
HTTPS
30ms
TLSA
117ms
SOA
0ms
MTA-STS
52ms
DNSSEC
95ms
SRV
50ms
Total
551ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-28 01:25:42 551ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-08 05:57:37 4960ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-17 22:36:39 840ms 2 NS 1 A 1 MX 🔒 Secure View
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