URL Registrable Domain Statistics
Extract registrable domains from URLs and count them locally.
Runs in your browserEvery computation happens in your browser — your data never leaves this device.
URL list
Registrable domains
Domains are output in first-seen order.
Enter URLs to see statistics
URLs: 0 · Domains: 0
What this tool does
- Merge subdomains by registrable-domain approximation.
- Count source sites.
- Deduplicate URL domains offline.
Example
Input
https://a.example.com https://b.example.com
Output
example.com 2
A lightweight last-two-label grouping is used locally; no public-suffix lookup is fetched.
Frequently asked questions
Does it fetch public suffix data?
No, it uses a deterministic local two-label rule.
Are www and api merged?
Yes, when their last two labels match.
Are URLs validated?
Yes, HTTP(S) URLs are validated strictly.
Keywords：URL主域名去重statistics