itheory.eu - robtex.com
itheory.eu
eu
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | si.dns.eu ⭐ | ||||||
| NS | be.dns.eu | ||||||
| NS | w.dns.eu | ||||||
| NS | x.dns.eu | ||||||
| NS | y.dns.eu | ||||||
| SOA | si.dns.eutech@eurid.eu serial=1128553745 | ||||||
Same first word
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DNS History
6 records (6 active, 0 former)
●NSns0.leaseweb.nl2015-05-03 → 2026-09-30 · 2 obs
● 2026-09-30 20:51:34
●NSns1.leaseweb.nl2015-05-03 → 2026-09-30 · 2 obs
● 2026-09-30 20:51:34
●NSns4.leaseweb.net2015-05-03 → 2026-09-30 · 2 obs
● 2026-09-30 20:51:34
●NSns5.leaseweb.nl2015-05-03 → 2026-09-30 · 2 obs
● 2026-09-30 20:51:34
●MXmailfilter.leaseweb.com2015-05-03 → 2026-09-30 · 2 obs
● 2026-09-30 20:51:34
●A85.17.96.1112015-05-03 → 2026-09-30 · 2 obs
● 2026-09-30 20:51:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| eu | y.dns.eu, w.dns.eu, si.dns.eu, x.dns.eu... | - |
| itheory.eu | ns1.leaseweb.nl, ns5.leaseweb.nl, ns4.leaseweb.net | - |
✅ Authoritative Response
Server:23.19.196.53
NS records: ns1.leaseweb.nl, ns5.leaseweb.nl, ns4.leaseweb.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for itheory.eu (unsigned zone)
⏱️ Timing
Total: 1681ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 85.17.96.111 |
| NS | 4 | ns1.leaseweb.nl, ns5.leaseweb.nl... |
| MX | 1 | mailfilter.leaseweb.com (pri: 10) |
| SOA | 1 | ns0.leaseweb.nl Postmaster.leaseweb.nl |
Analysis
IP Addresses
itheory.eu points to a single IP number: 85.17.96.111.
Additional host names — trekhaakexpert.be, farmedaid.nl, rs19096.rapidspeeds.com and two others — share IP numbers with itheory.eu.
Name Servers
itheory.eu has four authoritative name servers: ns4.leaseweb.net, ns0.leaseweb.nl, ns1.leaseweb.nl and ns5.leaseweb.nl.
At least some of itheory.eu's name servers are shared with other domains, for example envivio.nl, 200.211.95.in-addr.arpa, 23.211.95.in-addr.arpa and two more.
These name servers tend to be deployed in combination with the name servers ns0.leaseweb.com and ns1.leaseweb.com.
Four hostnames, each with two IP addresses. ns4.leaseweb.net, ns0.leaseweb.nl and ns1.leaseweb.nl all resolve to 23.19.196.53 and 2607:f5b5::53. ns5.leaseweb.nl has IP addresses 23.19.197.53 and 2607:f5b5:1::53.
ns4.leaseweb.net, ns0.leaseweb.nl and ns1.leaseweb.nl are host names that all point to 2607:f5b5::53.
ns4.leaseweb.net, ns0.leaseweb.nl and ns1.leaseweb.nl are host names that all point to 23.19.196.53.
Mail Servers
itheory.eu has one mail server: mailfilter.leaseweb.com.
itheory.eu shares the same mail server setup as other domains, including werkenbijverusadvies.nl, nederlandsonderwijswereldwijd.com, eendraght.net and two others.
itheory.eu shares mail servers — at least in part — with other domains, including direktwerk.com, gameservers.pl, willemvanthiel.com and two others.
It is common to see these mail servers combined with the mail servers mail1.leaseweb.nl, mail2.leaseweb.nl and mail3.leaseweb.nl.
mailfilter.leaseweb.com points to three IP addresses: 83.149.80.118, 85.17.96.86 and 85.17.150.25.