Network

Network online tools, 5 in total: Subnet Calculator – CIDR, Subnet Mask & IP Range, HTTP Status Codes – Full List & Meanings, URL Parser – Break Down Any URL, MIME Type Lookup – File Extension to MIME Type, User-Agent Parser – Detect Browser, Engine, OS & Device. Everything runs in your browser — no uploads or sign-up.

All tools
Subnet Calculator – CIDR, Subnet Mask & IP RangeLocalCalculate network address, broadcast address, host range and usable hosts from a CIDR prefix or subnet mask.
HTTP Status Codes – Full List & MeaningsLocalSearch a full list of HTTP status codes with their meanings, entirely in your browser.
URL Parser – Break Down Any URLLocalParse a URL into protocol, host, port, path, query parameters and hash, and rebuild it after editing. Runs entirely in your browser.
MIME Type Lookup – File Extension to MIME TypeLocalLook up the MIME type for a file extension or find the extensions for a MIME type, covering images, audio, video, documents, fonts, archives and 3D models. Fully offline.
User-Agent Parser – Detect Browser, Engine, OS & DeviceLocalPaste any User-Agent string and instantly see the browser, rendering engine, operating system, device type and CPU architecture. Fully offline.