Measuring the Resolution Resiliency of Second-Level Domain Name

Abstract

DNS resiliency concerns are growing. It is important to investigate the factors that can cause DNS resolution failure, including DDoS attack, BGP operation, DNS server operation, domain name registrar operation, etc. We discuss the metrics to measure resolution resiliency of second-level domain name, and do the resiliency measurement on some famous internet service. We describe a stub resolver cache proposal to mitigate the domain resolution failure, defense against DDoS attack.