dfbu.dk
Last scanned: 2026-08-31 18:29:24  ·  583ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   57ms
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   43ms
IPTTLPTRASNISP / OrgCIDRCountryCity
176.20.24.237 3600s — AS3292 TDC Holding A/S 176.20.0.0/17 🇩🇰 Denmark Brøndby
📧 MX Records2 records   45ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s eu1-smtp-mx1.titanhq.com 3.125.67.59
3.70.162.203
35.158.11.197
35.158.242.254		 eu1-smtp1.titanhq.com
eu1-smtp1.titanhq.com
eu1-smtp2.titanhq.com
eu1-smtp2.titanhq.com		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
20 3600s eu1-smtp-mx2.titanhq.com 3.125.67.59
3.70.162.203
35.158.11.197
35.158.242.254		 eu1-smtp1.titanhq.com
eu1-smtp1.titanhq.com
eu1-smtp2.titanhq.com
eu1-smtp2.titanhq.com		 AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
AS16509 Amazon.com, Inc.
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   156ms
TXT Record
v=spf1 include:spf.onkta.dk include:_spf.mailersend.net ~all
✉️ SPF
PolicyRecord (dfbu.dk)
~all (soft fail) v=spf1 include:spf.onkta.dk include:_spf.mailersend.net ~all
📨 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)
🔐 DNSSEC79ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026071803
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
57ms
A
43ms
MX
45ms
AAAA
43ms
TXT
156ms
CAA
62ms
HTTPS
56ms
TLSA
80ms
SOA
0ms
MTA-STS
72ms
DNSSEC
79ms
SRV
72ms
Total
583ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-31 18:29:24 583ms 2 NS 1 A 2 MX 🔒 Secure View
2026-08-28 02:35:36 1999ms 2 NS 1 A 2 MX 🔒 Secure View
2026-08-26 15:34:54 1175ms 2 NS 1 A 2 MX 🔒 Secure View
2026-07-18 23:33:19 1060ms 2 NS 1 A 2 MX 🔒 Secure View
2026-07-03 01:01:14 843ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-27 09:46:17 593ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-17 02:35:58 466ms 2 NS 1 A 1 MX 🔒 Secure View
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