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Domain report

undo.io

undo.io ranks in the top 0.34% of domains by connectivity (Common Crawl, cc-main-2026-jul-aug-sep), with 5 distinct hosts observed under it.

Explore undo.io in the Web Graph

Connectivity

#448,392harmonic-centrality rank
Top percentile
0.34%
Hosts observed
5

From the Common Crawl cc-main-2026-jul-aug-sep hyperlink graph, 133,241,980 domains total. What this rank means

HTTPS reachability

200HTTP status

https://undo.io/ answered with HTTP 200.

DNS records

A
  • 104.26.13.10
  • 172.67.70.82
  • 104.26.12.10
AAAA
  • 2606:4700:20::681a:d0a
  • 2606:4700:20::681a:c0a
  • 2606:4700:20::ac43:4652
MX
  • 1 aspmx.l.google.com.
  • 10 aspmx2.googlemail.com.
  • 10 aspmx3.googlemail.com.
  • 5 alt1.aspmx.l.google.com.
  • 5 alt2.aspmx.l.google.com.
NS
  • barbara.ns.cloudflare.com.
  • jason.ns.cloudflare.com.

Live preview

Screenshot of undo.io

This site sends "X-Frame-Options: SAMEORIGIN", which blocks embedding it here.

Since undo.io 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).

How to read WHOIS and RDAP data

SSL certificate

Certificate Transparency lookup failed (HTTP 429).

How to check when a certificate expires

HTTP & security headers

Response

Server
cloudflare
Content-Type
text/html; charset=UTF-8
Cache-Control
max-age=31536000
Content-Encoding
Not sent

Security

Content-Security-Policy
Not sent
Strict-Transport-Security
max-age=15552000
X-Frame-Options
SAMEORIGIN
X-Content-Type-Options
nosniff
Referrer-Policy
same-origin
Permissions-Policy
Not sent

What each security header does

Redirect chain

  1. 1.http://undo.io/HTTP 301

    → https://undo.io/

  2. 2.https://undo.io/HTTP 200

Meta tags

Title
Undo - Runtime Context for AI
Description
Not set
Canonical
https://undo.io/
Robots
index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Generator
Powered by WPBakery Page Builder - drag and drop page builder for WordPress.
Open Graph title
Undo
Open Graph description
Not set
Open Graph image
Not set
Open Graph type
website
Twitter card
summary_large_image
Twitter title
Not set
Twitter image
Not set

robots.txt

Disallow rules (User-agent: *)
0
Disallow rules (other agents)
0

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

  • WordPresscms

    <meta name="generator"> = "Powered by WPBakery Page Builder - drag and drop page builder for WordPress."

  • Google Analyticsanalytics

    Found "googletagmanager.com/gtag/js" in the page's HTML

  • Google Tag Manageranalytics

    Found "googletagmanager.com/gtm.js" in the page's HTML

  • Cloudflare Web Analyticsanalytics

    Found "static.cloudflareinsights.com" in the page's HTML

  • 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.