buf.build

Observed 2026-07-13T00:04:38.363424638+00:00 (15h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onGoogle

Email byGoogle Workspace

Secured byGoogle Trust Services

Also usesZoomGoogle Search ConsoleLinearStripeHubSpot

1 subdomain · saas

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat buf.build actually stands on - every host below is a signed observation

buf.build

A / AAAA

34.95.71.106

Googleserves the site

rosemary.ns.cloudflare.comtony.ns.cloudflare.com

cloudflare.comanswers its DNS

aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comalt1.aspmx.l.google.com+1 more

Google Workspacereceives its email

TLS

buf.build

Google Trust Servicesissued its certificate

DNS Records

A 1

34.95.71.106

MX 5

1aspmx.l.google.com
10alt3.aspmx.l.google.com
10alt4.aspmx.l.google.com
5alt1.aspmx.l.google.com
5alt2.aspmx.l.google.com

TXT 17

B997BD242A
MS=ms40326687
OSSRH-84676
ZOOM_verify_tNPqhddwpXox0zf4Eclck7
_gzlouu2guf68olrwwq0s94geej4ff12
anthropic-domain-verification-53edjt=MQ72mrdHu0iyqLC6hjd4sU3wZ
apple-domain-verification=uFHzTjAuMQqmvmeJ
cursor-domain-verification-nr2khg=zXW8kPNUhjs6YQg0xBjLj9pdB
google-site-verification=lycZSscFSeDJpzUM9BNZQgMEAiURSrjA12XxldAQsUA
jetbrains-domain-verification=dusacr8g1qgfavwytsodypi51

NS 2

rosemary.ns.cloudflare.com
tony.ns.cloudflare.com

SOA 1

rosemary.ns.cloudflare.com dns.cloudflare.com

TLS Certificates (3)

Common Name	Issuer	Expires
`buf.build`	C=US, O=Google Trust Services, CN=WR3	Sat, 19 Sep 2026 00:46:30 +0000
`WR3`	C=US, O=Google Trust Services LLC, CN=GTS Root R1	Tue, 20 Feb 2029 14:00:00 +0000
`GTS Root R1`	C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA	Fri, 28 Jan 2028 00:00:42 +0000

Subdomains (1)

api.buf.build

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; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for buf.build. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/buf.build">
  <img src="https://domaindrift.io/badge/buf.build.svg"
       width="300" height="64" alt="DomainDrift signed observations for buf.build">
</a>

Ed25519 Receipt

Receipt ID: 3a26c921-5fe2-4a8c-97d1-a5f963bd59bc
Output Hash: 4cc462f017891f4bfa4496fb533cac97b971635539266da72397de256dbcda34
Signature: ed25519:8edf521f06584bc18f5525d24b8ff096773b490b5ec7c5dc1d7d37459bec5d3d3411daabbe90799e7eeea159bb2f1d5213953ba63fb16aff076ed14f447fe109
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/buf.build