21 Area Code
Rio de Janeiro - RJ and 26 other locations · Brazil
Country code +55 · ISO BR
Example 21 Number
A sample number from this area code, formatted three ways.
| National | International | E.164 |
|---|---|---|
| (21) 2345-6789 | +55 21 2345-6789 | +552123456789 |
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Pre-filled with a 21 sample number. Edit it and click "Try It" to see the parsed result.
Cities and Regions
Locations served by the 21 area code, according to Google's libphonenumber.
- · Rio de Janeiro - RJ
- · Nova Iguaçu - RJ
- · Niterói - RJ
- · Duque de Caxias - RJ
- · Nilópolis - RJ
- · Teresópolis - RJ
- · São Gonçalo - RJ
- · São João de Meriti - RJ
- · Magé - RJ
- · Maricá - RJ
- · Mesquita - RJ
- · Itaboraí - RJ
- · Mangaratiba - RJ
- · Itaguaí - RJ
- · Queimados - RJ
- · Belford Roxo - RJ
- · Japeri - RJ
- · Seropédica - RJ
- · Paracambi - RJ
- · Guapimirim - RJ
- · Rio Bonito - RJ
- · Tanguá - RJ
- · Rio das Ostras - RJ
- · Macaé - RJ
- · Porto Belo - RJ
- · Cachoeiras de Macacu - RJ
- · Rio de Janeiro
How to Dial Brazil Numbers
From abroad
Dial +55 followed by the national number, dropping any leading 0.
Within Brazil
Dial 0 before the local number to make a domestic call.
Frequently Asked Questions
Where is the 21 area code?
└ The 21 area code covers Rio de Janeiro - RJ in Brazil.
How do I dial a 21 number?
└ From abroad, dial +55 21 followed by the local number. Within Brazil, dial 021 before the local number.