optimumsupplies.dk
Last scanned: 2026-06-23 11:54:55  ·  3049ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   457ms
NameserverIP addressesPTRASN / ISP
nsauth1.introweb.nl 2001:1690:1:a::a
80.65.96.48		 nsauth1.introweb.nl
nsauth1.introweb.nl		 AS20847 Previder B.V.
AS20847 Previder B.V.
nsauth2.introweb.nl 2a0d:8600:1::5a
86.105.160.91		 nsauth2.introweb.nl
nsauth2.introweb.nl		 AS205185 Eurofiber Cloud Infra B.V.
AS205185 Eurofiber Cloud Infra B.V.
nsauth3.introweb.net 2001:1690:1:c::a
62.165.127.221		 nsauth3.introweb.net
nsauth3.introweb.net		 AS20847 Previder B.V.
AS20847 Previder B.V.
🌍 A Records
🌍
No A records found
📧 MX Records1 records   461ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mx.previder.nl 2001:1690:65::100
62.165.65.100		 mx.previder.nl
mx.previder.nl		 AS20847 Previder B.V.
AS20847 Previder B.V.
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records
📝
No TXT records found
✉️ SPF
✗ No SPF record — mail spoofing not restricted
📨 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 / DANE1 records   290ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.previder.nl DANE-EE · SPKI · SHA-256 7849224D1C24FD6B04CB0E1D036A0434…
🔐 DNSSEC500ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✓ Found
Flagsresolution failed: ncache nxrrset
🏷️ SOA321ms
FieldValue
Serial2020102101
Primary NS (MNAME)nsauth1.introweb.nl
Responsible (RNAME)postmaster@introweb.nl
Refresh28800s
Retry7200s
Expire604800s
Minimum (neg-cache TTL)86400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
457ms
A
327ms
MX
461ms
AAAA
459ms
TXT
743ms
CAA
439ms
HTTPS
433ms
TLSA
290ms
SOA
321ms
MTA-STS
467ms
DNSSEC
500ms
SRV
476ms
Total
3049ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-06-23 11:54:55 3049ms 3 NS 0 A 1 MX 🔓 Insecure View
2026-06-21 05:04:22 1182ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-18 04:40:05 2807ms 3 NS 0 A 1 MX 🔓 Insecure View
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