This week I presented in bdNOG 4 on “Misused top ASNs”. It was a study we at Hurricane Electric did to see how many times AS1, AS2 and AS3 appeared in global routing table between 2010 and 2015. This highlights cases where AS1, AS2 or AS3 appeared as a result of wrong prepend. My presentation is embedded below: Overall bdNOG 4 had been a great experience. It’s good to see a nice NOG community actively sharing technical know-how, sharing experiences, and much more.