indexo.dev

proofcheck.io

.io crawl

First seen 2026-04-12 · Last seen 2026-05-19 · ok HTTP/1.1 200 1865 ms crawled 2026-05-04

US · 99.83.190.102 · AS16509 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
Proofcheck
Description
Our AI proofreading workflow platform helps you catch embarrassing errors — so that your audience doesn't. Sign up for free beta access.
Language
en
Canonical
https://proofcheck.io

Open Graph

title
Proofcheck
description
Our AI proofreading workflow platform helps you catch embarrassing errors — so that your audience doesn't. Sign up for free beta access.

Technology

CDN
Cloudflare
Analytics
  • Google Tag Manager
Fonts
  • Adobe Fonts
  • Google Fonts
Third-party hosts loaded (9)
  • cdn.prod.website-files.com×37
  • ajax.googleapis.com×1
  • assets.website-files.com×1
  • cdn.jsdelivr.net×1
  • d3e54v103j8qbb.cloudfront.net×1
  • fonts.googleapis.com×1
  • fonts.gstatic.com×1
  • use.typekit.net×1
  • www.googletagmanager.com×1

Social

DNS records live

NS
  • dns1.p07.nsone.net
  • dns2.p07.nsone.net
  • dns3.p07.nsone.net
  • dns4.p07.nsone.net
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
TXT
Show 4 TXT records
  • proxy-ssl.webflow.com
  • v=spf1 include:_spf.firebasemail.com ~all
  • v=spf1 include:_spf.google.com ~all
  • firebase=proofcheck-b9ec8
Verified for
  • Google

Certificate (current)

R13
from 2026-03-15 to 2026-06-13
Expires in 23 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://www.proofcheck.io/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=31536000

Links to (4)

Linked from (2)