Skip to content

Percival's Toolkit Meet Percival, your toolkit's resident owl

Home

Speed Test Latency Checker

DNS Lookup Is It Down IP Geolocation Domain & IP Lookup Master Lookup CAA Checker

Subnet Calculator CIDR / Mask Converter Duration Converter Cron Explainer IPv6 Tools Preshared Key Generator

Blacklist Check SPF / DMARC Checker DKIM Checker Header Analyzer Reverse DNS / PTR

Password Breach Check Hash Identifier Subdomain Finder MAC Address Analyzer

JSON Formatter Base64 / URL Timestamp Converter JWT Decoder Regex Tester URL Parser HTTP Status Codes Password Generator Hash Generator User-Agent Parser

Get In Touch

Talk to the owl

Bug reports, broken results, tool ideas: one inbox, no ticket system.

Percival

© 2026 Percival's Toolkit, run by an owl who hunts packets so you don't have to.

Toolkit Contact Privacy Donate