Wikipedia:AOL

America Online
 There were historically many problems with AOL's proxy management system. Users rapidly cycled through thousands of IP addresses, making them virtually immune to MediaWiki's IP-based block methods. To make things worse, there were so many legitimate users operating from AOL that blocking all AOL IP addresses was impractical.

The solution came in late 2006, when AOL agreed to send X-Forwarded-For headers, which identified AOL users' home IP addresses and made it possible to block users directly, bypassing AOL's proxy system. This page is no longer relevant due to this agreement.

IMPORTANT: To have an autoblock on you lifted please follow these instructions.
AOL proxy server IP Ranges
64.12.96.0/19 64.12.96.0 – 64.12.127.255
149.174.160.0/20 149.174.160.0 – 149.174.175.255
152.163.0.0/16 152.163.0.0 – 152.163.255.255
195.93.0.0/17 195.93.0.0 – 195.93.127.255
198.81.0.0/19 198.81.0.0 – 198.81.31.255
202.67.64.128/25 202.67.64.128 – 202.67.64.255
205.188.0.0/16 205.188.0.0 – 205.188.255.255
207.200.112.0/21 207.200.112.0 – 207.200.119.255
See AOL Webmaster Info page for source data

Abusive users from America Online (AOL) can be difficult to deal with. This page explains solutions to AOL users, and provides information on dealing with malicious users operating from AOL's anonymising proxy servers.