Our Region

ARIN’s Region

ARIN’s geographical service area includes all of the countries in the list below. The links on the right provide a list of the countries within each Regional Internet Registry’s region, and a map is available below showing all regions.

Complete List of Countries in the ARIN Region

by sector

Canada Sector
Country A 2 A 3
CANADA CA CAN
Caribbean and North Atlantic Islands Sector
Country A 2 A 3
ANGUILLA AI AIA
ANTIGUA AND BARBUDA AG ATG
BAHAMAS BS BHS
BARBADOS BB BRB
BERMUDA BM BMU
CAYMAN ISLANDS KY CYM
DOMINICA DM DMA
GRENADA GD GRD
GUADELOUPE GP GLP
JAMAICA JM JAM
MARTINIQUE MQ MTQ
MONTSERRAT MS MSR
SAINT BARTHELEMY BL BLM
SAINT KITTS AND NEVIS KN KNA
SAINT LUCIA LC LCA
ST. PIERRE AND MIQUELON PM SPM
SAINT VINCENT AND THE GRENADINES VC VCT
ST. MARTIN MF MAF
TURKS AND CAICOS ISLANDS TC TCA
VIRGIN ISLANDS (BRITISH) VG VGB
United States Sector
Country A 2 A 3
UNITED STATES US USA
PUERTO RICO PR PRI
VIRGIN ISLANDS (U.S.) VI VIR
UNITED STATES MINOR OUTLYING ISLANDS UM UMI
Outlying Areas Sector
Country A 2 A 3
ANTARCTICA AQ ATA
BOUVET ISLAND BV BVT
HEARD AND MCDONALD ISLANDS HM HMD
ST. HELENA SH SHN

Regional Internet Registry Regions

Regional Internet Registries (RIRs) are nonprofit corporations that administer and register Internet Protocol (IP) address space and Autonomous System (AS) numbers within a defined region. RIRs also work together on joint projects.

RIR Regions