The Internet is a set of interacting autonomous systems (AS) belonging to different organizations. A certain number of IP addresses 4 and/or 6 versions (IPv4, IPv6) is assigned to each autonomous system. The allocation of IP addresses is regulated by the Regional Internet Registries (RIRs). To ensure the correct routing of traffic on the Internet, each owner of an autonomous system must promptly make changes to the records of the RIR database that reflect its routing policy.

The largest regional Internet registries are:
RIR Регион
RIPE NCC Europe, Central Asia and the Middle East
ARIN North America and some Caribbean countries
APNIC East Asia and Pacific
LACNIC Latin America and most of the Caribbean countries
AFRINIC Africa
Distribution of address space resources by Regional Internet Registries (RIRs)
Date:Today
Number of IPv4 addresses
RIPE NCC
ARIN
APNIC
LACNIC
AFRINIC
Всего
Number of IPv6 /48 prefixes
RIPE NCC
ARIN
APNIC
LACNIC
AFRINIC
Всего
Number of 2 byte AS
RIPE NCC
ARIN
APNIC
LACNIC
AFRINIC
Всего
Number of 4 byte AS
RIPE NCC
ARIN
APNIC
LACNIC
AFRINIC
Всего
Total number of AS
RIPE NCC
ARIN
APNIC
LACNIC
AFRINIC
Всего