Type an IPv4 address in any notation or an IPv6 address and see every representation, the reverse DNS name and the kind of address it is. Everything is calculated in your browser.
IP Address Converter
Convert IP addresses between dotted, decimal, hex, binary and octal; expand and compress IPv6; see the address type.
Converts as you type
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Convert any IP address
Type an IPv4 address in any notation (dotted, decimal, hex, binary, octal) or an IPv6 address to see every representation, its reverse DNS name and what kind of address it is. All conversion happens in your browser.
About the ip address converter
Convert an IP address between dotted decimal, decimal, hexadecimal, binary and octal, and expand or compress IPv6 addresses. This IP converter also shows the reverse DNS (PTR) name and tells you what kind of address it is: private, loopback, link-local, carrier-grade NAT, multicast, documentation or public.
Also searched as: IP address converter · IP to binary converter · IP to hex converter · IP to decimal converter · IPv6 expand and compress · IPv6 shortener · dotted decimal converter · IP to integer
Every way to write an IPv4 address
An IPv4 address is a 32-bit number. 192.168.1.10 is also 3232235786 in decimal, 0xC0A8010A in hexadecimal and 11000000.10101000.00000001.00001010 in binary. Browsers and some tools accept these forms, which attackers use to disguise URLs, so being able to convert them matters for security work as well as networking.
IPv6 expanded and compressed
IPv6 addresses can be written in full with eight groups of four digits, or compressed by dropping leading zeros and replacing the longest run of zero groups with a double colon. The tool follows RFC 5952, the canonical form that logs and databases should use, and shows the expanded form that ACLs and some firewalls expect.
What type of address is it?
The tool classifies the address against the reserved ranges: RFC 1918 private ranges, 100.64.0.0/10 shared address space used for carrier-grade NAT, loopback, link-local, multicast, documentation ranges and IPv6 unique local and link-local prefixes. It also produces the in-addr.arpa or ip6.arpa name used for reverse DNS.
How this tool works and how to read the results
Frequently asked questions
How do I convert an IP address to binary?
Type it in. Each of the four numbers becomes eight binary digits, and the result is shown with dots between the octets.
How do I shorten an IPv6 address?
Paste it in and use the compressed result. Leading zeros are dropped and the longest run of zero groups becomes a double colon.
What is an IPv4-mapped IPv6 address?
An address of the form ::ffff:192.0.2.1 that carries an IPv4 address inside IPv6, used by dual-stack software.
Why does 100.64.x.x not work from the internet?
It is the carrier-grade NAT range. Your provider shares one public address between many customers, so inbound connections cannot reach you.