react.dev
Observed Aug 16, 2026, 18:35 UTC (3h ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation - watch it for 5-minute checks.
Up right now
Secured byLet's Encrypt
Let's EncryptAlso usesGoogle Search Console
Google Search Consoletranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat react.dev actually stands on - every host below is a signed observation
react.dev
A / AAAA
66.33.60.6776.76.21.98
unattributedserves the site
NS
hattie.ns.cloudflare.comjunade.ns.cloudflare.com
cloudflare.comanswers its DNS
TLS
react.dev
Let's Encryptissued its certificate
DNS Records
A 2
66.33.60.6776.76.21.98
TXT 1
google-site-verification=a5RC7LuUuYSWBrPBwybnA2bPZSh4aYEDbYEg7O4t9l4
NS 2
hattie.ns.cloudflare.comjunade.ns.cloudflare.com
SOA 1
hattie.ns.cloudflare.com dns.cloudflare.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
react.dev |
C=US, O=Let's Encrypt, CN=YR1 | Sat, 14 Nov 2026 01:44:44 +0000 |
YR1 |
C=US, O=ISRG, CN=Root YR | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YR |
C=US, O=Internet Security Research Group, CN=ISRG Root X1 | Thu, 02 Sep 2032 23:59:59 +0000 |
Subdomains (0)
None observed.
The proof
Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_acb2bc6ddd5b78c4- Output Hash
f6131e57c4290b55d82a2c5dc4fe41620d35dd8f2a30d86a675b9caa5018202e- Signature
ed25519:7b0eba7766fee1832a5143890ff10a5e969d225d94166bf667efb36e56935ee5f9438f01def748c0afb8c294a7a100514261d4f7fc3f471c2ffbdb2a2e79c90e- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast