This page gives the list of IPv4 addresses delegated in British Indian Ocean Territory (IO) by Regional Internet Registries (RIRs), according to RIRs delegations files: AFRINIC (Africa), APNIC (Asia-Pacific), ARIN (North America), LACNIC (Latin America and the Caribbean) and RIPE NCC (Europe, the Middle East and parts of Central Asia).

Most IPv4 delegations correspond to a single /PrefixLength address range.

Some IPv4 delegations correspond to several consecutive /PrefixLength ranges with the same holder, aggregated together in a single delegation (for example a /23 and the following /24 aggregated in a delegation with 768 addresses). In this case, colum Prefix in the following table contains the keyword Aggreg, and the entry in the text file appears as FirstAddress-LastAddress.

You can download the list of IPv4 addresses as a text file.