| 951-821 | Los Angeles | Neutral Tandem-california, Llc - Ca |
| 951-823 | Ontario | T-mobile Usa, Inc. |
| 951-824 | Los Angeles | O1 Communications, Inc. - Ca |
| 951-826 | Riverside | Pacific Bell |
| 951-827 | Riverside | Pacific Bell |
| 951-830 | Ontario | Sprint Spectrum L.p. |
| 951-833 | Ontario | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-834 | Riverside | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-836 | Ontario | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-837 | Santa Ana | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-840 | Ontario | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-842 | Santa Ana | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-845 | Beaumont | Frontier California Inc. |
| 951-846 | Los Angeles | Level 3 Telecom Of California, Lp - Ca |
| 951-847 | Ontario | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-848 | Los Angeles | Bandwidth.com Clec, Llc - Ca |
| 951-849 | Banning | Frontier California Inc. |
| 951-850 | Riverside | New Cingular Wireless Pcs, Llc |
| 951-852 | Riverside | New Cingular Wireless Pcs, Llc |
| 951-858 | Ontario | Sprint Spectrum L.p. |
| 951-867 | Riverside | T-mobile Usa, Inc. |
| 951-870 | Ontario | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-878 | Los Angeles | O1 Communications, Inc. - Ca |
| 951-880 | Santa Ana | Xo California, Inc. |
| 951-888 | Los Angeles | Telcentris Communications, Llc - Ca |
| 951-892 | Riverside | Mci Worldcom Communications, Inc., Ca |
| 951-893 | Riverside | Level 3 Telecom Of California, Lp - Ca |
| 951-894 | Murrieta | Mpower Communications Corp - Ca |
| 951-897 | Ontario | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-898 | Corona | Pacific Bell |
| 951-900 | Los Angeles | Cf Communications, Llc Dba Telekenex - Ca |
| 951-901 | Los Angeles | O1 Communications, Inc. - Ca |
| 951-902 | Riverside | Sprint Spectrum L.p. |
| 951-903 | Santa Ana | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-905 | Riverside | T-mobile Usa, Inc. |
| 951-906 | Ontario | Sprint Spectrum L.p. |
| 951-907 | Riverside | T-mobile Usa, Inc. |
| 951-914 | Temecula | Frontier California Inc. |
| 951-916 | Nuevo | U.s. Telepacific Corp. |
| 951-922 | Banning | Frontier California Inc. |
| 951-923 | Riverside | Time Warner Cbl Info Svcs (ca) Dba Time Warner Cab |
| 951-924 | Moreno Valley | Frontier California Inc. |
| 951-925 | Hemet | Frontier California Inc. |
| 951-926 | Hemet | Frontier California Inc. |
| 951-927 | Hemet | Frontier California Inc. |
| 951-928 | Perris | Frontier California Inc. |
| 951-929 | Hemet | Frontier California Inc. |
| 951-934 | Los Angeles | O1 Communications, Inc. - Ca |
| 951-940 | Perris | Frontier California Inc. |
| 951-941 | Riverside | New Cingular Wireless Pcs, Llc |
| 951-943 | Perris | Frontier California Inc. |
| 951-956 | Ontario | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-961 | Riverside | New Cingular Wireless Pcs, Llc |
| 951-963 | Ontario | Sprint Spectrum L.p. |
| 951-965 | Ontario | Sprint Spectrum L.p. |
| 951-966 | Ontario | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-968 | Riverside | Level 3 Telecom Of California, Lp - Ca |
| 951-970 | Santa Ana | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-972 | Ontario | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-973 | Riverside | T-mobile Usa, Inc. |
| 951-977 | Riverside | Level 3 Telecom Of California, Lp - Ca |
| 951-981 | Ontario | Time Warner Cbl Info Svcs (ca) Dba Time Warner Cab |
| 951-990 | Ontario | Cellco Partnership Dba Verizon Wireless - Ca |
| 951-992 | Ontario | Sprint Spectrum L.p. |
| 951-999 | Riverside | Cf Communications, Llc Dba Telekenex - Ca |