a2app.dk
Last scanned: 2026-08-25 01:41:25  ·  8958ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   111ms
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   119ms
IPTTLPTRASNISP / OrgCIDRCountryCity
20.79.107.1 3600s — AS8075 Microsoft Corporation 20.64.0.0/10 🇩🇪 Germany Frankfurt am Main
📧 MX Records1 records   123ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover20.79.107.1
🔶 Autoconfig20.79.107.1
🔷 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 / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC329ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026082401
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
111ms
A
119ms
MX
123ms
AAAA
122ms
TXT
444ms
CAA
115ms
HTTPS
127ms
TLSA
116ms
SOA
0ms
MTA-STS
163ms
DNSSEC
329ms
SRV
8077ms
Total
8958ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-25 01:41:25 8958ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-25 08:11:13 8489ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-01 08:12:24 511ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-25 09:27:14 779ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-20 00:15:16 5598ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-19 23:14:31 531ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-16 12:48:30 896ms 2 NS 1 A 4 MX 🔒 Secure View
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