| 442-200 | Calexico, CA | Landline | Cf Communications DBA Telekenex |
| 442-220 | Nipton, CA | Landline | Telcentris Communications |
| 442-221 | Benton, CA | Landline | Bandwidth.com Clec |
| 442-222 | Oceanside, CA | Landline | Cf Communications DBA Telekenex |
| 442-224 | Vista, CA | Landline | Time Warner Cbl Info Svcs (ca) DBAtime Warner Cbl |
| 442-225 | El Centro, CA | Wireless | Flat West Wireless |
| 442-226 | Brawley, CA | Wireless | T-mobile Usa |
| 442-227 | Palm Springs, CA | Landline | Wide Voice |
| 442-228 | Bishop, CA | Landline | Cebridge Telecom Ca DBA Suddenlink Comms |
| 442-229 | Victorville, CA | Landline | Bandwidth.com Clec |
| 442-230 | Cellco Partnership Dba Verizon Wireless - Ca | Wireless | Oceanside |
| 442-231 | El Centro, CA | Wireless | Flat West Wireless |
| 442-232 | Carlsbad, CA | Landline | Level 3 Communications |
| 442-234 | Palm Springs, CA | Landline | Peerless Network Of California |
| 442-235 | California (CA) | Wireless | Cellco Partnership DBA Verizon Wireless |
| 442-236 | El Centro, CA | Wireless | New Cingular Wireless PCS |
| 442-237 | California (CA) | Wireless | Metro PCS |
| 442-238 | California (CA) | Wireless | Flat West Wireless |
| 442-239 | Telcentris Communications, Llc - Ca | Landline | Oceanside |
| 442-240 | Citrix Communications Llc - Ca | Landline | Oceanside |
| 442-241 | Airus, Inc. - Ca | Landline | Oceanside |
| 442-242 | Victorville, CA | Landline | Metropcs Networks |
| 442-243 | California (CA) | Wireless | Cellco Partnership DBA Verizon Wireless |
| 442-244 | Carlsbad, CA | Landline | Time Warner Cbl Info Svcs (ca) DBAtime Warner Cbl |
| 442-245 | Cellco Partnership Dba Verizon Wireless - Ca | Wireless | Oceanside |
| 442-246 | California (CA) | Landline | Mci Worldcom Communications, Ca |
| 442-247 | New Cingular Wireless Pcs, Llc | Wireless | Oceanside |
| 442-248 | Cellco Partnership Dba Verizon Wireless - Ca | Wireless | Oceanside |
| 442-252 | Telcentris Communications, Llc - Ca | Landline | Oceanside |
| 442-253 | California (CA) | Landline | Centurylink Communications LLC |
| 442-254 | Broadvox-clec, Llc - Ca | Landline | Oceanside |
| 442-255 | T-mobile Usa, Inc. | - | Oceanside |
| 442-256 | Cellco Partnership Dba Verizon Wireless - Ca | Wireless | Oceanside |
| 442-257 | Cellco Partnership Dba Verizon Wireless - Ca | Wireless | Oceanside |
| 442-258 | Cellco Partnership Dba Verizon Wireless - Ca | Wireless | Oceanside |
| 442-261 | Telcentris Communications, Llc - Ca | Landline | Oceanside |
| 442-262 | Sprint Spectrum L.p. | Wireless | Oceanside |
| 442-263 | Local Access Services Llc - Ca | Landline | Oceanside |
| 442-264 | T-mobile Usa, Inc. | Wireless | Oceanside |
| 442-265 | Level 3 Communications, Llc - Ca | Landline | Oceanside |
| 442-271 | Cellco Partnership Dba Verizon Wireless - Ca | Wireless | Oceanside |
| 442-272 | Bandwidth.com Clec, Llc - Ca | Landline | Oceanside |
| 442-273 | T-mobile Usa, Inc. | Wireless | Oceanside |
| 442-274 | New Cingular Wireless Pcs, Llc | Wireless | Oceanside |
| 442-275 | Mosaic Networx Llc - Ca | - | Oceanside |
| 442-278 | New Cingular Wireless Pcs, Llc | - | Oceanside |
| 442-281 | Escondido, CA | Landline | Pacific Bell |
| 442-283 | Cellco Partnership Dba Verizon Wireless - Ca | Landline | Oceanside |
| 442-284 | T-mobile Usa, Inc. | Wireless | Oceanside |
| 442-285 | New Cingular Wireless Pcs, Llc | Wireless | Oceanside |
| 442-300 | Indio, CA | Landline | Cf Communications DBA Telekenex |
| 442-324 | Time Warner Cbl Info Svcs (ca) Dba Time Warner Cab | Landline | Oceanside |
| 442-325 | Bandwidth.com Clec, Llc - Ca | Landline | Oceanside |
| 442-326 | Cebridge Telecom Ca, Llc Dba Suddenlink Comms - Ca | Landline | Oceanside |
| 442-333 | Oceanside, CA | Landline | Telcentris Communications |
| 442-345 | Telcentris Communications, Llc - Ca | Landline | Oceanside |
| 442-347 | Sprint Spectrum L.p. | Wireless | Oceanside |
| 442-400 | Indio, CA | Landline | Cf Communications DBA Telekenex |
| 442-444 | Fallbrook, CA | Landline | Cf Communications DBA Telekenex |
| 442-456 | Telcentris Communications, Llc - Ca | Landline | Oceanside |
| 442-465 | Telcentris Communications, Llc - Ca | Landline | Oceanside |
| 442-500 | Oceanside, CA | Landline | Cf Communications DBA Telekenex |
| 442-615 | New Cingular Wireless Pcs, Llc | Wireless | Oceanside |
| 442-666 | Palm Springs, CA | Landline | Cf Communications DBA Telekenex |
| 442-777 | Escondido, CA | Landline | Telcentris Communications |
| 442-888 | Oceanside, CA | Landline | Telcentris Communications |
| 442-900 | El Centro, CA | Landline | Cf Communications DBA Telekenex |
| 442-999 | Escondido, CA | Landline | Cf Communications DBA Telekenex |