`coursenebula.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:c1da^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:3c4a^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.60.74^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.193.218^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`aliza.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2637^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aliza.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c237^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`aliza.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2237^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`aliza.ns.cloudflare.com`
		A	108.162.194.55^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aliza.ns.cloudflare.com`
		A	162.159.38.55^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aliza.ns.cloudflare.com`
		A	172.64.34.55^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aliza.ns.cloudflare.com`
NS	`cartman.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cdb^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cartman.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3db^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cartman.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23db^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cartman.ns.cloudflare.com`
		A	108.162.195.219^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cartman.ns.cloudflare.com`
		A	162.159.44.219^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cartman.ns.cloudflare.com`
		A	172.64.35.219^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cartman.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.60.74, 172.67.193.218
		IPv6 hints	2606:4700:3032::ac43:c1da, 2606:4700:3037::6815:3c4a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=107, name=cloudflare-ech.com
SOA	`aliza.ns.cloudflare.com`dns@cloudflare.com serial=2401520512

`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=1776196512

⚠️ On DNS blocklist: tif

Same first word

coursenebula.com

Similar names

buleancourse.com

DNS History

6 records (6 active, 0 former)

●NSaliza.ns.cloudflare.com2026-04-11 → 2026-04-14 · 2 obs

● 2026-04-11 13:56:36
● 2026-04-14 20:19:38

●NScartman.ns.cloudflare.com2026-04-11 → 2026-04-14 · 2 obs

● 2026-04-11 13:56:36
● 2026-04-14 20:19:38

●A104.21.60.742026-04-11 → 2026-04-14 · 2 obs

● 2026-04-11 13:56:36
● 2026-04-14 20:19:38

●A172.67.193.2182026-04-11 → 2026-04-14 · 2 obs

● 2026-04-11 13:56:36
● 2026-04-14 20:19:38

●A2606:4700:3032::ac43:c1da2026-04-11 → 2026-04-14 · 2 obs

● 2026-04-11 13:56:36
● 2026-04-14 20:19:38

●A2606:4700:3037::6815:3c4a2026-04-11 → 2026-04-14 · 2 obs

● 2026-04-11 13:56:36
● 2026-04-14 20:19:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
coursenebula.com	aliza.ns.cloudflare.com, cartman.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.219

NS records: aliza.ns.cloudflare.com, cartman.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for coursenebula.com (unsigned zone)

⏱️ Timing

Total: 315ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.193.218, 104.21.60.74`
AAAA	2	`2606:4700:3037::6815:3c4a, 2606:4700:3032::ac43:c1da`
NS	2	`aliza.ns.cloudflare.com, cartman.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`aliza.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

coursenebula.com points to four IP numbers: 2606:4700:3032::ac43:c1da, 2606:4700:3037::6815:3c4a, 104.21.60.74 and 172.67.193.218.

Other host names, for instance echelonfrontierinvestments.click, foodcomplianceinternational.com, pro44.academykiw.ru, casinoeuro-fi.net and www.webmasterblog.us share IP numbers with coursenebula.com.

Name Servers

coursenebula.com's delegation is to two name servers aliza.ns.cloudflare.com and cartman.ns.cloudflare.com.

coursenebula.com shares the same name server configuration as other domains, such as brainveltaracenter.com, mindpraxvira.sbs, flymoney.biz, insightblick.com and knowledgerknolle.com.

coursenebula.com at least partially shares its name servers with other domains, for instance vedic-arts.com, thomaelec.com, chinaedu168.com, imperialavenueinc.com and laprensaaustral.cl.

These name servers are often used together with the name servers bonnie.ns.cloudflare.com.

Host names with six IP numbers:

aliza.ns.cloudflare.com points to: 2606:4700:50::a29f:2637, 2803:f800:50::6ca2:c237, 2a06:98c1:50::ac40:2237, 108.162.194.55, 162.159.38.55 and 172.64.34.55.

cartman.ns.cloudflare.com points to: 2606:4700:58::a29f:2cdb, 2803:f800:50::6ca2:c3db, 2a06:98c1:50::ac40:23db, 108.162.195.219, 162.159.44.219 and 172.64.35.219.

coursenebula.com - robtex.com