National Phone Number Registry NPNR

Area Code 858 Location

Area code 858 is currently assigned for use in California since Jun 12, 1999. This area code originated from the 619 area code previously by means of area code split or overlay. View all phone prefixes used in area code 858 or other area codes in California.

(858)
Enter 7-digit phone number for area code 858 or the complete 10-digit phone number

Phone Prefixes for Area Code 858

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Area code Location Company / Service Provider
858-200 LA JOLLA, CA U.S. TELEPACIFIC CORP. - CA
858-201 San Diego, CA LEVEL 3 COMMUNICATIONS, LLC - CA
858-202 LA JOLLA, CA PACIFIC BELL
858-203 LA JOLLA, CA NEUTRAL TANDEM-CALIFORNIA, LLC - CA
858-204 POWAY, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
858-205 DEL MAR, CA T-MOBILE USA, INC.
858-206 POWAY, CA YMAX COMMUNICATIONS CORP. - CA
858-207 Rancho Bernardo, CA TELEPORT COMMUNICATIONS AMERICA, LLC - CA
858-208 POWAY, CA O1 COMMUNICATIONS, INC. - CA
858-209 DEL MAR, CA T-MOBILE USA, INC.
858-210 LA JOLLA, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
858-212 POWAY, CA SPRINT SPECTRUM L.P.
858-213 POWAY, CA SPRINT SPECTRUM L.P.
858-215 Rancho Penasquitos, CA PACIFIC BELL
858-216 Rancho Penasquitos, CA U.S. TELEPACIFIC CORP. - CA
858-217 Rancho Bernardo, CA U.S. TELEPACIFIC CORP. - CA
858-218 POWAY, CA U.S. TELEPACIFIC CORP. - CA
858-219 San Diego, CA AMERICAN MESSAGING SERVICES, LLC
858-220 LA JOLLA, CA SPRINT SPECTRUM L.P.
858-221 San Diego, CA LOCAL ACCESS SERVICES LLC - CA
858-222 LA JOLLA, CA YMAX COMMUNICATIONS CORP. - CA
858-223 San Diego, CA ONVOY, LLC - CA
858-224 LA JOLLA, CA CBEYOND COMMUNICATIONS, LLC - CA
858-225 San Diego, CA TNCI-OP-CO - CA
858-226 San Diego, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
858-227 Rancho Santa Fe, CA XO CALIFORNIA, INC.
858-228 LA JOLLA, CA XO CALIFORNIA, INC.
858-229 San Diego, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
858-230 LA JOLLA, CA AT&T CORP.
858-231 POWAY, CA T-MOBILE USA, INC.
858-232 LA JOLLA, CA NEW CINGULAR WIRELESS PCS, LLC
858-233 LA JOLLA, CA NORTH COUNTY COMMUNICATIONS CORP. - CA
858-234 Rancho Bernardo, CA NORTH COUNTY COMMUNICATIONS CORP. - CA
858-236 POWAY, CA NORTH COUNTY COMMUNICATIONS CORP. - CA
858-237 San Diego, CA NORTH COUNTY COMMUNICATIONS CORP. - CA
858-239 San Diego, CA BROADVOX-CLEC, LLC - CA
858-240 Rancho Penasquitos, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
858-242 LA JOLLA, CA NEW CINGULAR WIRELESS PCS, LLC
858-243 POWAY, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
858-244 San Diego, CA XO CALIFORNIA, INC.
858-245 LA JOLLA, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
858-246 LA JOLLA, CA LEVEL 3 TELECOM OF CALIFORNIA, LP - CA
858-247 LA JOLLA, CA T-MOBILE USA, INC.
858-248 POWAY, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
858-249 LA JOLLA, CA NEW CINGULAR WIRELESS PCS, LLC
858-250 LA JOLLA, CA WIDE VOICE, LLC - CA
858-251 LA JOLLA, CA PEERLESS NETWORK OF CALIFORNIA, LLC - CA
858-252 DEL MAR, CA T-MOBILE USA, INC.
858-253 San Diego, CA CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA
858-254 POWAY, CA SPRINT SPECTRUM L.P.
New numbers being added to 858 area code
Effective: 07/22/2017
858-209 in DEL MAR, CA
T-MOBILE USA, INC.
Effective: 05/29/2017
858-282 in SAN DIEGO, CA
NEW CINGULAR WIRELESS PCS, LLC
858 Area Code Information
Type of code: General Purpose Code
Location: CA - US
Time zone: P
Assigned for use: Yes
Code in service: Yes
Service date: June 12, 1999
In jeopardy: No
Relief in progress: No
NPA Relief status:
Code assignable: Yes
Geographic or
non-geographic:
G
Reserved for future use: No
Planning letter(s): 128
Overlay code: No
Overlay complex:
Dialing plan Standard Permissive
Home local calls: 7D 1+10D
Foreign local calls: 1+10D NA
Home toll calls: 7D 1+10D
Foreign toll calls: 1+10D -

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