understrup.dk
Last scanned: 2026-08-28 04:28:52  ·  850ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   44ms
NameserverIP addressesPTRASN / ISP
ns1.onwelcom.dk 185.51.79.241 ns1.onwelcom.dk AS205984 Powernet Aps
ns2.onwelcom.dk 185.51.79.251 — AS205984 Powernet Aps
🌍 A Records1 records   57ms
IPTTLPTRASNISP / OrgCIDRCountryCity
185.51.79.130 86400s web02.onwelcom.dk AS205984 Powernet Aps 185.51.78.0/23 🇩🇰 Denmark —
📧 MX Records2 records   42ms
PriorityTTLMail ServerIP addressesPTRASN
10 86400s mailfilter.onwelcom.dk 185.51.79.248 mailfilter.powernet.dk AS205984 Powernet Aps
20 86400s mx2.onwelcom.dk 185.51.79.248 mailfilter.powernet.dk AS205984 Powernet Aps
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover127.0.0.1
🔶 Autoconfig185.51.79.130
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records1 records   101ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 0 0 443 exchange.onwelcom.dk
📝 TXT Records1 records   317ms
TXT Record
v=spf1 a ip4:185.51.79.235 ip4:185.51.79.242 mx ~all
✉️ SPF
PolicyRecord (understrup.dk)
~all (soft fail) v=spf1 a ip4:185.51.79.235 ip4:185.51.79.242 mx ~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)
🔐 DNSSEC85ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2017021401
Primary NS (MNAME)ns1.onwelcom.dk
Responsible (RNAME)hostmaster@understrup.dk
Refresh3600s
Retry600s
Expire1209600s
Minimum (neg-cache TTL)86400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
44ms
A
57ms
MX
42ms
AAAA
47ms
TXT
317ms
CAA
45ms
HTTPS
49ms
TLSA
67ms
SOA
0ms
MTA-STS
116ms
DNSSEC
85ms
SRV
101ms
Total
850ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-28 04:28:52 850ms 2 NS 1 A 2 MX 🔓 Insecure View
2026-06-30 14:18:55 2741ms 2 NS 1 A 2 MX 🔓 Insecure View
2026-06-25 05:09:01 592ms 2 NS 1 A 2 MX 🔓 Insecure View
2026-06-23 12:03:19 567ms 2 NS 1 A 2 MX 🔓 Insecure View
2026-06-17 21:59:42 478ms 2 NS 1 A 2 MX 🔓 Insecure View
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