Local Calling Guide
Area code/prefix search
NPA: 858
[Rate centres in NPA 858]
[Dial plan for NPA 858]
NXX: 203
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 858-203
| A |
La Jolla |
CA |
SNDGCAJWDS0 |
649C ONVOY, LLC - CA |
732 |
|
|
|
| 858-203
| 0 |
La Jolla |
CA |
SNDGCAJWDS0 |
649C ONVOY, LLC - CA |
732 |
|
2016-03-25 |
|
| 858-203
| 1 |
La Jolla |
CA |
SNDGCAJWDS0 |
649C ONVOY, LLC - CA |
732 |
|
2016-03-26 |
|
| 858-203
| 2 |
La Jolla |
CA |
SNDGCAJWDS0 |
649C ONVOY, LLC - CA |
732 |
|
2016-03-26 |
|
| 858-203
| 3 |
La Jolla |
CA |
|
793K TWC IP ENABLED SERVICES, LLC |
732 |
|
2016-03-31 |
|
| 858-203
| 4 |
La Jolla |
CA |
|
394L COMCAST PHONE OF CALIFORNIA, LLC |
732 |
|
2016-04-04 |
|
| 858-203
| 5 |
La Jolla |
CA |
SNDICAETAMD |
6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
732 |
|
2016-03-27 |
|
| 858-203
| 6 |
La Jolla |
CA |
SNDACAGLDS2 |
8826 LEVEL 3 COMMUNICATIONS, LLC - CA |
732 |
|
2016-07-21 |
|
| 858-203
| 7 |
La Jolla |
CA |
|
793K TWC IP ENABLED SERVICES, LLC |
732 |
|
2016-06-23 |
|
| 858-203
| 8 |
La Jolla |
CA |
ESCNCAKY2MD |
6529 T-MOBILE USA, INC. |
732 |
|
2017-09-27 |
|
| 858-203
| 9 |
La Jolla |
CA |
SNDGCAJWDS0 |
649C ONVOY, LLC - CA |
732 |
|
2017-06-09 |
|
Last updated: Tue, 16 Jun 2026 00:09:45 UTC
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