Network and HTTP Tools: Subnets, IP Addresses and Headers
Network tools for developers and administrators. Split an address range into subnets, convert an IP address between formats, check what a port or status code means and read raw HTTP headers.
The lookup tables show the source registry and the date they were checked.
HTTP Header ParserBreak raw HTTP headers into a readable list, with cache, cookie and type details.URL ParserSplit a web address into protocol, host, port, path, query and fragment.CIDR and Subnet CalculatorWork out the network, broadcast, mask and usable range of an IPv4 subnet.HTTP Status Codes ReferenceSearch the common HTTP status codes, with a plain explanation of each and when to use it.User Agent ParserRead a user agent string to find the browser, its version, the operating system and the device.IP Address ConverterConvert an IPv4 or IPv6 address between dotted, decimal, hex, binary, compressed and expanded forms.IP Range to CIDR ConverterTurn a start and end address into the smallest list of CIDR blocks that covers exactly that range.MAC Address FormatterReformat MAC addresses with colons, hyphens, dots or no separator, upper or lower case, and see the details.MIME Type LookupFind the media type for a file extension, or the extensions for a media type, with its registry status.Common Ports LookupLook up which service uses a network port, or which port a service uses, from a checked list of about a hundred.
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