`si.react.dev`

CNAME	`cname.vercel-dns.com`
DNSSEC	⚠️ Not signed
A	66.33.60.194^{🇺🇸 Amazon66.33.60.0/24 EC2 Prefix}
A	76.76.21.93^{🇺🇸 Amazon76.76.21.0/24 EC2 Prefix}
NS	`ns1.vercel-dns-3.com` ⭐
		A	2600:9000:5301:5c00::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-348.awsdns-43.com`
		A	205.251.193.92^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-348.awsdns-43.com`
NS	`ns2.vercel-dns-3.com`
		A	2600:9000:5302:9500::1^{🇺🇸 Amazon2600:9000:5302::/48 - CloudFront}
			PTR	`ns-661.awsdns-18.net`
		A	205.251.194.149^{🇺🇸 Amazon205.251.194.0/24 prefix}
			PTR	`ns-661.awsdns-18.net`
NS	`ns3.vercel-dns-3.com`
		A	2600:9000:5305:7400::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1396.awsdns-46.org`
		A	205.251.197.116^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1396.awsdns-46.org`
NS	`ns4.vercel-dns-3.com`
		A	2600:9000:5307:3c00::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1852.awsdns-39.co.uk`
		A	205.251.199.60^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1852.awsdns-39.co.uk`
SOA	`ns1.vercel-dns-3.com`awsdns-hostmaster@amazon.com serial=1

`react.dev`

	DNSSEC	⚠️ Not signed
	A	66.33.60.193^{🇺🇸 Amazon66.33.60.0/24 EC2 Prefix}
	A	76.76.21.241^{🇺🇸 Amazon76.76.21.0/24 EC2 Prefix}
	NS	`hattie.ns.cloudflare.com` ⭐
	NS	`junade.ns.cloudflare.com`
	TXT	`google-site-verification=a5RC7LuUuYSWBrPBwybnA2bPZSh4aYEDbYEg7O4t9l4`
	SOA	`hattie.ns.cloudflare.com`dns@cloudflare.com serial=2408848165

rank #2091 globally
rank #6 in the tld
📈 Tranco rank: #8,824

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DNS History

1 record (1 active, 0 former)

●CNAMEcname.vercel-dns.com2026-08-01 → 2026-08-12 · 2 obs

● 2026-08-01 18:12:34
● 2026-08-12 04:08:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com...	-
react.dev	junade.ns.cloudflare.com, hattie.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.172

NS records: junade.ns.cloudflare.com, hattie.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for react.dev (unsigned zone)

⏱️ Timing

Total: 1631ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`cname.vercel-dns.com`

Analysis

IP Addresses

si.react.dev directs to two IP numbers, 66.33.60.194 and 76.76.21.93

Additional host names — lev.ua, globwm.com, sebastiancrossa.com and two others — share IP numbers with si.react.dev.

Name Servers

si.react.dev has four authoritative name servers: ns1.vercel-dns-3.com, ns2.vercel-dns-3.com, ns3.vercel-dns-3.com and ns4.vercel-dns-3.com.

si.react.dev has at least partial name server overlap with other domains, such as cname.vercel-dns.com, now.sh, vercel.app and two others.

ns1.vercel-dns-3.com, ns2.vercel-dns-3.com, ns3.vercel-dns-3.com and ns4.vercel-dns-3.com all point to exactly two IP numbers each: ns1.vercel-dns-3.com → 205.251.193.92 and 2600:9000:5301:5c00::1; ns2.vercel-dns-3.com → 205.251.194.149 and 2600:9000:5302:9500::1; ns3.vercel-dns-3.com → 205.251.197.116 and 2600:9000:5305:7400::1; ns4.vercel-dns-3.com → 205.251.199.60 and 2600:9000:5307:3c00::1.

si.react.dev - robtex.com

si.react.dev

react.dev