happytails.ai

IP allowlist overlap checker

Paste a JSON array of IPv4 or IPv6 CIDR strings.

Process up to 500000 input characters and 20000 records locally. Reports export completely up to 40 million characters and 500000 CSV records. Analysis is local with a 10-second timeout. Preview tables show the first 200 rows; your data is not uploaded. Up to 500,000 characters. Review the settings before running.

Your result

Report a problem or share an idea.

How to use IP allowlist overlap checker
  1. Paste text or JSON in the documented format.
  2. Review the bounded report and explicit assumptions.
  3. Download complete JSON or CSV.

Useful next steps

DNS name length checkerDNS zone diffHTTP cache policy analyzer

Know the interpretation limits

Paste a JSON array of IPv4 or IPv6 CIDR strings. Network containment identifies duplicate and shadowed entries within one address family; policy order is not inferred.

Keep the complete report

Search and sort apply to the first 200 rows. Download JSON or CSV for every row and the assumptions.