`mail.cortexsystems.co.za`

DNSSEC	⚠️ Not signed
A	129.232.137.127^{🇿🇦 xneelo129.232.128.0/17 -JHB-BLK}
		PTR	`www3.jnb3.host-h.net`

`cortexsystems.co.za`

	DNSSEC	⚠️ Not signed
	A	129.232.137.127^{🇿🇦 xneelo129.232.128.0/17 -JHB-BLK}
	NS	`ns1.host-h.net` ⭐
	NS	`ns1.dns-h.com`
	NS	`ns2.dns-h.com`
	NS	`ns2.host-h.net`
	MX	`mail.cortexsystems.co.za` ⭐
	TXT	`v=spf1 mx a include:spf.host-h.net ?all`
	SOA	`ns1.host-h.net`postmaster@cortexsystems.co.za 2026-07-02 #1

MX for

cortexsystems.co.za

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DNS History

1 record (1 active, 0 former)

●A129.232.137.1272026-07-28 → 2026-08-02 · 2 obs

● 2026-07-28 21:00:00
● 2026-08-02 00:03:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co.za	ns2.dns.net.za, ns.coza.net.za, ns2us.dns.business, coza1.dnsnode.net...	-
cortexsystems.co.za	ns1.dns-h.com, ns1.host-h.net, ns2.dns-h.com, ns2.host-h.net	-

✅ Authoritative Response

Server:129.232.248.31

NS records: ns1.dns-h.com, ns1.host-h.net, ns2.dns-h.com, ns2.host-h.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for co.za (unsigned zone)

⏱️ Timing

Total: 1276ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`129.232.137.127`

Analysis

Mail Server Role

Mail for cortexsystems.co.za is routed through the mail server mail.cortexsystems.co.za.

IP Addresses

mail.cortexsystems.co.za has exactly one IP address — 129.232.137.127.

spress.co.za, mail.mammoth.co.za, egolifoods.co.za plus two other host names have IP numbers in common with mail.cortexsystems.co.za.

mail.cortexsystems.co.za - robtex.com