host4u.dk
Last scanned: 2026-08-26 13:05:19  ·  572ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   57ms
NameserverIP addressesPTRASN / ISP
ns1.simply.com 2a02:2339:1:15c::4562:4562
91.197.248.78		 ns1.simply.com
ns1.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns2.simply.com 185.25.141.15
2a02:2339:4006:101::4562:4562		 ns2.simply.com
ns2.simply.com		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns3.simply.com 91.197.248.79 ns3.simply.com AS48854 team.blue Denmark A/S
ns4.simply.com 91.197.248.80 ns4.simply.com AS48854 team.blue Denmark A/S
🌍 A Records
🌍
No A records found
📧 MX Records1 records   54ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mail.host4u.dk 87.48.142.47 MX47.host4u.dk AS3292 TDC Holding A/S
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   135ms
TXT Record
v=spf1 a:mail.host4u.dk -all
✉️ SPF
PolicyRecord (host4u.dk)
-all (hard fail) v=spf1 a:mail.host4u.dk -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)
🔐 DNSSEC84ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsresolution failed: ncache nxrrset
🏷️ SOA0ms
FieldValue
Serial2026040900
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
57ms
A
40ms
MX
54ms
AAAA
48ms
TXT
135ms
CAA
62ms
HTTPS
47ms
TLSA
50ms
SOA
0ms
MTA-STS
61ms
DNSSEC
84ms
SRV
71ms
Total
572ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 13:05:19 572ms 4 NS 0 A 1 MX 🔒 Secure View
2026-06-25 14:59:15 572ms 4 NS 0 A 1 MX 🔒 Secure View
2026-06-25 13:54:02 785ms 4 NS 0 A 1 MX 🔒 Secure View
2026-06-21 21:24:10 596ms 4 NS 0 A 1 MX ⚠️ Bogus View
2026-06-17 13:16:58 2057ms 4 NS 0 A 1 MX 🔒 Secure View
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