11. The method of claim 10 further comprising storing the client identification information in a database wherein the database comprises a database for use in blocking domain names.
10. A method implemented at least in part by a computing device, the method comprising: providing a typographically erroneous domain name; tracing the domain name wherein the tracing comprises entering the domain name as part of a URL and recording one or more subsequent URLs; identifying a domain parking service for the domain name based at least in part on information in one of the recorded URLs; determining client identification information in at least one of the recorded URLs wherein the client identification information identifies a customer of the domain parking service, wherein the client identification information is a particular client identifier extracted from a Client ID (cid) field of the final destination URL; and blocking one or more domain names based at least in part on the client identification information.