# 209.0.0.0/8 — IANA top-level IPv4 registry ## Who is this IP range? At the top-level `/8` registry layer, IANA designates **209.0.0.0/8** to **ARIN** and the RDAP authority maps to **arin**. This does not identify one holder or operator for every address inside the block; detailed attribution requires more-specific RDAP and BGP research. ## Registry record - **Range:** `209.0.0.0/8` - **IANA designation:** ARIN - **Registry suffix:** `arin` - **IANA status:** ALLOCATED - **Allocation/record date:** 1996-06 - **WHOIS authority:** whois.arin.net - **RDAP authority:** https://rdap.arin.net/registry - **IANA note:** None - **Checked:** 2026-07-22 ## Scope and limitations This record identifies the authoritative **top-level `/8` disposition**. It does not enumerate the many more-specific allocations, assignments, route origins, operators, services, or exact addresses inside the range. A registry designation is not proof of legal ownership, current routing, physical location, or service operation. Use more-specific RDAP, BGP, RPKI, and operator sources before making those claims. ## Source - [IANA IPv4 Address Space registry](https://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xhtml), checked 2026-07-22