Area Code +55-21-(20102000...20102999) located in Niterói, Rio de Janeiro (RJ), more detail is as below. Place International Dialing Code : 55 International Prefix : 00 National Prefix : 0 National Destination Code : 21 Subscriber Number From : 20102000 Subscriber Number To : 20102999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : OSTARA TELECOMUNICAÇÕES LTDA Click here to buy Brazil Area Code Database Other Information Language Code : pt (Portuguese) Country Number : 76 (Brazil) Country Code : BR (Brazil) Region Code : RJ Region Name : Rio de Janeiro City : Niterói Timezone : America/Sao_Paulo Coordinated Universal Time : -03:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : -22.8800 Longitude : -43.1000 ‹ previous : +55-21-(20101000...20101999) next › : +55-21-(20103000...20103999) Dialling Instructions For trunk calls: 0 21 20102000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 00 55 21 20102000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 20102000 ~ 20102999 (Count: 1,000) Example: +55-21-20102000 / 0055-21-20102000 (021-20102000 / 0-21-20102000) +55-21-20102001 / 0055-21-20102001 (021-20102001 / 0-21-20102001) +55-21-20102002 / 0055-21-20102002 (021-20102002 / 0-21-20102002) +55-21-20102003 / 0055-21-20102003 (021-20102003 / 0-21-20102003) +55-21-20102004 / 0055-21-20102004 (021-20102004 / 0-21-20102004) ...+55-21-xxxxxxxx / 0055-21-xxxxxxxx (021-xxxxxxxx / 0-21-xxxxxxxx) ...+55-21-20102995 / 0055-21-20102995 (021-20102995 / 0-21-20102995) +55-21-20102996 / 0055-21-20102996 (021-20102996 / 0-21-20102996) +55-21-20102997 / 0055-21-20102997 (021-20102997 / 0-21-20102997) +55-21-20102998 / 0055-21-20102998 (021-20102998 / 0-21-20102998) +55-21-20102999 / 0055-21-20102999 (021-20102999 / 0-21-20102999)