hello,

i need to clean a list of ipīs.

the list looks something like this:

677.37.198.243:3128
677.37.198.244:3128
132.72.23.10:3128
133.43.189.20:8080
134.2.205.228:3127
140.112.107.80:3124
140.112.107.80:3128

i want to auto-delete every domain except the top level domains.
so if the first two sets of numbers...
ie.
677.37.198.243:3128
677.37.198.244:3128
677.37.198.245:3128

...are the same, i want to delete every domain except of one.

677.37.198.243:3128

i hope someone can help me out

greetz
frank