react.study - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`react.study`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:bd8e^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:9c9^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.9.201^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.189.142^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`brenda.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a4d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brenda.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c04d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`brenda.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:204d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`brenda.ns.cloudflare.com`
		A	108.162.192.77^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brenda.ns.cloudflare.com`
		A	172.64.32.77^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brenda.ns.cloudflare.com`
		A	173.245.58.77^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brenda.ns.cloudflare.com`
NS	`kianchau.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cb3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kianchau.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3b3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kianchau.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23b3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kianchau.ns.cloudflare.com`
		A	108.162.195.179^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kianchau.ns.cloudflare.com`
		A	162.159.44.179^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kianchau.ns.cloudflare.com`
		A	172.64.35.179^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kianchau.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.9.201, 172.67.189.142
		IPv6 hints	2606:4700:3030::ac43:bd8e, 2606:4700:3033::6815:9c9
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=230, name=cloudflare-ech.com
SOA	`brenda.ns.cloudflare.com`dns@cloudflare.com serial=2414319961

`study`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.study` ⭐
	NS	`b.nic.study`
	NS	`c.nic.study`
	NS	`x.nic.study`
	NS	`y.nic.study`
	NS	`z.nic.study`
	SOA	`a.nic.study`admin@tldns.godaddy serial=1789317088

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Previous names

Next names

DNS History

6 records (6 active, 0 former)

●NSbrenda.ns.cloudflare.com2026-09-09 → 2026-09-13 · 2 obs

● 2026-09-09 00:28:08
● 2026-09-13 17:16:20

●NSkianchau.ns.cloudflare.com2026-09-09 → 2026-09-13 · 2 obs

● 2026-09-09 00:28:08
● 2026-09-13 17:16:20

●A104.21.9.2012026-09-09 → 2026-09-13 · 2 obs

● 2026-09-09 00:28:08
● 2026-09-13 17:16:20

●A172.67.189.1422026-09-09 → 2026-09-13 · 2 obs

● 2026-09-09 00:28:08
● 2026-09-13 17:16:20

●A2606:4700:3030::ac43:bd8e2026-09-09 → 2026-09-13 · 2 obs

● 2026-09-09 00:28:08
● 2026-09-13 17:16:20

●A2606:4700:3033::6815:9c92026-09-09 → 2026-09-13 · 2 obs

● 2026-09-09 00:28:08
● 2026-09-13 17:16:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
study	a.nic.study, b.nic.study, c.nic.study, x.nic.study...	12 records
react.study	brenda.ns.cloudflare.com, kianchau.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.77

NS records: brenda.ns.cloudflare.com, kianchau.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for react.study (unsigned zone)

⏱️ Timing

Total: 602ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.9.201, 172.67.189.142`
AAAA	2	`2606:4700:3033::6815:9c9, 2606:4700:3030::ac43:bd8e`
NS	2	`brenda.ns.cloudflare.com, kianchau.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`brenda.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

react.study points to the four IP addresses 104.21.9.201, 172.67.189.142, 2606:4700:3030::ac43:bd8e and 2606:4700:3033::6815:9c9.

Two other host names, along with uxkzhcx.cyou, vegascas-hu-online.cyou and femmeauvolant.com, also share IP numbers with react.study.

Name Servers

react.study has two authoritative name servers — brenda.ns.cloudflare.com and kianchau.ns.cloudflare.com.

react.study shares its NS records with other domains, for example kartore.app, david-90a.workers.dev, tretraff-t2az915.pages.dev and two others.

The name servers of react.study overlap at least partially with those of other domains — among them dmitrytroshkin.com, herodw3g4heb393hfn2jef92u7o.pages.dev, mesutrmin14.workers.dev and two more.

The name servers dawn.ns.cloudflare.com, jonah.ns.cloudflare.com and hans.ns.cloudflare.com are commonly seen alongside these name servers.

DNS names with 6 IP addresses:

brenda.ns.cloudflare.com points to 108.162.192.77, 172.64.32.77, 173.245.58.77 and 3 other IP addresses.

kianchau.ns.cloudflare.com points to 108.162.195.179, 162.159.44.179, 172.64.35.179 and 3 other IP addresses.