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Networking Tools

Ip range to CIDR Its a very small calculator but powerfull, indeed.
It accepts octect IPs, numerical representation of IPs or a mix between them and it will return combined network segments when possible:

Start: 127.0.0.0 

End: 127.0.0.96

Returns 127.0.0.0/26 - 127.0.0.64/27 - 127.0.0.96/32

Ip range to CIDR calculator

Ip to Country ACLs Ip to Country ACLs is able to create a country ip range based - access control list.
It support Apache, Bind9, Iptables and Postfix ACLs.
Its possible to specify incoming/outgoing¹ connections, allowed/denied¹ and you can even name¹ it.

Ip to Country ACLs
¹ if allowed by the selected software