indexo.dev

hpbn.co

.co crawl

First seen 2026-06-04 · Last seen 2026-06-04 · ok HTTP/1.1 200 332 ms crawled 2026-06-04

US · 172.67.159.21 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
High Performance Browser Networking (O'Reilly)
Description
What every web developer must know about mobile networks, protocols, and APIs provided by browser to deliver the best user experience.

Open Graph

title
High Performance Browser Networking (O'Reilly)
site name
High Performance Browser Networking
description
What every web developer must know about mobile networks, protocols, and APIs provided by browser to deliver the best user experience.

Technology

CDN
Cloudflare
Analytics
  • Google Analytics
Fonts
  • Google Fonts

Third-party hosts loaded (3)

  • fonts.googleapis.com×1
  • fonts.gstatic.com×1
  • www.google-analytics.com×1

Social

DNS records live

NS
  • art.ns.cloudflare.com
  • nina.ns.cloudflare.com
Verified for
  • Brave
  • Google

Email authentication no MX

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

WE1
from 2026-04-10 to 2026-07-09
Expires in 28 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://hpbn.co/

present
  • strict-transport-security
  • content-security-policy
  • x-frame-options
findings
  • short HSTS max-age
  • CSP allows unsafe inline scripts/styles
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
SAMEORIGIN
content-security-policy
default-src 'self'; style-src 'self' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com; script-src 'self' 'unsafe-inline' https://www.google-analytics.com data:; connect-src 'self' https://www.google-analytics.com; img-src 'self' https://www.google-analytics.com data:; report-uri https://hpbn.report-uri.io/r/default/csp/enforce
strict-transport-security
max-age=10886400; includeSubDomains; preload

Links to (6)

Linked from (1)

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