That is why IPv6 subnet calculators may be useful. However, there are few subnet calculators that can handle IPv6 addresses. Here is a list of the IPv6-capable subnet calculators I have been able ...

IP Subnet Calculator (free) is a good, basic subnet calculator that shows available subnets based on IP class.

Devices also have a subnet mask, which defines which part ... 153.157.100.254 # the default gateway You can use an IP address calculator or subnet calculator to get the desired information.

Advanced Subnet Calculator (free) provides subnet calculations, does host lookups, and supplies basic whois information on the service provider for a specific IP address. Be prepared for a big ...