1stc.dk
Last scanned: 2026-08-27 09:56:56  ·  1216ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   71ms
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 Records
🌍
No A records found
📧 MX Records1 records   58ms
PriorityTTLMail ServerIP addressesPTRASN
0 3600s 1stc-dk.mail.protection.outlook.com 2a01:111:f403:ca04::8
2a01:111:f403:ca04::e
2a01:111:f403:ca09::28
2a01:111:f403:ca09::5
52.101.68.12
52.101.68.27
52.101.68.3
52.101.73.11		 mail-db5pr02cu00100.inbound.protection.outlook.com
mail-db8pr02cu00106.inbound.protection.outlook.com
mail-am6pr02cu00300.inbound.protection.outlook.com
mail-am1pr04cu00105.inbound.protection.outlook.com
mail-db9pr02cu00204.inbound.protection.outlook.com
mail-db7pr03cu00503.inbound.protection.outlook.com
mail-db7pr03cu00403.inbound.protection.outlook.com
mail-am1pr04cu00103.inbound.protection.outlook.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
🔷 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)
🔐 DNSSEC149ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsresolution failed: ncache nxrrset
🏷️ SOA0ms
FieldValue
Serial2026080601
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
71ms
A
52ms
MX
58ms
AAAA
52ms
TXT
202ms
CAA
55ms
HTTPS
64ms
TLSA
604ms
SOA
0ms
MTA-STS
55ms
DNSSEC
149ms
SRV
72ms
Total
1216ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 09:56:56 1216ms 2 NS 0 A 1 MX 🔒 Secure View
2026-08-09 03:37:03 1538ms 2 NS 0 A 1 MX 🔒 Secure View
2026-07-08 13:02:16 2076ms 2 NS 0 A 1 MX 🔒 Secure View
2026-06-24 11:11:30 627ms 2 NS 0 A 1 MX 🔒 Secure View
2026-06-24 07:48:21 2949ms 2 NS 0 A 1 MX ⚠️ Bogus View
2026-06-24 04:22:50 927ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-16 12:53:40 1318ms 2 NS 0 A 1 MX 🔒 Secure View
2026-06-16 12:50:25 1536ms 2 NS 0 A 1 MX 🔒 Secure View
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