Most IP addresses I run into are IPv4 addresses that look like 127.0.0.1. They’re short and fairly easy to remember, but there are only 2^32 or about 4.3 billion of them, and that’s not nearly enough to go around any more. There’s a new IP protocol called IPv6 that has 2^128 possible addresses. That’s about three hundred trillion trillion trillion addresses, and even if you only count the ones tha