We here at AOL have noticed that there are still some people filtering 172.0.0.0/8, which is causing AOL subscribers to get blocked from some sites. As a matter of general IP route filtering hygene I thought it worth mentioning (again) to see if we can get this tamped down (or, better still, stamped out). For reference, RFC1918 20 bit block space is 172.16.0.0 - 172.31.255.255 (172.16/12 prefix) ARIN-assigned AOL block ranges that have 172 in the first octet are: 172.128.0.0/10 172.192.0.0/12 172.208.0.0/14 Please double check your filters to make sure you are not accidently blocking AOL in the non-RFC1918 space. It would be useful to pass this along to your downstreams as well. AOL is also working directly with the companies who have misconfigured firewalls where we notice problems with filters. /vijay