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Free Networking Tools Online

8 free Networking tools. Inspect addresses, subnets and URLs without extra software. No signup, runs in your browser.

Get network, broadcast, mask and host range from CIDR.

Break a URL into protocol, host, path, query and hash.

Convert an IPv4 address to decimal, hex and binary.

Look up HTTP status codes by number or name.

See your browser, screen, language and timezone details.

Convert CIDR prefix to subnet mask, wildcard and host count.

Find which service uses a TCP or UDP port.

Look up what A, MX, TXT, CNAME and other DNS records do.