Automated supernetting?

[Jason Vanlandingham]

I'm looking for some kind of utility that would take as input a long list of networks (preferably with inverse masks) and output a supernetted version of it. I haven't had much luck looking around. Is anyone aware of such a thing? 

[paul driver]

Hello Jason

Try this ---Subnet calculator

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Paul

[Jason Vanlandingham]

I'll give that a try when I'm on a machine where I'm admin. Do you know if you can give it a text file as input? Or at least paste in many lines?

[Jason Vanlandingham]

I'm actually looking for a supernet calculator. That doesn't do it.

[Julio E. Moisa]

Hi

Could you please provide more details? are you referring a software or web app? Usually the tools use the subnet mask. 

https://nubem.com/ip-summarization-tool/

[Jason Vanlandingham]

I can do a little find-replace magic to be able to use subnet masks instead, but this site won't work for me. I have a list of ~1000 networks, so typing each one by hand, especially having to tab between octets, isn't going to to work for me I think.

[Julio E. Moisa]

Hi

I think you can introduce them on a notepad and use the replace feature to match the info and change them, it could help you. 

[Jason Vanlandingham]

I guess a better way to say what I'm looking for is a summarization utility. Web app or executable, don't care.