Help me, redirect by IP

I want make a web like google, when visitor comfrom ip range
203.123.0.0 to 203.123.31.26 and 67.27.0.22 to 67.27.27.89 , homepage will automatically direct to abc.com.vn/abc.htm ( i mean abc.com.vn/abc.htm is my domain language by vietnamese) and other ip will automatically direct to abc.com.vn (abc.com.vn is my english website).

I use this code:

But now i want more ip range, like this:

I think it hard to do, so can anyone can did it in php?
I mean in index.php make a redirect, when visitor from the above ip then redirect to abc.com.vn/abc.htm
And other, will redirect to abc.com.vn/home.php

 

I can code this for you, but it will cost you. PM me if interested.

 

I am Vietnamese, free for you.

 

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