On Wikipedia, we tend to not use indefinite IP blocks (there are some, but not many).
For business and organisation IPs, if we get vandalism from that IP, we'll stick it on a long-term block (usually a year) and renew that block if there's recurring vandalism when the block expires.
For business and organisation IPs, if we get vandalism from that IP, we'll stick it on a long-term block (usually a year) and renew that block if there's recurring vandalism when the block expires.