Online Networking Tools
Find here a lot of network related online-tools to lookup all kinds of stuff. All you need is your browser to make them work.
IP Calculator - Sort and manage IP-address blocks
Sort and merge IP addresses and network blocks
More than once I've been confronted with a list of IP addresses that I wanted to sort, remove duplicates, merge into netblocks.
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).
Check IP - Find netblock owners
Query all network coordination centers (NCC) for the netblock holder of any IP-address.
Check MAC - Identify manufacturer of network interfaces
Identify the manufacturers of hardware/medium access control (MAC) addresses.
Directly copy-paste the output of popular commands (
arp -a or
ipconfig /all) into the MAC decoder.
IP Subnet Calculator - Perform various subnet calculations
The IP subnet calculator performs subnet network calculations using the IP-address, subnet mask, or subnet bits (CIDS) as input.
While subnet masks are often represented in dot-decimal form, their use becomes clearer in binary.