Area Code +53-21-(000000...999999) located in Guantánamo, more detail is as below. Place International Dialing Code : 53 International Prefix : 119 National Prefix : 0 National Destination Code : 21 Subscriber Number From : 000000 Subscriber Number To : 999999 National Destination Code Length : 2 Uses National Destination Code : Yes National Significant Number Length : 8 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : ETECSA Click here to buy Cuba Area Code Database Other Information Language Code : es (Spanish) Country Number : 192 (Cuba) Country Code : CU (Cuba) City : Guantánamo Timezone : America/Havana Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 8 Latitude : 20.1500 Longitude : -75.2100 next › : +53-22-(000000...999999) Dialling Instructions For trunk calls: 0 21 000000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 119 53 21 000000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 000000 ~ 999999 (Count: 1,000,000) Example: +53-21-000000 / 11953-21-000000 (021-000000 / 0-21-000000) +53-21-000001 / 11953-21-000001 (021-000001 / 0-21-000001) +53-21-000002 / 11953-21-000002 (021-000002 / 0-21-000002) +53-21-000003 / 11953-21-000003 (021-000003 / 0-21-000003) +53-21-000004 / 11953-21-000004 (021-000004 / 0-21-000004) ...+53-21-xxxxxx / 11953-21-xxxxxx (021-xxxxxx / 0-21-xxxxxx) ...+53-21-999995 / 11953-21-999995 (021-999995 / 0-21-999995) +53-21-999996 / 11953-21-999996 (021-999996 / 0-21-999996) +53-21-999997 / 11953-21-999997 (021-999997 / 0-21-999997) +53-21-999998 / 11953-21-999998 (021-999998 / 0-21-999998) +53-21-999999 / 11953-21-999999 (021-999999 / 0-21-999999)