mail.cocu.nl - robtex.com

mail.cocu.nl

DNSSEC⚠️ Not signed
A2a01:7c8:fff9:14f::20🇳🇱 TRANSIP-AS2a01:7c8::/32 TransIP B.V. Amsterdam IPv6 network
PTRcocu.nl
A136.144.132.73🇳🇱 TRANSIP-AS136.144.128.0/17 TransIP BV Amsterdam, The Netherlands

cocu.nl

DNSSEC⚠️ Not signed
A2a01:7c8:fff9:14f::20🇳🇱 TRANSIP-AS2a01:7c8::/32 TransIP B.V. Amsterdam IPv6 network
A136.144.132.73🇳🇱 TRANSIP-AS136.144.128.0/17 TransIP BV Amsterdam, The Netherlands
NSns1.synet.nl ⭐
NSns2.synet.nl
MXmail.cocu.nl ⭐
TXTv=spf1 mx a ip4:136.144.132.73 ip6:2a01:7c8:fff9:14f:0:0:0:0/64 include:_spf....
SOAns1.synet.nlhostmaster@cocu.nl 2025-05-21 #1

MX for

cocu.nl

Same first word

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DNS History

2 records (2 active, 0 former)

A136.144.132.732a01:7c8:fff9:14f::20
●A136.144.132.732026-04-05 → 2026-07-23 · 2 obs
● 2026-04-05 15:15:26
● 2026-07-23 18:33:08
●A2a01:7c8:fff9:14f::202026-04-05 → 2026-07-23 · 2 obs
● 2026-04-05 15:15:26
● 2026-07-23 18:33:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
nlns1.dns.nl, ns3.dns.nl, ns4.dns.nl-
cocu.nlns2.synet.nl, ns1.synet.nl4 records

✅ Authoritative Response

Server:136.144.206.217

NS records: ns2.synet.nl, ns1.synet.nl

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cocu.nl (unsigned zone)

⏱️ Timing

Total: 227ms | Queries: -

📄 Records

TypeCountSample Data
A1136.144.132.73
AAAA12a01:7c8:fff9:14f::20

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns2.synet.nl, ns1.synet.nl, ns2.synet.nl...)

Analysis

Mail Server Role

Mail for cocu.nl is routed through the mail server mail.cocu.nl.

IP Addresses

mail.cocu.nl points to the IP addresses 136.144.132.73 and 2a01:7c8:fff9:14f::20

vanriemsdijk.com, elmo.store, berghoef.nl plus two other host names have IP numbers in common with mail.cocu.nl.