`suitableemerald.courses`

DNSSEC	⚠️ Not signed
A	104.21.16.60^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.166.168^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`jakub.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c55^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jakub.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c355^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jakub.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2355^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jakub.ns.cloudflare.com`
		A	108.162.195.85^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jakub.ns.cloudflare.com`
		A	162.159.44.85^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jakub.ns.cloudflare.com`
		A	172.64.35.85^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jakub.ns.cloudflare.com`
NS	`tani.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ae0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tani.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0e0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tani.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20e0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tani.ns.cloudflare.com`
		A	108.162.192.224^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tani.ns.cloudflare.com`
		A	172.64.32.224^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tani.ns.cloudflare.com`
		A	173.245.58.224^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tani.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.16.60, 172.67.166.168
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=151, name=cloudflare-ech.com
SOA	`jakub.ns.cloudflare.com`dns@cloudflare.com serial=2409448753

`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=1785765277

⚠️ On DNS blocklist: pro, pro.mini, pro.plus, pro.plus.mini, tif, tif.medium, tif.mini, ultimate, ultimate.mini
⚠️ On DNS blocklist: spam-tlds

Subdomains

www.suitableemerald.courses

Same first word

suitableemerald.courses

DNS History

4 records (4 active, 0 former)

●NSjakub.ns.cloudflare.com2026-07-30 → 2026-08-03 · 2 obs

● 2026-07-30 20:53:32
● 2026-08-03 14:39:38

●NStani.ns.cloudflare.com2026-07-30 → 2026-08-03 · 2 obs

● 2026-07-30 20:53:32
● 2026-08-03 14:39:38

●A104.21.16.602026-07-30 → 2026-08-03 · 2 obs

● 2026-07-30 20:53:32
● 2026-08-03 14:39:38

●A172.67.166.1682026-07-30 → 2026-08-03 · 2 obs

● 2026-07-30 20:53:32
● 2026-08-03 14:39:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
courses	a.nic.courses, b.nic.courses, c.nic.courses, x.nic.courses...	12 records
suitableemerald.courses	tani.ns.cloudflare.com, jakub.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.224

NS records: tani.ns.cloudflare.com, jakub.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for suitableemerald.courses (unsigned zone)

⏱️ Timing

Total: 341ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.16.60, 172.67.166.168`
NS	2	`jakub.ns.cloudflare.com, tani.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`jakub.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

suitableemerald.courses serves as the parent of www.suitableemerald.courses.

IP Addresses

suitableemerald.courses directs to two IP numbers, 104.21.16.60 and 172.67.166.168

Two other host names, along with edbotrade.com, www.boardworkssurf.com and boardworkssurf.com, also share IP numbers with suitableemerald.courses.

Name Servers

suitableemerald.courses is served by two delegated name servers, jakub.ns.cloudflare.com and tani.ns.cloudflare.com.

suitableemerald.courses shares its NS records with other domains, for example nicsgames.com, tintinnya.com, mann.biz and two others.

suitableemerald.courses has at least partial name server overlap with other domains, such as atfx-na.com, dashboard-layerzero.network, hexoriabot3-2.digital and two others.

It is common to find these name servers paired with the name servers hattie.ns.cloudflare.com.

DNS names with 6 IP addresses:

jakub.ns.cloudflare.com carries IP addresses 108.162.195.85, 162.159.44.85 and 172.64.35.85, with 3 other addresses beyond those.

tani.ns.cloudflare.com carries IP addresses 108.162.192.224, 172.64.32.224 and 173.245.58.224, with 3 other addresses beyond those.

suitableemerald.courses - robtex.com