`master303.net`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:c7d^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::ac43:c27e^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.12.125^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.194.126^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cortney.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a57^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cortney.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c057^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cortney.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2057^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cortney.ns.cloudflare.com`
		A	108.162.192.87^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cortney.ns.cloudflare.com`
		A	172.64.32.87^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cortney.ns.cloudflare.com`
		A	173.245.58.87^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cortney.ns.cloudflare.com`
NS	`roman.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c67^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`roman.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c367^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`roman.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2367^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`roman.ns.cloudflare.com`
		A	108.162.195.103^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`roman.ns.cloudflare.com`
		A	162.159.44.103^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`roman.ns.cloudflare.com`
		A	172.64.35.103^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`roman.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.12.125, 172.67.194.126
		IPv6 hints	2606:4700:3030::6815:c7d, 2606:4700:3032::ac43:c27e
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=202, name=cloudflare-ech.com
SOA	`cortney.ns.cloudflare.com`dns@cloudflare.com serial=2407284858

`net`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1784452122

Previously MX for

master303.net

Same first word

master303.institute

master303.com

master303.net

master303.ac.id

master303.id

master303.live

DNS History

26 records (6 active, 20 former)

●NScortney.ns.cloudflare.com2026-02-15 → 2026-07-19 · 3 obs

○ 2017-03-30 22:38:24
● 2026-02-15 00:18:20
● 2026-07-19 09:38:46

○NSdns1.registrar-servers.com2015-05-26 → 2016-07-19 · 4 obs

● 2015-05-26 08:52:02
● 2016-07-19 19:22:52
○ 2017-03-30 22:38:24
○ 2026-07-19 09:38:46

○NSdns2.registrar-servers.com2015-05-26 → 2016-07-19 · 4 obs

● 2015-05-26 08:52:02
● 2016-07-19 19:22:52
○ 2017-03-30 22:38:24
○ 2026-07-19 09:38:46

○NSdns3.registrar-servers.com2015-05-26 → 2016-07-19 · 4 obs

● 2015-05-26 08:52:02
● 2016-07-19 19:22:52
○ 2017-03-30 22:38:24
○ 2026-07-19 09:38:46

○NSdns4.registrar-servers.com2015-05-26 → 2016-07-19 · 4 obs

● 2015-05-26 08:52:02
● 2016-07-19 19:22:52
○ 2017-03-30 22:38:24
○ 2026-07-19 09:38:46

○NSdns5.registrar-servers.com2015-05-26 → 2016-07-19 · 4 obs

● 2015-05-26 08:52:02
● 2016-07-19 19:22:52
○ 2017-03-30 22:38:24
○ 2026-07-19 09:38:46

○NSns1.garudahosting.net2017-03-30 → 2017-03-30 · 4 obs

○ 2016-07-19 19:22:52
● 2017-03-30 22:38:24
○ 2026-02-15 00:18:20
○ 2026-07-19 09:38:46

○NSns2.garudahosting.net2017-03-30 → 2017-03-30 · 4 obs

○ 2016-07-19 19:22:52
● 2017-03-30 22:38:24
○ 2026-02-15 00:18:20
○ 2026-07-19 09:38:46

●NSroman.ns.cloudflare.com2026-02-15 → 2026-07-19 · 3 obs

○ 2017-03-30 22:38:24
● 2026-02-15 00:18:20
● 2026-07-19 09:38:46

○MXeforward1.registrar-servers.com2015-10-16 → 2016-07-19 · 4 obs

● 2015-10-16 01:26:16
● 2016-07-19 19:22:52
○ 2017-03-30 22:38:24
○ 2026-07-19 09:38:46

○MXeforward2.registrar-servers.com2015-10-16 → 2016-07-19 · 4 obs

● 2015-10-16 01:26:16
● 2016-07-19 19:22:52
○ 2017-03-30 22:38:24
○ 2026-07-19 09:38:46

○MXeforward3.registrar-servers.com2015-10-16 → 2016-07-19 · 4 obs

● 2015-10-16 01:26:16
● 2016-07-19 19:22:52
○ 2017-03-30 22:38:24
○ 2026-07-19 09:38:46

○MXeforward4.registrar-servers.com2015-10-16 → 2016-07-19 · 4 obs

● 2015-10-16 01:26:16
● 2016-07-19 19:22:52
○ 2017-03-30 22:38:24
○ 2026-07-19 09:38:46

○MXeforward5.registrar-servers.com2015-10-16 → 2016-07-19 · 4 obs

● 2015-10-16 01:26:16
● 2016-07-19 19:22:52
○ 2017-03-30 22:38:24
○ 2026-07-19 09:38:46

○MXmaster303.net2017-03-30 → 2026-02-15 · 5 obs

○ 2016-07-19 19:22:52
● 2017-03-30 22:38:24
● 2026-02-15 19:38:10
○ 2026-04-25 09:11:16
○ 2026-07-19 09:38:46

●A104.21.12.1252026-02-15 → 2026-07-19 · 6 obs

○ 2017-03-30 22:38:24
● 2026-02-15 00:18:20
● 2026-06-10 02:33:06
○ 2026-06-10 15:18:40
● 2026-06-14 02:53:56
● 2026-07-19 09:38:46

○A162.255.119.92015-05-26 → 2016-07-19 · 4 obs

● 2015-05-26 08:52:02
● 2016-07-19 19:22:52
○ 2017-03-30 22:38:24
○ 2026-07-19 09:38:46

●A172.67.194.1262026-02-15 → 2026-07-19 · 6 obs

○ 2017-03-30 22:38:24
● 2026-02-15 00:18:20
● 2026-06-10 02:33:06
○ 2026-06-10 15:18:40
● 2026-06-14 02:53:56
● 2026-07-19 09:38:46

○A180.210.201.2052017-03-30 → 2017-03-30 · 4 obs

○ 2016-07-19 19:22:52
● 2017-03-30 22:38:24
○ 2026-02-15 00:18:20
○ 2026-07-19 09:38:46

○A188.114.96.02026-06-10 → 2026-06-10 · 4 obs

○ 2026-06-10 02:33:06
● 2026-06-10 15:18:40
○ 2026-06-14 02:53:56
○ 2026-07-19 09:38:46

○A188.114.97.02026-06-10 → 2026-06-10 · 4 obs

○ 2026-06-10 02:33:06
● 2026-06-10 15:18:40
○ 2026-06-14 02:53:56
○ 2026-07-19 09:38:46

●A2606:4700:3030::6815:c7d2026-02-15 → 2026-07-19 · 6 obs

○ 2017-03-30 22:38:24
● 2026-02-15 00:18:20
● 2026-06-10 02:33:06
○ 2026-06-10 15:18:40
● 2026-06-14 02:53:56
● 2026-07-19 09:38:46

●A2606:4700:3032::ac43:c27e2026-07-15 → 2026-07-19 · 3 obs

○ 2026-06-15 11:52:14
● 2026-07-15 19:32:06
● 2026-07-19 09:38:46

○A2606:4700:3036::ac43:c27e2026-02-15 → 2026-06-15 · 8 obs

○ 2017-03-30 22:38:24
● 2026-02-15 00:18:20
● 2026-06-10 02:33:06
○ 2026-06-10 15:18:40
● 2026-06-14 02:53:56
● 2026-06-15 11:52:14
○ 2026-07-15 19:32:06
○ 2026-07-19 09:38:46

○A2a06:98c1:3120::2026-06-10 → 2026-06-10 · 4 obs

○ 2026-06-10 02:33:06
● 2026-06-10 15:18:40
○ 2026-06-14 02:53:56
○ 2026-07-19 09:38:46

○A2a06:98c1:3121::2026-06-10 → 2026-06-10 · 4 obs

○ 2026-06-10 02:33:06
● 2026-06-10 15:18:40
○ 2026-06-14 02:53:56
○ 2026-07-19 09:38:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
master303.net	cortney.ns.cloudflare.com, roman.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.103

NS records: cortney.ns.cloudflare.com, roman.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for master303.net (unsigned zone)

⏱️ Timing

Total: 372ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.194.126, 104.21.12.125`
AAAA	2	`2606:4700:3032::ac43:c27e, 2606:4700:3030::6815:c7d`
NS	2	`cortney.ns.cloudflare.com, roman.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cortney.ns.cloudflare.com dns.cloudflare`

Analysis

IP Addresses

master303.net resolves to four IP addresses: 104.21.12.125, 172.67.194.126, 2606:4700:3030::6815:c7d and 2606:4700:3032::ac43:c27e.

clubroyale.org, tijerykids.com, mcsmoker.de and two other host names share IP numbers with master303.net.

Name Servers

master303.net uses two name servers for its delegation: cortney.ns.cloudflare.com and roman.ns.cloudflare.com.

master303.net uses the same name servers as several other domains — among them makax1000.sbs, rgwoodworking.com, makax1000.bond and two more.

master303.net partially shares its NS delegation with several other domains, including adv-img.com, chehan.cn, expolume.com and two others.

In DNS configurations, these name servers often share authority with jill.ns.cloudflare.com, jason.ns.cloudflare.com, amalia.ns.cloudflare.com and 3 other name servers.

Hostnames that resolve to 6 IP addresses:

Hostname cortney.ns.cloudflare.com directs to 108.162.192.87, 172.64.32.87 and 173.245.58.87 along with 3 other IP addresses.

Hostname roman.ns.cloudflare.com directs to 108.162.195.103, 162.159.44.103 and 172.64.35.103 along with 3 other IP addresses.

master303.net - robtex.com

master303.net

net

Previously MX for

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`master303.net`

`net`