Work out if an IP address is in an ISP's IP range

by **jaycook** » Fri Jan 31, 2003 7:27 am

Hi,

How can I work out if an IP address is in an ISP's IP range (e.g. 213.226.0.0 - 213.226.15.255). Does anyone know a simple way of doing this or some example code. Thanks for looking!

by **Joan Garnet** » Sat Feb 01, 2003 2:27 pm

You can use

Code: Select all: $ip = getenv(REMOTE_ADDR);

and make whatever you want with that IP

by **jaycook** » Mon Feb 03, 2003 1:27 am

Thanks but I already know how to get the IP address. What I need to know is how to work out if the IP address is between a specific ISP's IP range e.g. 213.226.1.1 is in the IP range 213.226.0.0 - 213.226.15.255.

Can it be done with a regular expression maybe?

by **Oleg Butuzov** » Mon Feb 03, 2003 1:52 am

you can separete values in the IP an comere that in the circle...

by **jaycook** » Tue Feb 04, 2003 1:28 am

Sorry but i'm not entirely sure what you mean. Do you have any example code?

by **Oleg Butuzov** » Tue Feb 04, 2003 2:23 am

exemple of code? no! who about algoritm?

123.123.133.133 - this is IP

separete values whith explode or split function

analize values in the loop.

Work out if an IP address is in an ISP's IP range

Work out if an IP address is in an ISP's IP range

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