Forum:Students can't create accounts: IP address blocked

My wiki predominantly serves students who access from a shared IP address. I have a class of 18 I'm trying to get signed up and contributing now, but several are reporting that account creation is frozen because of too many accounts from the same IP. Waiting till the next day doesn't seem to have fixed it. How does this get cleared? Wareh (talk) 19:12, September 14, 2012 (UTC)
 * Best use w:c:wareh:Special:Contact on this matter.--PedroM (talk) 07:07, September 15, 2012 (UTC)