cotel.nl - robtex.com
cotel.nl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 2a01:1b0:7999:402::12🇳🇱 DUOCAST-AS2a01:1b0::/32 Duocast | ||||||
| PTR | neptune.exsilia.net | ||||||
| A | 83.137.145.12🇳🇱 DUOCAST-AS83.137.144.0/21 Duocast | ||||||
| NS | ns1.exsilia.net ⭐ | ||||||
| A | 2a01:1b0:4418::53🇳🇱 DUOCAST-AS2a01:1b0::/32 Duocast | ||||||
| PTR | ns1.duocast.net | ||||||
| A | 83.137.146.53🇳🇱 DUOCAST-AS83.137.146.0/24 Duocast | ||||||
| PTR | ns1.duocast.net | ||||||
| NS | ns2.exsilia.net | ||||||
| A | 2a01:1b1:4418::53🇳🇱 DUOCASTBACKUP-AS2a01:1b1::/32 | ||||||
| PTR | ns2.duocast.net | ||||||
| A | 91.209.7.53🇳🇱 DUOCASTBACKUP-AS91.209.7.0/24 | ||||||
| PTR | ns2.duocast.net | ||||||
| MX | neptune.exsilia.net ⭐ | ||||||
| A | 2a01:1b0:7999:402::12🇳🇱 DUOCAST-AS2a01:1b0::/32 Duocast | ||||||
| PTR | neptune.exsilia.net | ||||||
| A | 83.137.145.12🇳🇱 DUOCAST-AS83.137.144.0/21 Duocast | ||||||
| PTR | neptune.exsilia.net | ||||||
| TXT | v=spf1 include:_spf.exsilia.net include:_spf.google.com +a +mx ~all | ||||||
| SOA | ns1.exsilia.netgerard@cotel.nl 2021-03-23 #1 | ||||||
nl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns1.dns.nl ⭐ | ||||||
| NS | ns3.dns.nl | ||||||
| NS | ns4.dns.nl | ||||||
| TXT | nl zone update: 2026-07-19 20:00:01 +0000 (EPOCH 1784491201) | ||||||
| SOA | ns1.dns.nldns@sidn.nl 2026-07-19 #40 | ||||||
Subdomains
mail.cotel.nl |
Same first word
Similar names
DNS History
6 records (5 active, 1 former)
●NSns1.exsilia.net2015-08-11 → 2026-07-19 · 2 obs
● 2026-07-19 21:08:46
●NSns2.exsilia.net2015-08-11 → 2026-07-19 · 2 obs
● 2026-07-19 21:08:46
○MXmail.cotel.nl2015-08-11 → 2017-02-09 · 4 obs
● 2017-02-09 05:08:42
○ 2026-07-03 23:02:10
○ 2026-07-19 21:08:46
●MXneptune.exsilia.net2026-07-03 → 2026-07-19 · 3 obs
● 2026-07-03 23:02:10
● 2026-07-19 21:08:46
●A2a01:1b0:7999:402::122015-08-11 → 2026-07-19 · 2 obs
● 2026-07-19 21:08:46
●A83.137.145.122015-08-11 → 2026-07-19 · 2 obs
● 2026-07-19 21:08:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| nl | ns1.dns.nl, ns3.dns.nl, ns4.dns.nl | - |
| cotel.nl | ns1.exsilia.net, ns2.exsilia.net | - |
✅ Authoritative Response
Server:91.209.7.53
NS records: ns1.exsilia.net, ns2.exsilia.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 726ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 83.137.145.12 |
| AAAA | 1 | 2a01:1b0:7999:402::12 |
| NS | 2 | ns2.exsilia.net, ns1.exsilia.net |
| MX | 1 | neptune.exsilia.net (pri: 10) |
| TXT | 1 | v=spf1 include:_spf.exsilia.net include: |
| SOA | 1 | ns1.exsilia.net gerard.cotel.nl |
Analysis
Hierarchy
mail.cotel.nl is a subdomain of cotel.nl.
IP Addresses
cotel.nl has two IP addresses: 83.137.145.12 and 2a01:1b0:7999:402::12
is-x.nl, megamediamagazine.nl, obsdeboog.nl plus two other host names have IP numbers in common with cotel.nl.
Name Servers
cotel.nl has two authoritative name servers — ns1.exsilia.net and ns2.exsilia.net.
The name server configuration of cotel.nl is shared with other domains, for instance denada.nl, espanja.nl, curacaostart.com and two others.
cotel.nl has overlapping name servers with several other domains — among them artsoft.be, shopjemooi.nl, kein.nl and elpee.net.
Both ns1.exsilia.net and ns2.exsilia.net have two IP addresses each. ns1.exsilia.net resolves to 83.137.146.53 and 2a01:1b0:4418::53; ns2.exsilia.net resolves to 91.209.7.53 and 2a01:1b1:4418::53.
Mail Servers
cotel.nl uses one mail server — neptune.exsilia.net.
The mail server setup of cotel.nl matches that of other domains such as retroscent.be, hitlijstexpert.nl, hayabusaclubhollandforum.eu and two others.
neptune.exsilia.net resolves to two IP numbers — 83.137.145.12 and 2a01:1b0:7999:402::12.