@misc{17641,
  author = {Alfred Arouna and Ioana Livadariu and Roland van Rijswijk-Deij and Mattijs Jonker},
  title = {Advancing in Reverse: A Comprehensive Characterization of IN-ADDR.ARPA Deployment},
  abstract = {Reverse DNS (rDNS) is often used as a reliable data-source for critical services, such as mail, security appliances or geolocation services. 
Unlike forward DNS, rDNS remains understudied, especially from a deployment perspective.
In this paper, we take steps towards closing the gap, starting at regional Internet registries, down to network operators in the lower hierarchy. 
To this end, we use public and complementary data sources and find that around 40\% of allocated IPv4 address space has well-configured rDNS entries. 
We highlight regional differences as rDNS deployment is driven by mail and infrastructure providers in the developed world, while national Internet registries and national ISPs are drivers in the developing world.
We study the use of classless delegation and the prevalence of configuration errors breaking DNS resolution. 
Finally, we observe that multi-regional organizations such as CDNs and mail providers actively invest effort towards improving rDNS deployment.},
  year = {2023},
  journal = {AINTEC {\textquoteright}23: Proceedings of the 18th Asian Internet Engineering Conference},
  pages = {37-45},
  publisher = {ACM},
  doi = {10.1145/3630590.3630595},
}