define4u.dk
Last scanned: 2026-08-28 01:06:31  ·  553ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   42ms
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 Records1 records   53ms
IPTTLPTRASNISP / OrgCIDRCountryCity
94.231.103.33 3600s linux58.unoeuro.com AS48854 team.blue Denmark A/S 94.231.96.0/20 🇩🇰 Denmark —
📧 MX Records1 records   52ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mail.define4u.dk 77.213.64.104 mail.define4u.dk AS9158 Telenor A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover77.213.64.104
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   171ms
TXT Record
v=spf1 ip4:77.213.64.104 ~all
✉️ SPF
PolicyRecord (define4u.dk)
~all (soft fail) v=spf1 ip4:77.213.64.104 ~all
📨 DMARC
PolicyRecord (_dmarc.define4u.dk)
p=none (monitor only) v=DMARC1; p=none; rua=mailto:jlc@define4u.dk; ruf=mailto:jlc@define4u.dk; fo=1
📬 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)
🔐 DNSSEC83ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2025012003
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
42ms
A
53ms
MX
52ms
AAAA
71ms
TXT
171ms
CAA
33ms
HTTPS
47ms
TLSA
65ms
SOA
0ms
MTA-STS
63ms
DNSSEC
83ms
SRV
64ms
Total
553ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-28 01:06:31 553ms 4 NS 1 A 1 MX 🔒 Secure View
2026-08-25 00:21:54 520ms 4 NS 1 A 1 MX 🔒 Secure View
2026-06-25 07:49:00 1814ms 4 NS 1 A 1 MX 🔒 Secure View
2026-06-18 23:14:13 736ms 4 NS 1 A 1 MX 🔒 Secure View
2026-06-17 01:43:55 1597ms 4 NS 1 A 1 MX 🔒 Secure View
2026-06-17 01:31:23 551ms 4 NS 1 A 1 MX 🔒 Secure View
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