`ojghtchc.courses`

DNSSEC	⚠️ Not signed
A	2606:4700:3037::6815:6ac^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:8710^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.6.172^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.135.16^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`gracie.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2690^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gracie.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c290^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`gracie.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2290^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`gracie.ns.cloudflare.com`
		A	108.162.194.144^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gracie.ns.cloudflare.com`
		A	162.159.38.144^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gracie.ns.cloudflare.com`
		A	172.64.34.144^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gracie.ns.cloudflare.com`
NS	`ignat.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c13^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ignat.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c313^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ignat.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2313^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ignat.ns.cloudflare.com`
		A	108.162.195.19^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ignat.ns.cloudflare.com`
		A	162.159.44.19^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ignat.ns.cloudflare.com`
		A	172.64.35.19^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ignat.ns.cloudflare.com`
TXT	`google-site-verification=fKEYVXjEXtfnuAZgUkJ_WhhWEcRrs82CgfjqYNj-un4`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.6.172, 172.67.135.16
		IPv6 hints	2606:4700:3037::6815:6ac, 2606:4700:3037::ac43:8710
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=62, name=cloudflare-ech.com
SOA	`gracie.ns.cloudflare.com`dns@cloudflare.com serial=2396401848

`courses`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.courses` ⭐
	NS	`b.nic.courses`
	NS	`c.nic.courses`
	NS	`x.nic.courses`
	NS	`y.nic.courses`
	NS	`z.nic.courses`
	SOA	`a.nic.courses`admin@tldns.godaddy serial=1775986718

⚠️ On DNS blocklist: tif

Same first word

ojghtchc.courses

DNS History

6 records (6 active, 0 former)

●NSgracie.ns.cloudflare.com2026-03-30 → 2026-04-12 · 2 obs

● 2026-03-30 01:57:46
● 2026-04-12 10:29:30

●NSignat.ns.cloudflare.com2026-03-30 → 2026-04-12 · 2 obs

● 2026-03-30 01:57:46
● 2026-04-12 10:29:30

●A104.21.6.1722026-03-30 → 2026-04-12 · 2 obs

● 2026-03-30 01:57:46
● 2026-04-12 10:29:30

●A172.67.135.162026-03-30 → 2026-04-12 · 2 obs

● 2026-03-30 01:57:46
● 2026-04-12 10:29:30

●A2606:4700:3037::6815:6ac2026-03-30 → 2026-04-12 · 2 obs

● 2026-03-30 01:57:46
● 2026-04-12 10:29:30

●A2606:4700:3037::ac43:87102026-03-30 → 2026-04-12 · 2 obs

● 2026-03-30 01:57:46
● 2026-04-12 10:29:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
courses	c.nic.courses, b.nic.courses, a.nic.courses, z.nic.courses...	12 records
ojghtchc.courses	ignat.ns.cloudflare.com, gracie.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.19

NS records: ignat.ns.cloudflare.com, gracie.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ojghtchc.courses (unsigned zone)

⏱️ Timing

Total: 292ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.6.172, 172.67.135.16`
AAAA	2	`2606:4700:3037::ac43:8710, 2606:4700:3037::6815:6ac`
NS	2	`gracie.ns.cloudflare.com, ignat.ns.cloudflare.com`
TXT	1	`google-site-verification=fKEYVXjEXtfnuAZ`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`gracie.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (a.nic.courses, b.nic.courses, c.nic.courses...)

Analysis

IP Addresses

ojghtchc.courses maps to four IP numbers: 2606:4700:3037::6815:6ac, 2606:4700:3037::ac43:8710, 104.21.6.172 and 172.67.135.16.

Other host names, for instance ma-ka-rohn.com, fcltaf.com.cn, lasmajadas.cl, usstringshub.com and sunculture.com share IP numbers with ojghtchc.courses.

Name Servers

Two name servers gracie.ns.cloudflare.com and ignat.ns.cloudflare.com handle delegation for ojghtchc.courses.

ojghtchc.courses uses the same name server setup as other domains, for example aranitidine.com, www-hx.com, zunrong18.com, blueblueinfo.com and zhizungroup.com.

ojghtchc.courses partially shares name servers with other domains; examples include kingscast.net, klejdotapet.pl, bocai6.com, lespe(0x74697473)loups.eu and xyjxpj.com.

These name servers are often used with the name servers raphaela.ns.cloudflare.com and glen.ns.cloudflare.com.

Host names with six IP numbers: gracie.ns.cloudflare.com points to: 2606:4700:50::a29f:2690, 2803:f800:50::6ca2:c290, 2a06:98c1:50::ac40:2290, 108.162.194.144, 162.159.38.144 and 172.64.34.144; ignat.ns.cloudflare.com points to: 2606:4700:58::a29f:2c13, 2803:f800:50::6ca2:c313, 2a06:98c1:50::ac40:2313, 108.162.195.19, 162.159.44.19 and 172.64.35.19.

ojghtchc.courses - robtex.com