Free network tools
Small, fast utilities we built for our own support and abuse work. They are free, run without an account, and none of them store what you type.
What is my IP
See your public IP with geolocation, ASN and our proxy/VPN verdict — checks of your own address never touch your daily quota.
Open toolCIDR subnet calculator
Expand any IPv4 CIDR block into network, broadcast, usable host range, mask and total addresses.
Open toolIP address converter
Convert IPv4 between dotted-quad, decimal, hexadecimal and binary — handy for log parsing and database storage.
Open toolWHOIS IP lookup
Query the regional registries over RDAP for owner, allocated range, country, status and abuse contact of any IP.
Open toolWHOIS domain lookup
Registrar, creation and expiry dates, status codes, nameservers, DNSSEC and abuse contact for any domain.
Open toolUser agent parser
Break a user agent string into browser, engine, OS and device, and spot obvious bot or headless signatures.
Open toolExtract IPs from text
Paste logs, headers or any text and pull out every IPv4 and IPv6 address, deduplicated and ready to export.
Open toolBulk IP lookup
Screen up to 16 addresses at once for proxy, VPN, TOR and datacenter signals with country, ASN and risk score.
Open toolNeed this in your product?
Every verdict these tools show comes from the same detection engine behind our API. Create a free key and screen traffic programmatically.