certusstudymanager.com - dns.ninja

`certusstudymanager.com`

DNSSEC	🔒 Signed (DS record present)
A	2606:4700:3031::6815:5ee5^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:8ce0^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.94.229^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.140.224^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`asa.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3af6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`asa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0f6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`asa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20f6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`asa.ns.cloudflare.com`
		A	108.162.192.246^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`asa.ns.cloudflare.com`
		A	172.64.32.246^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`asa.ns.cloudflare.com`
		A	173.245.58.246^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`asa.ns.cloudflare.com`
NS	`brady.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cd7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brady.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3d7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`brady.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23d7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`brady.ns.cloudflare.com`
		A	108.162.195.215^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brady.ns.cloudflare.com`
		A	162.159.44.215^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brady.ns.cloudflare.com`
		A	172.64.35.215^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brady.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.94.229, 172.67.140.224
		IPv6 hints	2606:4700:3031::6815:5ee5, 2606:4700:3033::ac43:8ce0
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=61, name=cloudflare-ech.com
SOA	`asa.ns.cloudflare.com`dns@cloudflare.com serial=2406432604

`com`

	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=1782270500

Same first word

certusstudymanager.com

DNS History

20 records (6 active, 14 former)

●NSasa.ns.cloudflare.com2026-03-26 → 2026-06-24 · 3 obs

○ 2020-01-30 17:57:58
● 2026-03-26 12:11:48
● 2026-06-24 03:23:22

●NSbrady.ns.cloudflare.com2026-03-26 → 2026-06-24 · 3 obs

○ 2020-01-30 17:57:58
● 2026-03-26 12:11:48
● 2026-06-24 03:23:22

○NSns51.domaincontrol.com2015-06-26 → 2015-11-06 · 4 obs

● 2015-06-26 06:31:20
● 2015-11-06 00:45:58
○ 2016-02-04 08:34:28
○ 2026-06-24 03:23:22

○NSns52.domaincontrol.com2015-06-26 → 2015-11-06 · 4 obs

● 2015-06-26 06:31:20
● 2015-11-06 00:45:58
○ 2016-02-04 08:34:28
○ 2026-06-24 03:23:22

○NSpdns07.domaincontrol.com2016-02-04 → 2020-01-30 · 5 obs

○ 2015-11-06 00:45:58
● 2016-02-04 08:34:28
● 2020-01-30 17:57:58
○ 2026-03-26 12:11:48
○ 2026-06-24 03:23:22

○NSpdns08.domaincontrol.com2016-02-04 → 2020-01-30 · 5 obs

○ 2015-11-06 00:45:58
● 2016-02-04 08:34:28
● 2020-01-30 17:57:58
○ 2026-03-26 12:11:48
○ 2026-06-24 03:23:22

○MXmailstore1.secureserver.net2015-06-26 → 2020-01-30 · 4 obs

● 2015-06-26 06:31:20
● 2020-01-30 17:57:58
○ 2026-03-26 12:11:48
○ 2026-06-24 03:23:22

○MXsmtp.secureserver.net2015-06-26 → 2020-01-30 · 4 obs

● 2015-06-26 06:31:20
● 2020-01-30 17:57:58
○ 2026-03-26 12:11:48
○ 2026-06-24 03:23:22

●A104.21.94.2292026-03-26 → 2026-06-24 · 3 obs

○ 2020-01-30 17:57:58
● 2026-03-26 12:11:48
● 2026-06-24 03:23:22

●A172.67.140.2242026-03-26 → 2026-06-24 · 3 obs

○ 2020-01-30 17:57:58
● 2026-03-26 12:11:48
● 2026-06-24 03:23:22

○A184.168.221.932016-02-04 → 2020-01-30 · 5 obs

○ 2015-11-06 00:45:58
● 2016-02-04 08:34:28
● 2020-01-30 17:57:58
○ 2026-03-26 12:11:48
○ 2026-06-24 03:23:22

○A188.114.96.02026-03-26 → 2026-06-24 · 2 obs

○ 2026-03-26 12:11:48
○ 2026-06-24 03:23:22

○A188.114.97.02026-03-26 → 2026-06-24 · 2 obs

○ 2026-03-26 12:11:48
○ 2026-06-24 03:23:22

●A2606:4700:3031::6815:5ee52026-06-24 → 2026-06-24 · 2 obs

○ 2026-06-14 01:42:34
● 2026-06-24 03:23:22

●A2606:4700:3033::ac43:8ce02026-06-24 → 2026-06-24 · 2 obs

○ 2026-06-14 01:42:34
● 2026-06-24 03:23:22

○A2606:4700:3034::6815:5ee52026-03-26 → 2026-06-14 · 4 obs

○ 2020-01-30 17:57:58
● 2026-03-26 12:11:48
● 2026-06-14 01:42:34
○ 2026-06-24 03:23:22

○A2606:4700:3034::ac43:8ce02026-03-26 → 2026-06-14 · 4 obs

○ 2020-01-30 17:57:58
● 2026-03-26 12:11:48
● 2026-06-14 01:42:34
○ 2026-06-24 03:23:22

○A2a06:98c1:3120::2026-03-26 → 2026-06-24 · 2 obs

○ 2026-03-26 12:11:48
○ 2026-06-24 03:23:22

○A2a06:98c1:3121::2026-03-26 → 2026-06-24 · 2 obs

○ 2026-03-26 12:11:48
○ 2026-06-24 03:23:22

○A50.63.246.1682015-06-26 → 2015-11-06 · 4 obs

● 2015-06-26 06:31:20
● 2015-11-06 00:45:58
○ 2016-02-04 08:34:28
○ 2026-06-24 03:23:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, a.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net...	-
certusstudymanager.com	asa.ns.cloudflare.com, brady.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.215

NS records: asa.ns.cloudflare.com, brady.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 243ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.94.229, 172.67.140.224`
AAAA	2	`2606:4700:3033::ac43:8ce0, 2606:4700:3031::6815:5ee5`
NS	2	`asa.ns.cloudflare.com, brady.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`asa.ns.cloudflare.com dns.cloudflare.com`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (asa.ns.cloudflare.com, asa.ns.cloudflare.com, asa.ns.cloudflare.com...)

Analysis

IP Addresses

certusstudymanager.com directs to four IP numbers, which are 104.21.94.229, 172.67.140.224, 2606:4700:3031::6815:5ee5 and 2606:4700:3033::ac43:8ce0.

Additional host names — programaparaafiliados.com.br, jerkyfaq.com, futurelane-11.sbs and two others — share IP numbers with certusstudymanager.com.

Name Servers

The NS records for certusstudymanager.com delegate to asa.ns.cloudflare.com and brady.ns.cloudflare.com.

certusstudymanager.com shares its name server setup with other domains, including nhcast.org, echiquier-nicois.org, negretefamily.com and two others.

There is at least partial name server overlap between certusstudymanager.com and other domains — koplo.net, xx3544xx.cc, badak178ee.site and two more among them.

These name servers frequently co-occur with the name servers lilyana.ns.cloudflare.com and dilbert.ns.cloudflare.com.

Host names with 6 IP numbers:

asa.ns.cloudflare.com maps to 108.162.192.246, 172.64.32.246, 173.245.58.246 and 3 additional IP addresses.

brady.ns.cloudflare.com maps to 108.162.195.215, 162.159.44.215, 172.64.35.215 and 3 additional IP addresses.