`courseoptimizers.shop`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:40b6^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:9a4c^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.64.182^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.154.76^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`max.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b84^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`max.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c184^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`max.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2184^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`max.ns.cloudflare.com`
		A	108.162.193.132^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`max.ns.cloudflare.com`
		A	172.64.33.132^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`max.ns.cloudflare.com`
		A	173.245.59.132^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`max.ns.cloudflare.com`
NS	`melina.ns.cloudflare.com`
		A	2606:4700:50::a29f:26b8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2b8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`melina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22b8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`melina.ns.cloudflare.com`
		A	108.162.194.184^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melina.ns.cloudflare.com`
		A	162.159.38.184^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melina.ns.cloudflare.com`
		A	172.64.34.184^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`melina.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.64.182, 172.67.154.76
		IPv6 hints	2606:4700:3031::6815:40b6, 2606:4700:3037::ac43:9a4c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=234, name=cloudflare-ech.com
SOA	`max.ns.cloudflare.com`dns@cloudflare.com serial=2409954144

`shop`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gmoregistry.net` ⭐
	NS	`b.gmoregistry.net`
	NS	`k.gmoregistry.net`
	NS	`l.gmoregistry.net`
	SOA	`a.gmoregistry.net`noc@gmoregistry.net serial=1785521510

⚠️ On DNS blocklist: tif

Same first word

courseoptimizers.shop

DNS History

10 records (6 active, 4 former)

●NSmax.ns.cloudflare.com2026-07-25 → 2026-07-31 · 2 obs

● 2026-07-25 03:58:44
● 2026-07-31 18:50:10

●NSmelina.ns.cloudflare.com2026-07-25 → 2026-07-31 · 2 obs

● 2026-07-25 03:58:44
● 2026-07-31 18:50:10

●A104.21.64.1822026-07-31 → 2026-07-31 · 3 obs

○ 2026-07-25 03:58:44
● 2026-07-31 18:50:08
● 2026-07-31 18:50:10

●A172.67.154.762026-07-31 → 2026-07-31 · 3 obs

○ 2026-07-25 03:58:44
● 2026-07-31 18:50:08
● 2026-07-31 18:50:10

○A188.114.96.42026-07-25 → 2026-07-25 · 3 obs

● 2026-07-25 03:58:44
○ 2026-07-31 18:50:08
○ 2026-07-31 18:50:10

○A188.114.97.42026-07-25 → 2026-07-25 · 3 obs

● 2026-07-25 03:58:44
○ 2026-07-31 18:50:08
○ 2026-07-31 18:50:10

●A2606:4700:3031::6815:40b62026-07-31 → 2026-07-31 · 3 obs

○ 2026-07-25 03:58:44
● 2026-07-31 18:50:08
● 2026-07-31 18:50:10

●A2606:4700:3037::ac43:9a4c2026-07-31 → 2026-07-31 · 3 obs

○ 2026-07-25 03:58:44
● 2026-07-31 18:50:08
● 2026-07-31 18:50:10

○A2a06:98c1:3120::2026-07-25 → 2026-07-25 · 3 obs

● 2026-07-25 03:58:44
○ 2026-07-31 18:50:08
○ 2026-07-31 18:50:10

○A2a06:98c1:3121::2026-07-25 → 2026-07-25 · 3 obs

● 2026-07-25 03:58:44
○ 2026-07-31 18:50:08
○ 2026-07-31 18:50:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
shop	k.gmoregistry.net, l.gmoregistry.net, a.gmoregistry.net, b.gmoregistry.net	-
courseoptimizers.shop	max.ns.cloudflare.com, melina.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.132

NS records: max.ns.cloudflare.com, melina.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for courseoptimizers.shop (unsigned zone)

⏱️ Timing

Total: 505ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.64.182, 172.67.154.76`
AAAA	2	`2606:4700:3031::6815:40b6, 2606:4700:3037::ac43:9a4c`
NS	2	`max.ns.cloudflare.com, melina.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`max.ns.cloudflare.com dns.cloudflare.com`

Analysis

IP Addresses

courseoptimizers.shop has four IP addresses: 104.21.64.182, 172.67.154.76, 2606:4700:3031::6815:40b6 and 2606:4700:3037::ac43:9a4c.

xuyangfilm.com, newsonline.ro, gaussmeter.co.uk plus two other host names have IP numbers in common with courseoptimizers.shop.

Name Servers

DNS delegation for courseoptimizers.shop points to two name servers: max.ns.cloudflare.com and melina.ns.cloudflare.com.

The name server configuration of courseoptimizers.shop is shared with other domains, for instance ubyouth.com, podcraftgenius.shop, podcastbizguru.shop and two others.

courseoptimizers.shop shares at least some of its name servers with other domains, including vavada-registration.com, beckersbooks.com, elitroyalgirisi.com and two others.

These name servers are frequently seen alongside the name servers mimi.ns.cloudflare.com.

Hosts with 6 IP addresses each:

max.ns.cloudflare.com has IP addresses 108.162.193.132, 172.64.33.132 and 173.245.59.132, plus 3 other.

melina.ns.cloudflare.com has IP addresses 108.162.194.184, 162.159.38.184 and 172.64.34.184, plus 3 other.

courseoptimizers.shop - robtex.com