optimumgroupgreenliner.dk
Last scanned: 2026-08-25 23:41:13  ·  2873ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   67ms
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 Records1 records   79ms
IPTTLPTRASNISP / OrgCIDRCountryCity
62.165.75.168 3600s ip-62-165-75-168.previder.nl AS20847 Previder B.V. 62.165.64.0/18 🇳🇱 The Netherlands Harbrinkhoek
📧 MX Records1 records   58ms
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)1 records   64ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2001:1690:2:1956::4400 3600s — AS20847 Previder B.V. 2001:1690:0:0:0:0:0:0/32 🇳🇱 The Netherlands —
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   255ms
TXT Record
v=DMARC1;p=reject;
v=spf1 a mx ~all
✉️ SPF
PolicyRecord (optimumgroupgreenliner.dk)
~all (soft fail) v=spf1 a 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 / DANE1 records   180ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.previder.nl DANE-EE · SPKI · SHA-256 7849224D1C24FD6B04CB0E1D036A0434…
🔐 DNSSEC2074ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2024102102
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
67ms
A
79ms
MX
58ms
AAAA
64ms
TXT
255ms
CAA
64ms
HTTPS
64ms
TLSA
180ms
SOA
0ms
MTA-STS
82ms
DNSSEC
2074ms
SRV
88ms
Total
2873ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-25 23:41:13 2873ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-29 20:48:38 941ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-22 11:01:05 3240ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-21 06:27:37 963ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-18 03:58:18 734ms 3 NS 1 A 1 MX 🔓 Insecure View
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