What Is An ASN?

An autonomous system number (ASN) is a unique number assigned to an autonomous system (AS) by the Internet Assigned Numbers Authority (IANA).

An AS consists of blocks of IP addresses which have a distinctly defined policy for accessing external networks and are administered by a single organization but may be made up of several operators.

Below you will find a list of public ASN's listed by country.

CountryFlagCountry CodeASN's
Afghanistan AF37
Aland Islands AX0
Albania AL13
Algeria DZ11
American Samoa AS4
Andorra AD0
Angola AO41
Anguilla AI5
Antarctica AQ0
Antigua and Barbuda AG8
Argentina AR522
Armenia AM13
Aruba AW5
Australia AU1497
Austria AT146
Azerbaijan AZ10
Bahamas BS7
Bahrain BH3
Bangladesh BD360
Barbados BB8
Belarus BY9
Belgium BE99
Belize BZ16
Benin BJ9
Bermuda BM15
Bhutan BT7
Bolivia, Plurinational State of BO26
Bonaire, Sint Eustatius and Saba BQ6
Bosnia and Herzegovina BA15
Botswana BW17
Bouvet Island BV0
Brazil BR4179
British Indian Ocean Territory IO1
Brunei Darussalam BN10
Bulgaria BG133
Burkina Faso BF7
Burundi BI9
Cabo Verde CV3
Cambodia KH58
Cameroon CM14
Canada CA1343
Cayman Islands KY16
Central African Republic CF6
Chad TD6
Chile CL193
China CN446
Christmas Island CX0
Cocos (Keeling) Islands CC0
Colombia CO133
Comoros KM1
Congo CG11
Congo, The Democratic Republic of The CD21
Cook Islands CK3
Costa Rica CR73
Cote D'ivoire CI14
Croatia HR35
Cuba CU4
Curacao CW23
Cyprus CY38
Czech Republic CZ164
Denmark DK80
Djibouti DJ4
Dominica DM5
Dominican Republic DO26
Ecuador EC64
Egypt EG61
El Salvador SV31
Equatorial Guinea GQ6
Eritrea ER1
Estonia EE25
Ethiopia ET2
Falkland Islands (Malvinas) FK1
Faroe Islands FO0
Fiji FJ6
Finland FI64
France FR386
French Guiana GF3
French Polynesia PF4
Gabon GA12
Gambia GM7
Georgia GE16
Germany DE733
Ghana GH49
Gibraltar GI5
Greece GR55
Greenland GL0
Grenada GD3
Guadeloupe GP5
Guam GU12
Guatemala GT43
Guernsey GG3
Guinea GN7
Guinea-Bissau GW3
Guyana GY6
Haiti HT8
Holy See VA1
Honduras HN49
Hong Kong HK626
Hungary HU57
Iceland IS18
India IN1353
Indonesia ID804
Iran, Islamic Republic of IR52
Iraq IQ22
Ireland IE82
Isle of Man IM7
Israel IL71
Italy IT264
Jamaica JM13
Japan JP704
Jersey JE3
Jordan JO7
Kazakhstan KZ25
Kenya KE81
Kiribati KI3
Korea, Democratic People's Republic of KP1
Korea, Republic of KR772
Kuwait KW18
Kyrgyzstan KG5
Lao People's Democratic Republic LA13
Latvia LV69
Lebanon LB24
Lesotho LS7
Liberia LR8
Libya LY5
Liechtenstein LI7
Lithuania LT39
Luxembourg LU50
Macao MO12
Macedonia, The Former Yugoslav Republic of MK12
Madagascar MG6
Malawi MW8
Malaysia MY183
Maldives MV5
Mali ML4
Malta MT9
Marshall Islands MH1
Martinique MQ3
Mauritania MR3
Mauritius MU20
Mayotte YT1
Mexico MX263
Micronesia, Federated States of FM4
Moldova, Republic of MD41
Monaco MC0
Mongolia MN36
Montenegro ME5
Montserrat MS1
Morocco MA14
Mozambique MZ21
Myanmar MM20
Namibia NA11
Nauru NR3
Nepal NP44
Netherlands NL379
New Caledonia NC11
New Zealand NZ377
Nicaragua NI30
Niger NE11
Nigeria NG128
Niue NU3
Norfolk Island NF1
Northern Mariana Islands MP1
Norway NO71
Oman OM5
Pakistan PK105
Palau PW4
Palestine, State of PS10
Panama PA89
Papua New Guinea PG16
Paraguay PY39
Peru PE41
Philippines PH279
Pitcairn PN0
Poland PL638
Portugal PT38
Puerto Rico PR82
Qatar QA8
Reunion RE4
Romania RO434
Russian Federation RU961
Rwanda RW14
Saint Barthelemy BL4
Saint Helena, Ascension and Tristan Da Cunha SH0
Saint Kitts and Nevis KN3
Saint Lucia LC3
Saint Martin (French Part) MF6
Saint Pierre and Miquelon PM1
Saint Vincent and The Grenadines VC4
Samoa WS7
San Marino SM6
Sao Tome and Principe ST2
Saudi Arabia SA35
Senegal SN6
Serbia RS31
Seychelles SC14
Sierra Leone SL10
Singapore SG440
Sint Maarten (Dutch Part) SX3
Slovakia SK38
Slovenia SI87
Solomon Islands SB5
Somalia SO14
South Africa ZA303
South Georgia and The South Sandwich Islands GS0
South Sudan SS8
Spain ES248
Sri Lanka LK15
Sudan SD8
Suriname SR5
Svalbard and Jan Mayen SJ0
Swaziland SZ7
Sweden SE222
Switzerland CH234
Syrian Arab Republic SY3
Taiwan, Province of China TW172
Tajikistan TJ4
Tanzania, United Republic of TZ68
Thailand TH325
Timor-Leste TL7
Togo TG5
Tokelau TK2
Tonga TO4
Trinidad and Tobago TT18
Tunisia TN14
Turkey TR99
Turkmenistan TM0
Turks and Caicos Islands TC4
Tuvalu TV2
Uganda UG34
Ukraine UA420
United Arab Emirates AE32
United Kingdom GB816
United States US17219
United States Minor Outlying Islands UM0
Uruguay UY28
Uzbekistan UZ13
Vanuatu VU8
Venezuela, Bolivarian Republic of VE57
Viet Nam VN215
Virgin Islands, British VG14
Virgin Islands, U.S. VI7
Wallis and Futuna WF2
Yemen YE4
Zambia ZM22
Zimbabwe ZW16