Tag Archive for: RIR

How to report IPv4 and IPv6 reassignments in ARIN; requirements and step-by-step instructions for creating, editing, and deleting records.

Reverse DNS, or rDNS, maps IP addresses to hostnames using PTR records. Learn how it works, why it matters, and how ARIN manages delegations

ARIN announces a 5% fee increase for 2026, new annual pricing table, and a temporary IPv6 waiver for small organizations.