obsurv.dk
Last scanned: 2026-08-28 09:58:02  ·  3782ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   62ms
NameserverIP addressesPTRASN / ISP
nsa.byte.nl 46.21.228.110 nsa.byte.nl AS34762 Combell NV
nsb.byte.nl 46.21.225.222 nsb.byte.nl AS34762 Combell NV
nsc.byte.nl 87.238.161.15 nsc.byte.nl AS34762 Combell NV
🌍 A Records
🌍
No A records found
📧 MX Records2 records   64ms
PriorityTTLMail ServerIP addressesPTRASN
10 600s smtp1.byte.nl 83.217.77.178
83.217.77.179
83.217.77.182
83.217.77.183
83.217.77.186
83.217.77.187		 cmbmx.byte.nl
cmbmx.byte.nl
cmbmx.byte.nl
cmbmx.byte.nl
cmbmx.byte.nl
cmbmx.byte.nl		 AS34762 Combell NV
AS34762 Combell NV
AS34762 Combell NV
AS34762 Combell NV
AS34762 Combell NV
AS34762 Combell NV
20 600s smtp2.byte.nl 87.233.77.245 — AS15703 TrueFullstaq B.V.
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover195.81.168.116
🔶 Autoconfig195.81.168.116
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   378ms
TXT Record
v=spf1 include:spf.byte.nl ?all
✉️ SPF
PolicyRecord (obsurv.dk)
?all (neutral) v=spf1 include:spf.byte.nl ?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)
🔐 DNSSEC2074ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsresolution failed: ncache nxrrset
🏷️ SOA0ms
FieldValue
Serial2003030410
Primary NS (MNAME)nsa.byte.nl
Responsible (RNAME)hostmaster@byte.nl
Refresh10800s
Retry3600s
Expire604800s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
62ms
A
58ms
MX
64ms
AAAA
75ms
TXT
378ms
CAA
58ms
HTTPS
59ms
TLSA
94ms
SOA
0ms
MTA-STS
102ms
DNSSEC
2074ms
SRV
122ms
Total
3782ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-28 09:58:02 3782ms 3 NS 0 A 2 MX 🔓 Insecure View
2026-08-26 18:21:05 1162ms 3 NS 0 A 2 MX 🔓 Insecure View
2026-06-20 10:18:29 884ms 3 NS 0 A 2 MX 🔓 Insecure View
2026-06-18 04:28:07 910ms 3 NS 0 A 2 MX 🔓 Insecure View
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