Sort IP addresses, consolidate and calculate network blocks

This calculator is designed to sort and merge multiple IP addresses/IP network blocks (consolidate adjacent and overlapping netblocks, remove duplicates, exclude another set of networks/IP's, sort the output). In a typical network security assessment I’ve been confronted more than once with a list of IP addresses that I wanted to sort, remove duplicates, and ensure that another set of IP's is excluded. So I designed this calculator to simplify such tasks:

Include/Exclude/Sort IP Networks and Addresses

Enter multiple IP-ranges or individual IP adresses to include/exclude and the calculator will evaluate the shortest possible representation of these IP addresses as network blocks. Or you can choose to generate a list of IP addresses as output of the above calculation (to feed nmap or your tool of choice).

Input Format

IP 10.1.1.120, IP-IP 10.1.1.120-10.1.1.130
IP/subnetmask 10.1.1.10/255.0.0.0, IP/subnetmask bits (CIDR) 10.1.1.10/8

Output Format

Merge adjacent and overlaping netblocks, removes duplicates and returns a sorted list of non overlapping ip-blocks.
Generate sorted list of IP addresses of the result

IP Network Address Calculator

Networks and IP-Addresses to include: # Netblocks: Begin_IP-End_IP, IP/Subnetmask, IP/Subnet_bits 10.1.1.50-10.1.1.60 10.1.1.130/255.255.255.248 10.1.1.200/28
Networks and IP-Addresses to exclude:
Load Sample	Sample 1, Sample 2, Sample 3
Output Format	List of consolidated net-blocks Generate list of IP addresses
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Test drive the calculator: run Sample 1, Sample 2, Sample 3
Use Check-IP to lookup the owner of a specific netblock
Use Subnet Mask to calculate IP subnet mask and mask bits

IP Subnet Mask Calculator Features

Subnet network calculations using IP address, subnet mask, subnet bits (CIDR Classless Inter-Domain Routing)
Consolidation of subnets into the shortest representation of network blocks
Remove IP addresses and net-blocks specified in the exclude definition
Sort IP Addresses
Generate list of IP Adresses (for nmap or other tools)