Q:
Changing IP Addresses
ArenaNet Communications Manager
A:
Don’t worry, Thlydd, this is common with dynamic IPs. I sometimes get a message that I’m logging in from a town about 40 miles north of me.
The thing I watch for is a log-in attempt from somewhere pretty distant to me, like a different state and certainly a different country.
You’ll probably be asked to authorize a few times through the authentication system, but with time the system “learns” your range and you’ll probably not be asked too often in the future.
The one drawback to this “dynamic IP” situation is that people may start ignoring the log-in attempt notification e-mails, thinking “Yeah, that’s just my ISP using into a new IP address” but in fact the IP shown is from a totally different location and should be viewed as an attempted account theft.
My advice: Never simply ignore the notification, but read it carefully, consider if you were actually logging in at the time shown, and if that’s the case, you can breathe easy. If that is not the case, consider changing your game and e-mail account passwords and submitting a ticket if you wish for more help.
Communications Manager
Guild & Fansite Relations; In-Game Events
ArenaNet
Many ISPs have dynamic IP addresses. The authentication system will learn the entire range over time, and then will stop asking you to ‘remember’ each one.