Here is a list of Current St. Joseph Phone Prefixes: (all in use at St Joe RateCenter AND St Joe Switch unless noted below)
| Prefix | Comments | Effective Date | |
| 205 | US Cellular - new PCS in town 7/2003 | 4/03 | |
| 232 | SW Bell Old time | ||
| 233 | SW Bell Old time | ||
| 236 | SW Bell New - mostly Centrex | ||
| 238 | SW Bell Old time - "South end" | ||
| 244 | SWB Mobile Systems - St Joseph RateCenter, but in the KC Switch | 4/03 | |
| 248 | Now T-Mobile? Aerial (Wireless) - St Joseph RateCenter, but in the KC Switch | 8/01 | |
| 261 | SWB Mobile Systems - Cell new ~9/99; used by Cingular - St Joseph RateCenter, but in the KC Switch | ||
| 262 | SWB Mobile Systems: KC SMSA LP, used by Cingular - St Joseph RateCenter, but in the KC Switch | ||
| 271 | SW Bell Mostly centrex | ||
| 273 | Birch (now out of bankruptcy!) - St Joseph RateCenter, but in the KC Switch | 5/02 | |
| 279 | SW Bell Old time | ||
| 294 | Sprint wireless (Sprint Spectrum LP) | ||
| 334 | Assigned - not used? - deleted ~10/99 from NPAW - but showed in the St Joe switch in Kidder Mo RateCenter - not showing 9/04 | ||
| 341 | Cellular One replacement: CMT Partners dba Cellular One Now used by Cellco Partnership dba: Verizon | ~2001 | |
| 351 | Cellular One replacement: CMT Partners dba Cellular One Now used by Cellco Partnership dba: Verizon | ||
| 364 | SW Bell Old time | ||
| 365 | SW Bell Old time - Elwood KS is served from SJ, Mo Switch this is properly 913-365, because 816-365 is a Nextel exchange | ||
| 380 | SW Bell Elwood Ks newish: Elwood KS is served from SJ, Mo switch, this is properly 913-380 | ||
| 383 | SW Bell MWSC Dorm rooms, centrex, and others | ||
| 385 | KMC Telecom III - MO SJ RateCenter and Switch - Shows as Landline - Modem bank??? (Fiber optic SONET to Tier III Markets) | 3/01 | |
| 387 | SW Bell Mixed cell & landline | ||
| 390 | SW Bell Mixed cell & landline | 1993 | |
| 396 | SW Bell "Originally South End's" 2nd prefix - centrex/business - now all over town | circa 1999 | |
| 572 | SW Bell use only - testing etc | ||
| 596 | Nextel ~9/98 Wireless - St Joseph RateCenter, but in the KC Switch | ||
| 617 | Aerial Communications (now a new name?) Wireless - St Joseph RateCenter, but in the KC Switch | ||
| 646 | Sprint wireless (Sprint Spectrum LP) in use as cell @ 10/04 | 11/01 | |
| 671 | SW Bell Some centrex | ||
| 676 | SW Bell New 1999 or 98 | ||
| 689 | Sprint Communications Co LP - MO registered in SJ LANDLINE - confirmed used by Sprint Data 12/02! | '3/01 | |
| 752 | SW B Mobile Systems - used by Cingular - City of SJ Cell Phones - St Joseph RateCenter, but in the KC Switch | '3/01 | |
| 788 | SPRINT at Agency Mo (253) | 10/04 | |
| 901 | SW Bell New ~ 5/99 - about 50% are for pagers | 3/01 | |
| 940 | SW Bell use only - testing etc |
Some of this info comes from: http://www.nanpa.com
and the former NPAW program from www.PCConsultant.com