Large Name Servers Resolving Few Typo Domains
Tyler Moore & Benjamin Edelman - Web Appendix to Measuring the Perpetrators and Funders of Typosquatting

This page details large name servers (those resolving at least 25,000 domains) that serve a disproportionately small number of typo domains. Any name server with less than 1.16% typo domains is below average; this table lists 14 large name servers where at most 0.5% the resolved domains are typo domains. These name servers offer evidence that it is possible to be a large name server and still avoid resolving many typo domains.

Analysis considers only typos of the most popular 3,264 .COM sites. Because other sites are also targeted by typosquatting, the reported typo counts are a lower bound on the true amount of typosquatting.

We found the listed typosquatting domains using the search process detailed in Measuring the Perpetrators and Funders of Typosquatting. We built automated systems to classify the revenue sources of each typosquatting domain, as detailed in section 3. All data was collected in July 2009.