`ohiofastcourse.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:2f7b^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:93a3^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.47.123^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.147.163^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`arch.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b44^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arch.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c144^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`arch.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2144^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`arch.ns.cloudflare.com`
		A	108.162.193.68^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arch.ns.cloudflare.com`
		A	172.64.33.68^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arch.ns.cloudflare.com`
		A	173.245.59.68^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`arch.ns.cloudflare.com`
NS	`lisa.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a83^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c083^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lisa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2083^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lisa.ns.cloudflare.com`
		A	108.162.192.131^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	172.64.32.131^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
		A	173.245.58.131^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lisa.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.47.123, 172.67.147.163
		IPv6 hints	2606:4700:3031::6815:2f7b, 2606:4700:3037::ac43:93a3
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=233, name=cloudflare-ech.com
SOA	`arch.ns.cloudflare.com`dns@cloudflare.com serial=2402362111

`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=1777123241

Same first word

ohiofastcourse.com

DNS History

6 records (6 active, 0 former)

●NSarch.ns.cloudflare.com2026-04-17 → 2026-04-25 · 2 obs

● 2026-04-17 01:23:28
● 2026-04-25 13:44:28

●NSlisa.ns.cloudflare.com2026-04-17 → 2026-04-25 · 2 obs

● 2026-04-17 01:23:28
● 2026-04-25 13:44:28

●A104.21.47.1232026-04-17 → 2026-04-25 · 2 obs

● 2026-04-17 01:23:28
● 2026-04-25 13:44:28

●A172.67.147.1632026-04-17 → 2026-04-25 · 2 obs

● 2026-04-17 01:23:28
● 2026-04-25 13:44:28

●A2606:4700:3031::6815:2f7b2026-04-17 → 2026-04-25 · 2 obs

● 2026-04-17 01:23:28
● 2026-04-25 13:44:28

●A2606:4700:3037::ac43:93a32026-04-17 → 2026-04-25 · 2 obs

● 2026-04-17 01:23:28
● 2026-04-25 13:44:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	m.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net, l.gtld-servers.net...	-
ohiofastcourse.com	lisa.ns.cloudflare.com, arch.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.68

NS records: lisa.ns.cloudflare.com, arch.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ohiofastcourse.com (unsigned zone)

⏱️ Timing

Total: 144ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.147.163, 104.21.47.123`
AAAA	2	`2606:4700:3031::6815:2f7b, 2606:4700:3037::ac43:93a3`
NS	2	`arch.ns.cloudflare.com, lisa.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`arch.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

Four IP numbers are pointed to by ohiofastcourse.com: 2606:4700:3031::6815:2f7b, 2606:4700:3037::ac43:93a3, 104.21.47.123 and 172.67.147.163.

other host names including thangberus.com, pafipckabkotaprobolinggo.org, milestonr.com, www.canadainaday.ca and beltourizm.by share IP numbers with ohiofastcourse.com.

Name Servers

ohiofastcourse.com is delegated to two name servers arch.ns.cloudflare.com and lisa.ns.cloudflare.com.

ohiofastcourse.com shares the same name server setup as other domains, for instance dne.co.id, dailystar.ng, met-trans.ru, flowon-tech.com and bookmemebsc.com.

ohiofastcourse.com at least partially shares name servers with other domains, for instance paintball-verhuur.nl, tandarts-leerdam.nl, jumbalia.com, han43.cn and futureiot.tech.

These name servers are commonly used alongside ken.ns.cloudflare.com and garrett.ns.cloudflare.com.

Host names with six IP numbers:

Host name arch.ns.cloudflare.com points to: 2606:4700:58::adf5:3b44, 2803:f800:50::6ca2:c144, 2a06:98c1:50::ac40:2144, 108.162.193.68, 172.64.33.68 and 173.245.59.68.

Host name lisa.ns.cloudflare.com points to: 2606:4700:50::adf5:3a83, 2803:f800:50::6ca2:c083, 2a06:98c1:50::ac40:2083, 108.162.192.131, 172.64.32.131 and 173.245.58.131.

ohiofastcourse.com - robtex.com