cortex.online - dns.ninja
cortex.online
online
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns01.trs-dns.com ⭐ | ||||||
| NS | ns.trs-dns.com | ||||||
| NS | ns01.trs-dns.net | ||||||
| NS | ns10.trs-dns.info | ||||||
| NS | ns10.trs-dns.org | ||||||
| SOA | ns.trs-dns.comtrs-ops@tucows.com serial=1786454015 | ||||||
Same first word
Similar names
DNS History
12 records (7 active, 5 former)
○NSns01.is.nl2016-12-13 → 2017-07-05 · 4 obs
● 2017-07-05 19:32:02
○ 2026-03-27 03:54:52
○ 2026-08-11 13:20:50
○NSns02.is.nl2016-12-13 → 2017-07-05 · 4 obs
● 2017-07-05 19:32:02
○ 2026-03-27 03:54:52
○ 2026-08-11 13:20:50
○NSns03.is.nl2016-12-13 → 2017-07-05 · 4 obs
● 2017-07-05 19:32:02
○ 2026-03-27 03:54:52
○ 2026-08-11 13:20:50
●NSns1-02.azure-dns.com2026-03-27 → 2026-08-11 · 3 obs
● 2026-03-27 03:54:52
● 2026-08-11 13:20:50
●NSns2-02.azure-dns.net2026-03-27 → 2026-08-11 · 3 obs
● 2026-03-27 03:54:52
● 2026-08-11 13:20:50
●NSns3-02.azure-dns.org2026-03-27 → 2026-08-11 · 3 obs
● 2026-03-27 03:54:52
● 2026-08-11 13:20:50
●NSns4-02.azure-dns.info2026-03-27 → 2026-08-11 · 3 obs
● 2026-03-27 03:54:52
● 2026-08-11 13:20:50
●MXedge.werkonline.nu2026-03-27 → 2026-08-11 · 3 obs
● 2026-03-27 03:54:52
● 2026-08-11 13:20:50
○MXmail.werkonline.nu2016-12-13 → 2017-07-05 · 4 obs
● 2017-07-05 19:32:02
○ 2026-03-27 03:54:52
○ 2026-08-11 13:20:50
○A213.133.34.522016-12-13 → 2017-07-05 · 4 obs
● 2017-07-05 19:32:02
○ 2026-03-27 03:54:52
○ 2026-08-11 13:20:50
●A83.137.192.732026-03-27 → 2026-08-11 · 3 obs
● 2026-03-27 03:54:52
● 2026-08-11 13:20:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| online | ns01.trs-dns.com, ns01.trs-dns.net, ns10.trs-dns.org, ns10.trs-dns.info | - |
| cortex.online | ns4-02.azure-dns.info, ns3-02.azure-dns.org, ns1-02.azure-dns.com, ns2-02.azure-dns.net | - |
✅ Authoritative Response
Server:150.171.21.2
NS records: ns4-02.azure-dns.info, ns3-02.azure-dns.org, ns1-02.azure-dns.com, ns2-02.azure-dns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cortex.online (unsigned zone)
⏱️ Timing
Total: 563ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 83.137.192.73 |
| NS | 4 | ns1-02.azure-dns.com, ns2-02.azure-dns.net... |
| MX | 2 | etrn.is.nl (pri: 30), edge.werkonline.nu (pri: 10) |
| SOA | 1 | ns1-02.azure-dns.com azuredns-hostmaster |
Analysis
IP Addresses
cortex.online has exactly one IP address — 83.137.192.73.
laprocon.nl, studio58.nl, sault.nl plus two other host names have IP numbers in common with cortex.online.
Name Servers
Four name servers handle the delegation for cortex.online: ns1-02.azure-dns.com, ns4-02.azure-dns.info, ns2-02.azure-dns.net and ns3-02.azure-dns.org.
At least some of cortex.online's name servers are shared with other domains, for example tradefinanceinvestment.com, aktekdns.com, atalengineeringgroup.com and two more.
Four hostnames, each resolving to a pair of IP addresses: ns1-02.azure-dns.com directs to 13.107.236.2 and 2603:1061:0:700::2; ns4-02.azure-dns.info directs to 208.84.5.2 and 2620:1ec:bda:700::2; ns2-02.azure-dns.net directs to 150.171.21.2 and 2620:1ec:8ec:700::2; ns3-02.azure-dns.org directs to 204.14.183.2 and 2a01:111:4000:700::2.
Mail Servers
cortex.online uses two mail servers, etrn.is.nl and edge.werkonline.nu.
The mail server setup of cortex.online matches that of other domains such as monier-master.nl, can-bus.nl, combi-camp-club.dk and two others.
At least some of the mail servers used by cortex.online are shared with other domains: knrm.tips, tpook.nl, sfmagazine.nl and two others among them.
It is common to see these mail servers combined with the mail servers bounce.argewebhosting.nl, mail.werkonline.nu and mx.is.nl.
Each of etrn.is.nl and edge.werkonline.nu has one IP address: etrn.is.nl uses 213.133.46.8 and edge.werkonline.nu uses 82.201.57.4.