Manage IP Addresses & ASNs MiLACNIC (Login) Whois LACNIC's WHOIS service allows querying information on the Autonomous System Numbers (ASNs) and IP addresses assigned by LACNIC. Reverse DNS Resolution Recovery/Returning IP & ASN Transferring IP Addresses Resource Certification (RPKI) Internet Routing Registry (IRR) IP Geolocation Legacy Resources Automating & Integrating IP Management