b4ch.dk
📜 Historical scan 2026-06-16 13:57:36  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   42ms
NameserverIP addressesPTRASN / ISP
ns01.one.com — — —
ns02.one.com — — —
🌍 A Records1 records   42ms
IPTTLPTRASNISP / OrgCIDRCountryCity
89.23.254.56 — 89-23-254-56.ip4.fiberby.net AS42541 Fiberby ApS 89.23.224.0/19 🇩🇰 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)
🔐 DNSSEC138ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA44ms
FieldValue
Serial2026053101
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
42ms
MX
37ms
AAAA
38ms
TXT
109ms
CAA
39ms
HTTPS
40ms
TLSA
72ms
SOA
44ms
MTA-STS
45ms
DNSSEC
138ms
SRV
0ms
Total
442ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 18:38:44 626ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-25 12:36:15 806ms 2 NS 1 A 0 MX 🔒 Secure View
2026-08-06 03:56:28 1098ms 2 NS 1 A 0 MX 🔒 Secure View
2026-07-19 05:55:56 4852ms 2 NS 1 A 0 MX 🔒 Secure View
2026-07-01 12:59:36 505ms 2 NS 1 A 0 MX 🔒 Secure View
2026-06-23 21:49:59 458ms 2 NS 1 A 0 MX 🔒 Secure View
2026-06-22 15:50:51 1066ms 2 NS 1 A 0 MX 🔒 Secure View
2026-06-16 13:57:36 442ms 2 NS 1 A 0 MX 🔒 Secure View
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