| District of Texas area codes: 817 | |
|---|---|
| Country | United States |
| State/Province | Texas |
| Major City | Dallas |
| Time Zone | Central |
| Prefix | County | Primary City | Company |
|---|---|---|---|
| 817-366 | Tarrant | Arlington, TX | New Cingular Wireless PCS - IL |
| 817-367 | Tarrant | Fort Worth, TX | Southwestern Bell |
| 817-368 | Tarrant | Arlington, TX | New Cingular Wireless PCS - IL |
| 817-369 | Tarrant | Fort Worth, TX | Grande Communications Networks |
| 817-370 | Tarrant | Fort Worth, TX | Southwestern Bell |
| 817-371 | Tarrant | Arlington, TX | New Cingular Wireless PCS - IL |
| 817-372 | Tarrant | Fort Worth, TX | New Cingular Wireless PCS - IL |
| 817-373 | Johnson | Rio Vista, TX | Texas Windstream |
| 817-374 | Johnson | Alvarado, TX | Level 3 Communications |
| 817-375 | Tarrant | Arlington, TX | Southwestern Bell |
| 817-376 | Tarrant | Arlington, TX | Southwestern Bell |
| 817-377 | Tarrant | Fort Worth, TX | Southwestern Bell |
| 817-378 | Tarrant | Fort Worth, TX | Southwestern Bell |
| 817-379 | Tarrant | Keller, TX | Gte-sw DBA Verizon Sw Inc.-tx |
| 817-380 | Tarrant | Fort Worth, TX | Grande Communications Networks |
| 817-381 | Tarrant | Azle, TX | Level 3 Communications |
| 817-382 | Parker | Springtown, TX | Level 3 Communications |
| 817-383 | Wise | Rhome, TX | Broadvox-clec |
| 817-384 | Tarrant | Arlington, TX | Communications Sales & Services DBA Cssi |
| 817-385 | Tarrant | Arlington, TX | Southwestern Bell |
There are 772 prefixes, In the code area, the major cities are Arlington, TX;Bedford, TX;Benbrook, TX;Burleson, T. The major city is Dallas.