What is ISIC Rev 4 531?

ISIC Rev 4 531 is "Postal activities". ISIC Rev 4 code 531 covers "Postal activities" at level 2 of the ISIC Rev 4 hierarchy.

What does ISIC Rev 4 531 include?

531 Postal activities contains 1 direct subcategory: 5310 Postal activities.

How does ISIC Rev 4 531 map to other classification systems?

531 Postal activities has equivalents in BSIC (531); CAEB (531); CLANAE Rev 4 (Argentina) (531); CIIU Rev 4 (Chile) (531). These crosswalks let you translate this code between ISIC Rev 4 and 122 other classification systems.

What is the parent category of 531?

531 Postal activities sits under 531 Postal activities in the ISIC Rev 4 hierarchy.

International Standard Industrial Classification of All Economic Activities, Rev.4 - Global (UN)

531 Postal activities

ISIC Rev 4 classification code 531 covers "Postal activities" at level 2 of the ISIC Rev 4 hierarchy.

Level 21 direct subcategory122 cross-system mappings

Is your business really a 531?Classify it

Where 531 sits in the ISIC Rev 4 hierarchy

531 in other classification systems

Equivalent and related codes across 122 other systems. Click any code to see its full definition, hierarchy, and crosswalks.

BSIC

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to BSIC crosswalk page|interactive explorer

CAEB

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CAEB crosswalk page|interactive explorer

CLANAE Rev 4 (Argentina)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CLANAE Rev 4 (Argentina) crosswalk page|interactive explorer

CIIU Rev 4 (Chile)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CIIU Rev 4 (Chile) crosswalk page|interactive explorer

CIIU Rev 4 AC (Colombia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CIIU Rev 4 AC (Colombia) crosswalk page|interactive explorer

CIIU Rev 4 (Costa Rica)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CIIU Rev 4 (Costa Rica) crosswalk page|interactive explorer

CIIU Rev 4 (Dominican Republic)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CIIU Rev 4 (Dominican Republic) crosswalk page|interactive explorer

CIIU Rev 4 (Ecuador)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CIIU Rev 4 (Ecuador) crosswalk page|interactive explorer

CIIU Rev 4 (Guatemala)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CIIU Rev 4 (Guatemala) crosswalk page|interactive explorer

CIIU Rev 4 (Panama)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CIIU Rev 4 (Panama) crosswalk page|interactive explorer

CIIU Rev 4 (Peru)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CIIU Rev 4 (Peru) crosswalk page|interactive explorer

CIIU Rev 4 (Paraguay)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CIIU Rev 4 (Paraguay) crosswalk page|interactive explorer

CIIU Rev 4 (Uruguay)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CIIU Rev 4 (Uruguay) crosswalk page|interactive explorer

CIIU Rev 4 (Venezuela)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to CIIU Rev 4 (Venezuela) crosswalk page|interactive explorer

ISIC Rev 4 (UAE)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (UAE) crosswalk page|interactive explorer

ISIC Rev 4 (Afghanistan)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Afghanistan) crosswalk page|interactive explorer

ISIC Rev 4 (Antigua and Barbuda)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Antigua and Barbuda) crosswalk page|interactive explorer

ISIC Rev 4 (Angola)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Angola) crosswalk page|interactive explorer

ISIC Rev 4 (Azerbaijan)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Azerbaijan) crosswalk page|interactive explorer

ISIC Rev 4 (Barbados)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Barbados) crosswalk page|interactive explorer

ISIC Rev 4 (Burkina Faso)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Burkina Faso) crosswalk page|interactive explorer

ISIC Rev 4 (Bahrain)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Bahrain) crosswalk page|interactive explorer

ISIC Rev 4 (Burundi)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Burundi) crosswalk page|interactive explorer

ISIC Rev 4 (Benin)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Benin) crosswalk page|interactive explorer

ISIC Rev 4 (Brunei)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Brunei) crosswalk page|interactive explorer

ISIC Rev 4 (Bahamas)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Bahamas) crosswalk page|interactive explorer

ISIC Rev 4 (Bhutan)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Bhutan) crosswalk page|interactive explorer

ISIC Rev 4 (Botswana)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Botswana) crosswalk page|interactive explorer

ISIC Rev 4 (Belize)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Belize) crosswalk page|interactive explorer

ISIC Rev 4 (DRC)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (DRC) crosswalk page|interactive explorer

ISIC Rev 4 (Congo Republic)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Congo Republic) crosswalk page|interactive explorer

ISIC Rev 4 (Ivory Coast)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Ivory Coast) crosswalk page|interactive explorer

ISIC Rev 4 (Cameroon)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Cameroon) crosswalk page|interactive explorer

ISIC Rev 4 (Cuba)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Cuba) crosswalk page|interactive explorer

ISIC Rev 4 (Cabo Verde)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Cabo Verde) crosswalk page|interactive explorer

ISIC Rev 4 (Djibouti)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Djibouti) crosswalk page|interactive explorer

ISIC Rev 4 (Dominica)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Dominica) crosswalk page|interactive explorer

ISIC Rev 4 (Algeria)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Algeria) crosswalk page|interactive explorer

ISIC Rev 4 (Egypt)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Egypt) crosswalk page|interactive explorer

ISIC Rev 4 (Eritrea)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Eritrea) crosswalk page|interactive explorer

ISIC Rev 4 (Ethiopia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Ethiopia) crosswalk page|interactive explorer

ISIC Rev 4 (Fiji)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Fiji) crosswalk page|interactive explorer

ISIC Rev 4 (Gabon)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Gabon) crosswalk page|interactive explorer

ISIC Rev 4 (Grenada)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Grenada) crosswalk page|interactive explorer

ISIC Rev 4 (Ghana)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Ghana) crosswalk page|interactive explorer

ISIC Rev 4 (Gambia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Gambia) crosswalk page|interactive explorer

ISIC Rev 4 (Guinea)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Guinea) crosswalk page|interactive explorer

ISIC Rev 4 (Equatorial Guinea)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Equatorial Guinea) crosswalk page|interactive explorer

ISIC Rev 4 (Guinea-Bissau)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Guinea-Bissau) crosswalk page|interactive explorer

ISIC Rev 4 (Guyana)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Guyana) crosswalk page|interactive explorer

ISIC Rev 4 (Honduras)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Honduras) crosswalk page|interactive explorer

ISIC Rev 4 (Haiti)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Haiti) crosswalk page|interactive explorer

ISIC Rev 4 (Israel)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Israel) crosswalk page|interactive explorer

ISIC Rev 4 (Iraq)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Iraq) crosswalk page|interactive explorer

ISIC Rev 4 (Iran)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Iran) crosswalk page|interactive explorer

ISIC Rev 4 (Jamaica)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Jamaica) crosswalk page|interactive explorer

ISIC Rev 4 (Jordan)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Jordan) crosswalk page|interactive explorer

ISIC Rev 4 (Kenya)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Kenya) crosswalk page|interactive explorer

ISIC Rev 4 (Kyrgyzstan)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Kyrgyzstan) crosswalk page|interactive explorer

ISIC Rev 4 (Cambodia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Cambodia) crosswalk page|interactive explorer

ISIC Rev 4 (Comoros)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Comoros) crosswalk page|interactive explorer

ISIC Rev 4 (Saint Kitts)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Saint Kitts) crosswalk page|interactive explorer

ISIC Rev 4 (Kuwait)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Kuwait) crosswalk page|interactive explorer

ISIC Rev 4 (Kazakhstan)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Kazakhstan) crosswalk page|interactive explorer

ISIC Rev 4 (Laos)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Laos) crosswalk page|interactive explorer

ISIC Rev 4 (Lebanon)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Lebanon) crosswalk page|interactive explorer

ISIC Rev 4 (Saint Lucia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Saint Lucia) crosswalk page|interactive explorer

ISIC Rev 4 (Liberia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Liberia) crosswalk page|interactive explorer

ISIC Rev 4 (Lesotho)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Lesotho) crosswalk page|interactive explorer

ISIC Rev 4 (Libya)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Libya) crosswalk page|interactive explorer

ISIC Rev 4 (Morocco)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Morocco) crosswalk page|interactive explorer

ISIC Rev 4 (Madagascar)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Madagascar) crosswalk page|interactive explorer

ISIC Rev 4 (Mali)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Mali) crosswalk page|interactive explorer

ISIC Rev 4 (Myanmar)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Myanmar) crosswalk page|interactive explorer

ISIC Rev 4 (Mongolia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Mongolia) crosswalk page|interactive explorer

ISIC Rev 4 (Mauritania)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Mauritania) crosswalk page|interactive explorer

ISIC Rev 4 (Mauritius)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Mauritius) crosswalk page|interactive explorer

ISIC Rev 4 (Maldives)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Maldives) crosswalk page|interactive explorer

ISIC Rev 4 (Malawi)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Malawi) crosswalk page|interactive explorer

ISIC Rev 4 (Mozambique)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Mozambique) crosswalk page|interactive explorer

ISIC Rev 4 (Namibia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Namibia) crosswalk page|interactive explorer

ISIC Rev 4 (Niger)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Niger) crosswalk page|interactive explorer

ISIC Rev 4 (Nigeria)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Nigeria) crosswalk page|interactive explorer

ISIC Rev 4 (Nicaragua)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Nicaragua) crosswalk page|interactive explorer

ISIC Rev 4 (Nepal)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Nepal) crosswalk page|interactive explorer

ISIC Rev 4 (Oman)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Oman) crosswalk page|interactive explorer

ISIC Rev 4 (Papua New Guinea)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Papua New Guinea) crosswalk page|interactive explorer

ISIC Rev 4 (Palestine)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Palestine) crosswalk page|interactive explorer

ISIC Rev 4 (Qatar)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Qatar) crosswalk page|interactive explorer

ISIC Rev 4 (Rwanda)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Rwanda) crosswalk page|interactive explorer

ISIC Rev 4 (Saudi Arabia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Saudi Arabia) crosswalk page|interactive explorer

ISIC Rev 4 (Solomon Islands)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Solomon Islands) crosswalk page|interactive explorer

ISIC Rev 4 (Seychelles)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Seychelles) crosswalk page|interactive explorer

ISIC Rev 4 (Sierra Leone)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Sierra Leone) crosswalk page|interactive explorer

ISIC Rev 4 (Senegal)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Senegal) crosswalk page|interactive explorer

ISIC Rev 4 (Somalia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Somalia) crosswalk page|interactive explorer

ISIC Rev 4 (Suriname)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Suriname) crosswalk page|interactive explorer

ISIC Rev 4 (South Sudan)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (South Sudan) crosswalk page|interactive explorer

ISIC Rev 4 (El Salvador)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (El Salvador) crosswalk page|interactive explorer

ISIC Rev 4 (Syria)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Syria) crosswalk page|interactive explorer

ISIC Rev 4 (Eswatini)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Eswatini) crosswalk page|interactive explorer

ISIC Rev 4 (Chad)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Chad) crosswalk page|interactive explorer

ISIC Rev 4 (Togo)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Togo) crosswalk page|interactive explorer

ISIC Rev 4 (Tajikistan)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Tajikistan) crosswalk page|interactive explorer

ISIC Rev 4 (East Timor)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (East Timor) crosswalk page|interactive explorer

ISIC Rev 4 (Turkmenistan)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Turkmenistan) crosswalk page|interactive explorer

ISIC Rev 4 (Tunisia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Tunisia) crosswalk page|interactive explorer

ISIC Rev 4 (Tonga)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Tonga) crosswalk page|interactive explorer

ISIC Rev 4 (Trinidad and Tobago)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Trinidad and Tobago) crosswalk page|interactive explorer

ISIC Rev 4 (Tanzania)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Tanzania) crosswalk page|interactive explorer

ISIC Rev 4 (Uganda)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Uganda) crosswalk page|interactive explorer

ISIC Rev 4 (Uzbekistan)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Uzbekistan) crosswalk page|interactive explorer

ISIC Rev 4 (Saint Vincent)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Saint Vincent) crosswalk page|interactive explorer

ISIC Rev 4 (Vanuatu)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Vanuatu) crosswalk page|interactive explorer

ISIC Rev 4 (Samoa)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Samoa) crosswalk page|interactive explorer

ISIC Rev 4 (Yemen)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Yemen) crosswalk page|interactive explorer

ISIC Rev 4 (Zambia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Zambia) crosswalk page|interactive explorer

ISIC Rev 4 (Zimbabwe)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to ISIC Rev 4 (Zimbabwe) crosswalk page|interactive explorer

KBLI 2020 (Indonesia)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to KBLI 2020 (Indonesia) crosswalk page|interactive explorer

PSIC (Pakistan)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to PSIC (Pakistan) crosswalk page|interactive explorer

SLSIC (Sri Lanka)

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to SLSIC (Sri Lanka) crosswalk page|interactive explorer

VSIC 2018

1 mapping

531exact
Postal activities

ISIC Rev 4 531 to VSIC 2018 crosswalk page|interactive explorer

Subcategories of 531 Postal activities

5310Postal activities

Other ISIC Rev 4 codes under 531 Postal activities

532Courier activities

Frequently asked questions

What is ISIC Rev 4 531?: ISIC Rev 4 531 is "Postal activities". ISIC Rev 4 code 531 covers "Postal activities" at level 2 of the ISIC Rev 4 hierarchy.
What does ISIC Rev 4 531 include?: 531 Postal activities contains 1 direct subcategory: 5310 Postal activities.
How does ISIC Rev 4 531 map to other classification systems?: 531 Postal activities has equivalents in BSIC (531); CAEB (531); CLANAE Rev 4 (Argentina) (531); CIIU Rev 4 (Chile) (531). These crosswalks let you translate this code between ISIC Rev 4 and 122 other classification systems.
What is the parent category of 531?: 531 Postal activities sits under 531 Postal activities in the ISIC Rev 4 hierarchy.

Classify my business

Describe your business in plain English and get matching codes across ISIC Rev 4 and other major systems.

Interactive browser

Open 531 in the full interactive explorer with tree view, search, and drill-downs.