Area Code 840
CA - 125 exchanges found
About Area Code 840
This page displays all phone exchanges (NXX codes) associated with area code 840. Click on any 6-digit prefix to see detailed information about phone numbers in that range.
840
Phone Exchanges (NXX)
| Prefix | Exchange (NXX) | Rate Center | Carrier | Action |
|---|---|---|---|---|
| 840-200 | 200 | CHINO | Unknown | |
| 840-201 | 201 | FONTANA | Unknown | |
| 840-202 | 202 | POMONA | Unknown | |
| 840-203 | 203 | S BERNDINO | Unknown | |
| 840-204 | 204 | S BERNDINO | Unknown | |
| 840-205 | 205 | CLAREMONT | Unknown | |
| 840-206 | 206 | CHINO | Unknown | |
| 840-207 | 207 | ARROWHEAD | Unknown | |
| 840-208 | 208 | CLAREMONT | Unknown | |
| 840-209 | 209 | ARROWHEAD | Unknown | |
| 840-210 | 210 | FONTANA | Unknown | |
| 840-212 | 212 | CHINO | Unknown | |
| 840-213 | 213 | REDLANDS | Unknown | |
| 840-214 | 214 | MARSHALL | Unknown | |
| 840-215 | 215 | HIGHLAND | Unknown | |
| 840-216 | 216 | ARROWHEAD | Unknown | |
| 840-217 | 217 | FONTANA | Unknown | |
| 840-218 | 218 | CHINO | Unknown | |
| 840-219 | 219 | CALIMESA | Unknown | |
| 840-220 | 220 | RIALTO | Unknown | |
| 840-221 | 221 | S BERNDINO | Unknown | |
| 840-222 | 222 | S BERNDINO | Unknown | |
| 840-223 | 223 | CALIMESA | 981E-BANDWIDTH.COM CLEC, LLC - CA | |
| 840-223 | 223 | CALIMESA | Unknown | |
| 840-224 | 224 | S BERNDINO | Unknown | |
| 840-225 | 225 | POMONA | Unknown | |
| 840-226 | 226 | POMONA | Unknown | |
| 840-227 | 227 | S BERNDINO | Unknown | |
| 840-228 | 228 | COLTON | Unknown | |
| 840-229 | 229 | CLAREMONT | Unknown | |
| 840-230 | 230 | POMONA | Unknown | |
| 840-231 | 231 | POMONA | Unknown | |
| 840-232 | 232 | FONTANA | Unknown | |
| 840-233 | 233 | ARROWHEAD | Unknown | |
| 840-234 | 234 | ARROWHEAD | Unknown | |
| 840-235 | 235 | COLTON | Unknown | |
| 840-236 | 236 | CLAREMONT | Unknown | |
| 840-237 | 237 | ONTARIO | Unknown | |
| 840-238 | 238 | POMONA | Unknown | |
| 840-239 | 239 | FONTANA | Unknown | |
| 840-240 | 240 | DIAMONDBAR | Unknown | |
| 840-241 | 241 | RIALTO | 649C-ONVOY, LLC - CA | |
| 840-241 | 241 | RIALTO | Unknown | |
| 840-242 | 242 | UPLAND | Unknown | |
| 840-243 | 243 | POMONA | Unknown | |
| 840-244 | 244 | DIAMONDBAR | Unknown | |
| 840-245 | 245 | REDLANDS | Unknown | |
| 840-246 | 246 | ETIWANDA | 6529-T-MOBILE USA, INC. | |
| 840-246 | 246 | ETIWANDA | Unknown | |
| 840-247 | 247 | HIGHLAND | Unknown | |
| 840-248 | 248 | FONTANA | Unknown | |
| 840-249 | 249 | MARSHALL | Unknown | |
| 840-250 | 250 | ARROWHEAD | Unknown | |
| 840-251 | 251 | REDLANDS | Unknown | |
| 840-252 | 252 | MENTONE | Unknown | |
| 840-253 | 253 | CALIMESA | 6529-T-MOBILE USA, INC. | |
| 840-253 | 253 | CALIMESA | Unknown | |
| 840-254 | 254 | RIALTO | 649C-ONVOY, LLC - CA | |
| 840-254 | 254 | RIALTO | Unknown | |
| 840-255 | 255 | S BERNDINO | Unknown | |
| 840-256 | 256 | UPLAND | 6529-T-MOBILE USA, INC. | |
| 840-256 | 256 | UPLAND | Unknown | |
| 840-257 | 257 | COLTON | 6529-T-MOBILE USA, INC. | |
| 840-257 | 257 | COLTON | Unknown | |
| 840-258 | 258 | HIGHLAND | 6006-CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | |
| 840-258 | 258 | HIGHLAND | Unknown | |
| 840-259 | 259 | POMONA | Unknown | |
| 840-260 | 260 | POMONA | Unknown | |
| 840-261 | 261 | FONTANA | Unknown | |
| 840-262 | 262 | ARROWHEAD | 6529-T-MOBILE USA, INC. | |
| 840-262 | 262 | ARROWHEAD | Unknown | |
| 840-263 | 263 | FONTANA | Unknown | |
| 840-264 | 264 | POMONA | Unknown | |
| 840-265 | 265 | ARROWHEAD | Unknown | |
| 840-266 | 266 | S BERNDINO | Unknown | |
| 840-267 | 267 | POMONA | Unknown | |
| 840-268 | 268 | MARSHALL | 6010-NEW CINGULAR WIRELESS PCS, LLC | |
| 840-268 | 268 | MARSHALL | Unknown | |
| 840-269 | 269 | ONTARIO | Unknown | |
| 840-270 | 270 | ONTARIO | Unknown | |
| 840-271 | 271 | FONTANA | 6006-CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | |
| 840-271 | 271 | FONTANA | Unknown | |
| 840-272 | 272 | CHINO | Unknown | |
| 840-273 | 273 | MENTONE | 649C-ONVOY, LLC - CA | |
| 840-273 | 273 | MENTONE | Unknown | |
| 840-274 | 274 | ARROWHEAD | 649C-ONVOY, LLC - CA | |
| 840-274 | 274 | ARROWHEAD | Unknown | |
| 840-275 | 275 | POMONA | 6006-CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | |
| 840-275 | 275 | POMONA | Unknown | |
| 840-276 | 276 | UPLAND | 6006-CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | |
| 840-276 | 276 | UPLAND | Unknown | |
| 840-277 | 277 | CLAREMONT | 6006-CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | |
| 840-277 | 277 | CLAREMONT | Unknown | |
| 840-284 | 284 | CHINO | Unknown | |
| 840-300 | 300 | REDLANDS | Unknown | |
| 840-333 | 333 | POMONA | Unknown | |
| 840-336 | 336 | COLTON | Unknown | |
| 840-345 | 345 | POMONA | Unknown | |
| 840-356 | 356 | ARROWHEAD | Unknown | |
| 840-400 | 400 | ONTARIO | Unknown | |
| 840-444 | 444 | ARROWHEAD | Unknown | |
| 840-465 | 465 | CHINO | Unknown | |
| 840-466 | 466 | UPLAND | Unknown | |
| 840-500 | 500 | BIGBEAR CY | 965H-FRACTEL, LLC | |
| 840-500 | 500 | BIGBEAR CY | Unknown | |
| 840-587 | 587 | S BERNDINO | Unknown | |
| 840-588 | 588 | DIAMONDBAR | Unknown | |
| 840-600 | 600 | COLTON | Unknown | |
| 840-666 | 666 | FONTANA | Unknown | |
| 840-677 | 677 | ETIWANDA | Unknown | |
| 840-688 | 688 | CRESTLINE | 965H-FRACTEL, LLC | |
| 840-688 | 688 | CRESTLINE | Unknown | |
| 840-699 | 699 | ONTARIO | Unknown | |
| 840-777 | 777 | POMONA | Unknown | |
| 840-788 | 788 | FONTANA | Unknown | |
| 840-799 | 799 | RIALTO | Unknown | |
| 840-800 | 800 | UPLAND | Unknown | |
| 840-804 | 804 | CLAREMONT | Unknown | |
| 840-837 | 837 | POMONA | Unknown | |
| 840-877 | 877 | MARSHALL | Unknown | |
| 840-888 | 888 | REDLANDS | Unknown | |
| 840-899 | 899 | HIGHLAND | Unknown | |
| 840-900 | 900 | RIALTO | Unknown | |
| 840-977 | 977 | CLAREMONT | Unknown | |
| 840-999 | 999 | UPLAND | Unknown |
Quick Facts
- Area Code 840
- State CA
- Exchanges 125