939 Area Code has 49 prefixes
| Prefix | Primary City | Carrier |
|---|---|---|
| 939-202 | Levittown | Telefonica Larga Distancia De Puerto Rico |
| 939-203 | Manati | Sprint |
| 939-216 | Carolina | Suncom DBA T-mobile USA |
| 939-217 | Ponce | Suncom DBA T-mobile USA |
| 939-218 | Santurce | Cingular Wireless |
| 939-219 | Arecibo | Suncom DBA T-mobile USA |
| 939-232 | Bayamon | Suncom DBA T-mobile USA |
| 939-241 | Rincon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-242 | Bayamon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-245 | Bayamon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-247 | Bayamon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-249 | Bayamon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-252 | Bayamon | Cingular Wireless |
| 939-254 | Bayamon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-262 | Bayamon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-263 | Bayamon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-271 | Bayamon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-275 | Bayamon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-282 | Bayamon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-288 | Bayamon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-292 | Levittown | Cingular Wireless |
| 939-308 | Arecibo | Suncom DBA T-mobile USA |
| 939-325 | Cayey | Suncom DBA T-mobile USA |
| 939-332 | Caguas | Cingular Wireless |
| 939-339 | Aguada | Suncom DBA T-mobile USA |
| 939-349 | Aguada | Suncom DBA T-mobile USA |
| 939-358 | Santurce | Pr Wireless DBA Open Mobile |
| 939-366 | Aguada | Suncom DBA T-mobile USA |
| 939-389 | Santurce | Cingular Wireless |
| 939-397 | Santurce | Cingular Wireless |
| 939-410 | Bayamon | Puerto Rico Telco DBA Verizon Wireless Puerto Rico |
| 939-437 | Trujillo Alto | Telefonica Larga Distancia De Puerto Rico |
| 939-452 | Santurce | Pr Wireless DBA Open Mobile |
| 939-475 | Santurce | Cingular Wireless |
| 939-489 | Carolina | Cingular Wireless |
| 939-579 | Santurce | Cingular Wireless |
| 939-628 | Santurce | Cingular Wireless |
| 939-630 | Santurce | Cingular Wireless |
| 939-639 | Santurce | Cingular Wireless |
| 939-640 | Santurce | Cingular Wireless |
| 939-642 | Santurce | Cingular Wireless |
| 939-644 | Santurce | Cingular Wireless |
| 939-645 | Santurce | Cingular Wireless |
| 939-717 | Santurce | Cingular Wireless |
| 939-732 | Arroyo | Suncom DBA T-mobile USA |
| 939-865 | Mayaguez | Suncom DBA T-mobile USA |
| 939-891 | Fajardo | Suncom DBA T-mobile USA |
| 939-940 | Santurce | Cingular Wireless |
| 939-969 | Santurce | Cingular Wireless |