`mastering.co.za`

DNSSEC	⚠️ Not signed
A	129.232.249.188^{🇿🇦 xneelo129.232.128.0/17 -JHB-BLK}
		PTR	`www534.jnb1.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	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c07::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bc-in-f26.1e100.net`
		A	142.251.167.27^{🇺🇸 Google142.251.167.0/24}
			PTR	`ww-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c00::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`ws-in-f26.1e100.net`
			PTR	`ws-in-x1a.1e100.net`
		A	173.194.76.27^{🇺🇸 Google173.194.76.0/24}
			PTR	`ws-in-f27.1e100.net`
TXT	`google-site-verification=pSDaAtNF-NvaT1AGhgOP4BqmMSGEN8dx9TZNDFUaBAA`
TXT	`v=spf1 include:_spf.google.com include:spf.smtp2go.com -all`
SOA	`ns1.host-h.net`postmaster@mastering.co.za serial=20260410

`co.za`

	DNSSEC	⚠️ Not signed
	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.za`this-is-probably-not-the-email-address-you-are-looking-for@co.za serial=2025074409

rank #709198 globally
rank #1333 in the tld
WOT: SAFE (72/100)

Same first word

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DNS History

17 records (10 active, 7 former)

○NSdns1.afrihost.com2015-06-02 → 2016-02-17 · 4 obs

● 2015-06-02 03:49:54
● 2016-02-17 05:12:52
○ 2020-01-23 15:27:52
○ 2026-06-04 22:54:06

○NSns.dns1.co.za2015-06-02 → 2016-02-17 · 4 obs

● 2015-06-02 03:49:54
● 2016-02-17 05:12:52
○ 2020-01-23 15:27:52
○ 2026-06-04 22:54:06

○NSns.dns2.co.za2015-06-02 → 2016-02-17 · 4 obs

● 2015-06-02 03:49:54
● 2016-02-17 05:12:52
○ 2020-01-23 15:27:52
○ 2026-06-04 22:54:06

○NSns.otherdns.com2015-06-02 → 2016-02-17 · 4 obs

● 2015-06-02 03:49:54
● 2016-02-17 05:12:52
○ 2020-01-23 15:27:52
○ 2026-06-04 22:54:06

○NSns.otherdns.net2015-06-02 → 2016-02-17 · 4 obs

● 2015-06-02 03:49:54
● 2016-02-17 05:12:52
○ 2020-01-23 15:27:52
○ 2026-06-04 22:54:06

●NSns1.dns-h.com2020-01-23 → 2026-06-04 · 3 obs

○ 2016-02-17 05:12:52
● 2020-01-23 15:27:52
● 2026-06-04 22:54:06

●NSns1.host-h.net2020-01-23 → 2026-06-04 · 3 obs

○ 2016-02-17 05:12:52
● 2020-01-23 15:27:52
● 2026-06-04 22:54:06

●NSns2.dns-h.com2020-01-23 → 2026-06-04 · 3 obs

○ 2016-02-17 05:12:52
● 2020-01-23 15:27:52
● 2026-06-04 22:54:06

●NSns2.host-h.net2020-01-23 → 2026-06-04 · 3 obs

○ 2016-02-17 05:12:52
● 2020-01-23 15:27:52
● 2026-06-04 22:54:06

●MXalt1.aspmx.l.google.com2020-01-23 → 2026-06-04 · 3 obs

○ 2016-02-17 05:12:52
● 2020-01-23 15:27:52
● 2026-06-04 22:54:06

●MXalt2.aspmx.l.google.com2020-01-23 → 2026-06-04 · 3 obs

○ 2016-02-17 05:12:52
● 2020-01-23 15:27:52
● 2026-06-04 22:54:06

●MXalt3.aspmx.l.google.com2020-01-23 → 2026-06-04 · 3 obs

○ 2016-02-17 05:12:52
● 2020-01-23 15:27:52
● 2026-06-04 22:54:06

●MXalt4.aspmx.l.google.com2020-01-23 → 2026-06-04 · 3 obs

○ 2016-02-17 05:12:52
● 2020-01-23 15:27:52
● 2026-06-04 22:54:06

●MXaspmx.l.google.com2020-01-23 → 2026-06-04 · 3 obs

○ 2016-02-17 05:12:52
● 2020-01-23 15:27:52
● 2026-06-04 22:54:06

○MXmx634763.spe.ucebox.co.za2015-06-02 → 2016-02-17 · 4 obs

● 2015-06-02 03:49:54
● 2016-02-17 05:12:52
○ 2020-01-23 15:27:52
○ 2026-06-04 22:54:06

●A129.232.249.1882020-01-23 → 2026-06-04 · 3 obs

○ 2016-02-17 05:12:52
● 2020-01-23 15:27:52
● 2026-06-04 22:54:06

○A197.242.144.412015-06-02 → 2016-02-17 · 4 obs

● 2015-06-02 03:49:54
● 2016-02-17 05:12:52
○ 2020-01-23 15:27:52
○ 2026-06-04 22:54:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co.za	ns2.dns.net.za, ns5.dns.net.za, coza1.dnsnode.net, ns2us.dns.business...	-
mastering.co.za	ns1.dns-h.com, ns1.host-h.net, ns2.dns-h.com, ns2.host-h.net	-

✅ Authoritative Response

Server:129.232.248.40

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: 3132ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`129.232.249.188`
NS	4	`ns2.dns-h.com, ns1.dns-h.com...`
MX	5	`ALT2.ASPMX.L.GOOGLE.COM (pri: 5), ALT3.ASPMX.L.GOOGLE.COM (pri: 10)...`
TXT	2	`google-site-verification=pSDaAtNF-NvaT1A, v=spf1 include:_spf.google.com include:s`
SOA	1	`ns1.host-h.net postmaster.mastering.co.z`

Analysis

IP Addresses

mastering.co.za directs to one IP number, which is 129.232.249.188.

Among the host names that share IP numbers with mastering.co.za are lptronic.com, mail.gotrolley.com, mail.newgen.co.za and two others.

Name Servers

DNS for mastering.co.za is handled by 4 name servers: ns1.dns-h.com, ns2.dns-h.com, ns1.host-h.net and ns2.host-h.net.

The name servers of mastering.co.za overlap at least partially with those of other domains — among them flysafairmail.co.za, africanrootswines.com, standerhoutwerke.co.za and two more.

These name servers commonly appear alongside the name servers ns1a.your-server.co.za and nsa.primary-ns.co.za.

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

mastering.co.za uses 5 mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com plus two additional ones.

mastering.co.za shares at least some of its mail servers with other domains — for example f1motors.net, pushspring.com, saffronroses.com and two more.

These mail servers tend to co-occur with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and three additional mail servers.

Hosts with two IP numbers each:

aspmx.l.google.com has two IP addresses: 142.251.167.27 and 2607:f8b0:4004:c07::1a.

alt1.aspmx.l.google.com has two IP addresses: 108.177.123.27 and 2800:3f0:4003:c0f::1b.

alt2.aspmx.l.google.com has two IP addresses: 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com has two IP addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com has two IP addresses: 173.194.76.27 and 2a00:1450:400c:c00::1a.