cortexsystems.co.za - robtex.com
cortexsystems.co.za
| DNSSEC | ⚠️ Not signed | ||||||
| A | 129.232.137.127🇿🇦 xneelo129.232.128.0/17 -JHB-BLK | ||||||
| PTR | www3.jnb3.host-h.net | ||||||
| NS | ns1.host-h.net ⭐ | ||||||
| A | 129.232.248.30🇿🇦 xneelo129.232.248.0/24 AnyCast DNS | ||||||
| PTR | ns1.host-h.net | ||||||
| NS | ns1.dns-h.com | ||||||
| A | 129.232.248.31🇿🇦 xneelo129.232.248.0/24 AnyCast DNS | ||||||
| PTR | ns1.dns-h.com | ||||||
| NS | ns2.dns-h.com | ||||||
| A | 129.232.248.41🇿🇦 xneelo129.232.248.0/24 AnyCast DNS | ||||||
| PTR | ns2.dns-h.com | ||||||
| NS | ns2.host-h.net | ||||||
| A | 129.232.248.40🇿🇦 xneelo129.232.248.0/24 AnyCast DNS | ||||||
| PTR | ns2.host-h.net | ||||||
| MX | mail.cortexsystems.co.za ⭐ | ||||||
| A | 129.232.137.127🇿🇦 xneelo129.232.128.0/17 -JHB-BLK | ||||||
| PTR | www3.jnb3.host-h.net | ||||||
| TXT | v=spf1 mx a include:spf.host-h.net ?all | ||||||
| SOA | ns1.host-h.netpostmaster@cortexsystems.co.za 2026-07-02 #1 | ||||||
co.za
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns.coza.net.za ⭐ | ||||||
| NS | coza1.dnsnode.net | ||||||
| NS | ns2.dns.net.za | ||||||
| NS | ns2us.dns.business | ||||||
| NS | ns5.dns.net.za | ||||||
| MX | mx2.dns.business ⭐ | ||||||
| TXT | google-site-verification=likJ1inLA3BiWH30vLTURD5kbYZshPreaO0bQH_pMVM | ||||||
| TXT | v=spf1 a:mail.coza.net.za a:mx2.coza.net.za a:mail.registry.net.za include:_... | ||||||
| SOA | ns.coza.net.zathis-is-probably-not-the-email-address-you-are-looking-for@co.za serial=2025079589 | ||||||
rank #1179 in the tld
WOT: SAFE (72/100)
Same first word
cortexsystems.pro |
cortexsystems.co.za |
DNS History
6 records (6 active, 0 former)
●NSns1.host-h.net2026-07-16 → 2026-07-28 · 2 obs
● 2026-07-28 21:00:00
●NSns2.host-h.net2026-07-16 → 2026-07-28 · 2 obs
● 2026-07-28 21:00:00
●MXmail.cortexsystems.co.za2026-07-16 → 2026-07-28 · 2 obs
● 2026-07-28 21:00:00
●A129.232.137.1272026-07-16 → 2026-07-28 · 2 obs
● 2026-07-28 21:00:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| co.za | ns5.dns.net.za, ns2us.dns.business, ns2.dns.net.za, ns.coza.net.za... | - |
| cortexsystems.co.za | ns2.dns-h.com, ns1.host-h.net, ns1.dns-h.com, ns2.host-h.net | - |
✅ Authoritative Response
Server:129.232.248.41
NS records: ns2.dns-h.com, ns1.host-h.net, ns1.dns-h.com, ns2.host-h.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for co.za (unsigned zone)
⏱️ Timing
Total: 1453ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 129.232.137.127 |
| NS | 4 | ns2.dns-h.com, ns1.dns-h.com... |
| MX | 1 | mail.cortexsystems.co.za (pri: 10) |
| TXT | 1 | v=spf1 mx a include:spf.host-h.net ?all |
| SOA | 1 | ns1.host-h.net postmaster.cortexsystems. |
Analysis
IP Addresses
cortexsystems.co.za directs to one IP number, which is 129.232.137.127.
Among the host names that share IP numbers with cortexsystems.co.za are www3.jnb3.host-h.net, mail.mag-mark.co.za, obliique.co.za and two others.
Name Servers
The domain cortexsystems.co.za is delegated to these four name servers: ns1.dns-h.com, ns2.dns-h.com, ns1.host-h.net and ns2.host-h.net.
There is at least partial name server overlap between cortexsystems.co.za and other domains — mrmarcs.com, printegration.co.za, assc.co.za and two more among them.
The name servers ns99.your-server.de, nsa.primary-ns.co.za and ns1a.your-server.co.za are often found in combination with these name servers.
ns1.dns-h.com resolves to 129.232.248.31. ns2.dns-h.com resolves to 129.232.248.41. ns1.host-h.net resolves to 129.232.248.30. ns2.host-h.net resolves to 129.232.248.40. All four hosts carry exactly one IP address.
Mail Servers
cortexsystems.co.za routes its mail through a single mail server, mail.cortexsystems.co.za.
mail.cortexsystems.co.za resolves to 129.232.137.127 and no other IP number.