Area Code +1-787-(3700000...3709999) located in Rio Piedras, Puerto Rico (PR), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 787 Subscriber Number From : 3700000 Subscriber Number To : 3709999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : NEW CINGULAR WRLS GA Click here to buy Puerto Rico Area Code Database Other Information Language Code : es (Spanish) Country Number : 630 (Puerto Rico) Country Code : PR (Puerto Rico) Region Code : PR Region Name : Puerto Rico City : Rio Piedras Timezone : America/Puerto_Rico Coordinated Universal Time : -04:00 Daylight Saving Time : No National Significant Number Minimum Length : 10 Latitude : 18.4000 Longitude : -66.0500 ‹ previous : +1-787-(3699000...3699999) next › : +1-787-(3710000...3719999) Dialling Instructions For trunk calls: 1 787 3700000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 787 3700000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3700000 ~ 3709999 (Count: 10,000) Example: +1-787-3700000 / 0111-787-3700000 (1787-3700000 / 1-787-3700000) +1-787-3700001 / 0111-787-3700001 (1787-3700001 / 1-787-3700001) +1-787-3700002 / 0111-787-3700002 (1787-3700002 / 1-787-3700002) +1-787-3700003 / 0111-787-3700003 (1787-3700003 / 1-787-3700003) +1-787-3700004 / 0111-787-3700004 (1787-3700004 / 1-787-3700004) ...+1-787-xxxxxxx / 0111-787-xxxxxxx (1787-xxxxxxx / 1-787-xxxxxxx) ...+1-787-3709995 / 0111-787-3709995 (1787-3709995 / 1-787-3709995) +1-787-3709996 / 0111-787-3709996 (1787-3709996 / 1-787-3709996) +1-787-3709997 / 0111-787-3709997 (1787-3709997 / 1-787-3709997) +1-787-3709998 / 0111-787-3709998 (1787-3709998 / 1-787-3709998) +1-787-3709999 / 0111-787-3709999 (1787-3709999 / 1-787-3709999)