Why are there letters in an IPv6 address?

asked 11 Nov '11, 11:22

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aid
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IPv6 addresses are long. In order to make them slightly more compact it was decided that the recommended format to write IPv6 addresses would be in hexadecimal - base 16.

Hexadecimal users the letters A to F to represent the decimal numbers 10 through 15.

This is purely about presentation as both IPv4 and IPv6 addresses are really just numbers - for IPv4 and address is a number between 0 and 4294967296 and for IPv6 an address is simply a number between 0 and 340282366920938463463374607431768211456.

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answered 11 Nov '11, 11:26

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aid
566172042
accept rate: 5%

IPv6 addresses, for convenience, are represented using hexadecimal numbers that is why one can see alphabets in IPv6 address.

Even IPv4 addresses can have alphabets if represented in hexadecimal format; E.g. 10.10.10.10 can be represented as 0A0A0A0A :)

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answered 19 Nov '11, 17:19

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Fahad Ahmed
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accept rate: 0%

IPv6 addresses, for convenience, are represented using hexadecimal numbers that is why one can see alphabets in IPv6 address.

Even IPv4 addresses can have alphabets if represented in hexadecimal format; E.g. 10.10.10.10 can be represented as 0A0A0A0A :)

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This answer is marked "community wiki".

answered 19 Nov '11, 17:19

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Fahad Ahmed
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edited 19 Nov '11, 17:20

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Asked: 11 Nov '11, 11:22

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Last updated: 19 Nov '11, 17:20

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