Domain report
buf.build
buf.build ranks in the top 0.34% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 7 distinct hosts observed under it.
Connectivity
- Top percentile
- 0.34%
- Hosts observed
- 7
From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means
HTTPS reachability
https://buf.build/ answered with HTTP 200.
DNS records
- A
- 34.95.71.106
- AAAA
- No records found.
- MX
- 1 aspmx.l.google.com.
- 10 alt3.aspmx.l.google.com.
- 10 alt4.aspmx.l.google.com.
- 5 alt1.aspmx.l.google.com.
- 5 alt2.aspmx.l.google.com.
- NS
- rosemary.ns.cloudflare.com.
- tony.ns.cloudflare.com.
Live preview
This site sends "X-Frame-Options: SAMEORIGIN", which blocks embedding it here.
Since buf.build can't be embedded live, this is a captured screenshot instead — a snapshot from whenever it was last rendered, not necessarily this exact moment.
Domain registration (WHOIS / RDAP)
RDAP lookup failed (HTTP 429).
SSL certificate
Certificate Transparency lookup failed (HTTP 429).
HTTP & security headers
Response
- Server
- cloudflare
- Content-Type
- text/html; charset=utf-8
- Cache-Control
- Not sent
- Content-Encoding
- Not sent
Security
- Content-Security-Policy
- base-uri 'self'; connect-src 'self' https: wss: *.g.doubleclick.net; default-src 'none'; font-src 'self' data: https:; frame-ancestors 'none'; frame-src 'self' td.doubleclick.net www.google.com www.googletagmanager.com challenges.cloudflare.com play.protovalidate.com *.hubspot.com *.hsforms.com app.termly.io; img-src 'self' https: data:; manifest-src 'self'; script-src 'self' 'unsafe-eval' 'unsafe-inline' *.buf.build play.protovalidate.com cdn.usefathom.com b-code.liadm.com/lc2.js s3-us-west-2.amazonaws.com/b2bjsstore/b/ app.identitymatrix.ai *.googletagmanager.com www.googleadservices.com *.doubleclick.net *.g.doubleclick.net www.google.com www.gstatic.com js.hs-scripts.com *.hubspot.com *.hsforms.com *.hsforms.net *.hsadspixel.net *.hscollectedforms.net *.hs-analytics.net *.hs-banner.com app.termly.io; style-src 'self' 'unsafe-inline' data: https:
- Strict-Transport-Security
- max-age=63072000; includeSubDomains
- X-Frame-Options
- SAMEORIGIN
- X-Content-Type-Options
- nosniff
- Referrer-Policy
- strict-origin-when-cross-origin
- Permissions-Policy
- geolocation=(), camera=(), microphone=(), display-capture=(), fullscreen=()
Redirect chain
- 1.
http://buf.build/HTTP 307→ https://buf.build/
- 2.
https://buf.build/HTTP 200
Meta tags
- Title
- Buf · Modern Protobuf and gRPC
- Description
- Buf is the toolchain for Protobuf, gRPC, and ConnectRPC - lint and generate code with the Buf CLI, publish and govern schemas on the Buf Schema Registry.
- Canonical
- https://buf.build/
- Robots
- Not set
- Generator
- Not set
- Open Graph title
- Buf · Modern Protobuf and gRPC
- Open Graph description
- Buf is the toolchain for Protobuf, gRPC, and ConnectRPC - lint and generate code with the Buf CLI, publish and govern schemas on the Buf Schema Registry.
- Open Graph image
- https://buf.build/images/buf-og-image-v1.png
- Open Graph type
- website
- Twitter card
- summary_large_image
- Twitter title
- Buf · Modern Protobuf and gRPC
- Twitter image
- https://buf.build/images/buf-og-image-v1.png
robots.txt
- Disallow rules (User-agent: *)
- 3
- Disallow rules (other agents)
- 3
No Sitemap declared in robots.txt.
Technology detected
Best-effort, based on a small set of well-known signals — this may be incomplete.
- Cloudflarecdn
Server: cloudflare
- HubSpotanalytics
Found "js.hs-scripts.com" in the page's HTML
Related domains
Similar connectivity
Domains ranked just above and below it in the same snapshot.