tsb.dk
Last scanned: 2026-08-27 10:11:54  ·  4608ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   42ms
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   54ms
IPTTLPTRASNISP / OrgCIDRCountryCity
81.19.251.20 43200s — AS47292 Sentia Denmark A/S 81.19.248.0/22 🇩🇰 Denmark —
📧 MX Records
📧
No MX records found
🔷 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)
🔐 DNSSEC142ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026081001
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
42ms
A
54ms
MX
40ms
AAAA
33ms
TXT
200ms
CAA
36ms
HTTPS
78ms
TLSA
4085ms
SOA
0ms
MTA-STS
97ms
DNSSEC
142ms
SRV
94ms
Total
4608ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 10:11:54 4608ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-12 01:19:49 6738ms 2 NS 1 A 0 MX 🔒 Secure View
2026-07-18 00:15:17 6429ms 2 NS 1 A 0 MX 🔒 Secure View
2026-07-12 07:59:44 16554ms 2 NS 1 A 0 MX 🔒 Secure View
2026-06-26 01:16:36 3218ms 2 NS 1 A 0 MX 🔒 Secure View
2026-06-25 07:33:16 4608ms 2 NS 1 A 0 MX 🔒 Secure View
2026-06-22 17:43:11 1174ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-21 04:52:08 4428ms 2 NS 1 A 0 MX ⚠️ Bogus View
2026-06-17 11:42:08 4526ms 2 NS 1 A 0 MX 🔒 Secure View
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