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IPv4 / IPv6 Converter

See an IP address in every form, IPv4 and IPv6.

IPv4, IPv6, or a whole number.

Forms of this address

IPv4

192.168.1.10

Private (RFC 1918)

Integer
3232235786
Hex
0xC0A8010A
Binary
11000000.​10101000.​00000001.​00001010
IPv4-mapped IPv6
::ffff:192.168.1.10
IPv4-mapped IPv6 (hex)
::ffff:c0a8:10a
Reverse DNS
10.​1.​168.​192.​in-addr.​arpa

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Questions

Why would an IP address be written as a number?

Databases and logs often store IPv4 addresses as a single 32-bit integer: 192.168.1.10 is 3232235786. Type either form to get the other.

What is the short form of an IPv6 address?

RFC 5952 defines one canonical way to write each address: lower case, no leading zeros in a group, and the longest run of zero groups replaced by ::. 2001:0db8:0000:0000:0000:0000:0000:0001 becomes 2001:db8::1.

What is an IPv4-mapped IPv6 address?

::ffff:192.168.1.10 is how software that speaks only IPv6 represents an IPv4 address. You’ll see it in logs of servers that listen on both.

Is it free? Do I need an account?

It is free to use and there is nothing to sign up for. There are no watermarks and no daily limits.

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