`certifiedcourses.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:4f9d^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::ac43:9277^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.79.157^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.146.119^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`bryce.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c89^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bryce.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c389^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bryce.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2389^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bryce.ns.cloudflare.com`
		A	108.162.195.137^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bryce.ns.cloudflare.com`
		A	162.159.44.137^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bryce.ns.cloudflare.com`
		A	172.64.35.137^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bryce.ns.cloudflare.com`
NS	`lana.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ab6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lana.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0b6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lana.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20b6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lana.ns.cloudflare.com`
		A	108.162.192.182^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lana.ns.cloudflare.com`
		A	172.64.32.182^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lana.ns.cloudflare.com`
		A	173.245.58.182^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lana.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.79.157, 172.67.146.119
		IPv6	2606:4700:3033::6815:4f9d, 2606:4700:3034::ac43:9277
SOA	`bryce.ns.cloudflare.com`dns@cloudflare.com serial=2397184231

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1773551953

Same first word

certifiedcourses.org

DNS History

18 records (6 active, 12 former)

●NSbryce.ns.cloudflare.com2026-02-18 → 2026-03-24 · 3 obs

○ 2017-08-28 01:21:54
● 2026-02-18 12:24:10
● 2026-03-24 13:39:08

●NSlana.ns.cloudflare.com2026-02-18 → 2026-03-24 · 3 obs

○ 2017-08-28 01:21:54
● 2026-02-18 12:24:10
● 2026-03-24 13:39:08

○NSns-us.1and1-dns.com2016-04-18 → 2017-08-28 · 4 obs

● 2016-04-18 09:50:52
● 2017-08-28 01:21:54
○ 2026-02-18 12:24:10
○ 2026-03-24 13:39:08

○NSns-us.1and1-dns.de2016-04-18 → 2017-08-28 · 4 obs

● 2016-04-18 09:50:52
● 2017-08-28 01:21:54
○ 2026-02-18 12:24:10
○ 2026-03-24 13:39:08

○NSns-us.1and1-dns.org2016-04-18 → 2017-08-28 · 4 obs

● 2016-04-18 09:50:52
● 2017-08-28 01:21:54
○ 2026-02-18 12:24:10
○ 2026-03-24 13:39:08

○NSns-us.1and1-dns.us2016-04-18 → 2017-08-28 · 4 obs

● 2016-04-18 09:50:52
● 2017-08-28 01:21:54
○ 2026-02-18 12:24:10
○ 2026-03-24 13:39:08

○MXmx00.1and1.com2016-04-18 → 2017-08-28 · 4 obs

● 2016-04-18 09:50:52
● 2017-08-28 01:21:54
○ 2026-02-18 12:24:10
○ 2026-03-24 13:39:08

○MXmx01.1and1.com2016-04-18 → 2017-08-28 · 4 obs

● 2016-04-18 09:50:52
● 2017-08-28 01:21:54
○ 2026-02-18 12:24:10
○ 2026-03-24 13:39:08

●A104.21.79.1572026-02-18 → 2026-03-24 · 9 obs

○ 2017-08-28 01:21:54
● 2026-02-18 12:24:10
● 2026-03-04 14:03:52
○ 2026-03-06 16:57:24
● 2026-03-13 01:47:38
● 2026-03-14 08:26:36
○ 2026-03-22 05:15:38
● 2026-03-24 11:51:52
● 2026-03-24 13:39:08

○A172.64.80.12026-03-06 → 2026-03-22 · 7 obs

○ 2026-03-04 14:03:52
● 2026-03-06 16:57:24
○ 2026-03-13 01:47:38
○ 2026-03-14 08:26:36
● 2026-03-22 05:15:38
○ 2026-03-24 11:51:52
○ 2026-03-24 13:39:08

●A172.67.146.1192026-02-18 → 2026-03-24 · 9 obs

○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-04 → 2026-03-06 · 7 obs

○ 2026-03-03 12:11:18
● 2026-03-04 12:03:44
○ 2026-03-04 13:12:50
○ 2026-03-04 14:03:52
● 2026-03-06 16:57:24
○ 2026-03-13 01:47:38
○ 2026-03-24 13:39:08

●A2606:4700:3033::6815:4f9d2026-02-18 → 2026-03-24 · 9 obs

○ 2017-08-28 01:21:54
● 2026-02-18 12:24:10
● 2026-03-03 12:11:18
○ 2026-03-04 12:03:44
● 2026-03-04 13:12:50
● 2026-03-04 14:03:52
○ 2026-03-06 16:57:24
● 2026-03-13 01:47:38
● 2026-03-24 13:39:08

●A2606:4700:3034::ac43:92772026-02-18 → 2026-03-24 · 9 obs

○A2607:f1c0:1000:901a:ab34:aa1c:7e9b:c8052016-04-18 → 2016-04-18 · 3 obs

● 2016-04-18 09:50:52
○ 2016-12-07 12:53:22
○ 2026-03-24 13:39:08

○A2607:f1c0:100f:f000::21f2016-12-07 → 2017-08-28 · 5 obs

○ 2016-04-18 09:50:52
● 2016-12-07 12:53:22
● 2017-08-28 01:21:54
○ 2026-02-18 12:24:10
○ 2026-03-24 13:39:08

○A74.208.108.1862016-04-18 → 2016-04-18 · 3 obs

● 2016-04-18 09:50:52
○ 2016-12-07 12:53:22
○ 2026-03-24 13:39:08

○A74.208.236.2142016-12-07 → 2017-08-28 · 5 obs

○ 2016-04-18 09:50:52
● 2016-12-07 12:53:22
● 2017-08-28 01:21:54
○ 2026-02-18 12:24:10
○ 2026-03-24 13:39:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
certifiedcourses.org	bryce.ns.cloudflare.com, lana.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.182

NS records: bryce.ns.cloudflare.com, lana.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for certifiedcourses.org (unsigned zone)

⏱️ Timing

Total: 479ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.146.119, 104.21.79.157`
AAAA	2	`2606:4700:3033::6815:4f9d, 2606:4700:3034::ac43:9277`
NS	2	`bryce.ns.cloudflare.com, lana.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`bryce.ns.cloudflare.com dns.cloudflare.c`

Analysis

IP Addresses

certifiedcourses.org points to four IP numbers: 2606:4700:3033::6815:4f9d, 2606:4700:3034::ac43:9277, 104.21.79.157 and 172.67.146.119.

Other host names including pti.com.mm, m8v8m.xyz, revereamerica.org, www.mallandrinhas.net and (0x736578)920.info share IP numbers with certifiedcourses.org.

Name Servers

certifiedcourses.org's delegation uses two name servers, bryce.ns.cloudflare.com and lana.ns.cloudflare.com.

certifiedcourses.org shares the same name server setup as other domains, for example cooyofrai.sa.com, aljoker.net, exquisiteautosales.ca, tfcracks.com and dark.systems.

certifiedcourses.org at least partially shares name servers with other domains, including jav(0x706f726e).vip, wfuk.com, sdn10pedungan.sch.id, eliasfr.irish and allelcoelec.ph.

These name servers are commonly used with gwen.ns.cloudflare.com and bradley.ns.cloudflare.com.

Host names with six IP numbers:

bryce.ns.cloudflare.com points to: 2606:4700:58::a29f:2c89, 2803:f800:50::6ca2:c389, 2a06:98c1:50::ac40:2389, 108.162.195.137, 162.159.44.137 and 172.64.35.137.

lana.ns.cloudflare.com points to: 2606:4700:50::adf5:3ab6, 2803:f800:50::6ca2:c0b6, 2a06:98c1:50::ac40:20b6, 108.162.192.182, 172.64.32.182 and 173.245.58.182.

certifiedcourses.org - robtex.com