Local Calling Guide
Area code/prefix search
NPA: 831
[Rate centres in NPA 831]
[Dial plan for NPA 831]
<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 >>
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 831-921
| 3 |
Tres Pinos |
CA |
SLNSCA01X9Y |
649C ONVOY, LLC - CA |
736 |
|
2019-07-28 |
|
| 831-931
| A |
King City |
CA |
SLNSCA01XCY |
624H ONVOY SPECTRUM, LLC |
736 |
|
2024-02-09 |
|
| 831-931
| 0 |
King City |
CA |
SLNSCA01XCY |
624H ONVOY SPECTRUM, LLC |
736 |
|
2024-02-09 |
|
| 831-931
| 1 |
King City |
CA |
SLNSCA01X9Y |
649C ONVOY, LLC - CA |
736 |
|
2024-03-02 |
|
| 831-931
| 8 |
King City |
CA |
SLNSCA01X9Y |
649C ONVOY, LLC - CA |
736 |
|
2024-04-05 |
|
| 831-946
| A |
Santa Cruz |
CA |
SNJUCACL7MD |
965H FRACTEL, LLC |
722 |
|
|
|
| 831-946
| 0 |
Santa Cruz |
CA |
OKLDCAEB0MD |
073H TELNYX LLC |
722 |
|
2023-05-13 |
|
| 831-946
| 1 |
Santa Cruz |
CA |
SNFCCA21XNZ |
624H ONVOY SPECTRUM, LLC |
722 |
|
2021-11-15 |
|
| 831-946
| 2 |
Santa Cruz |
CA |
SNFCCA21XNZ |
624H ONVOY SPECTRUM, LLC |
722 |
|
2021-11-15 |
|
| 831-946
| 3 |
Santa Cruz |
CA |
SNJUCACL7MD |
965H FRACTEL, LLC |
722 |
|
2021-09-12 |
|
| 831-946
| 4 |
Santa Cruz |
CA |
SNFCCA21XNZ |
624H ONVOY SPECTRUM, LLC |
722 |
|
2021-11-15 |
|
| 831-946
| 5 |
Santa Cruz |
CA |
SNFCCA21XNZ |
624H ONVOY SPECTRUM, LLC |
722 |
|
2021-11-15 |
|
| 831-946
| 6 |
Santa Cruz |
CA |
SNFCCA21XNZ |
624H ONVOY SPECTRUM, LLC |
722 |
|
2021-11-15 |
|
| 831-946
| 7 |
Santa Cruz |
CA |
SNRSCA01KMD |
7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA |
722 |
|
2022-05-02 |
|
| 831-946
| 8 |
Santa Cruz |
CA |
HYWRCAMCDMD |
6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
722 |
|
2022-04-29 |
|
| 831-946
| 9 |
Santa Cruz |
CA |
HYWRCAMCDMD |
6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
722 |
|
2022-07-11 |
|
| 831-948
| A |
Watsonville |
CA |
SNFCCAMKX1X |
9262 UTILITY TELECOM GROUP, LLC - CA |
722 |
|
|
|
| 831-948
| 0 |
Watsonville |
CA |
SNFCCAMKX1X |
9262 UTILITY TELECOM GROUP, LLC - CA |
722 |
|
2015-05-18 |
|
| 831-948
| 1 |
Watsonville |
CA |
SNFCCAMKX1X |
9262 UTILITY TELECOM GROUP, LLC - CA |
722 |
|
2015-05-18 |
|
| 831-948
| 2 |
Watsonville |
CA |
SNFCCAMKX1X |
9262 UTILITY TELECOM GROUP, LLC - CA |
722 |
|
2015-05-18 |
|
| 831-948
| 3 |
Watsonville |
CA |
SNFCCAMKX1X |
9262 UTILITY TELECOM GROUP, LLC - CA |
722 |
|
2015-05-18 |
|
| 831-948
| 4 |
Watsonville |
CA |
SNFCCAMKX1X |
9262 UTILITY TELECOM GROUP, LLC - CA |
722 |
|
2015-05-18 |
|
| 831-948
| 5 |
Watsonville |
CA |
SNFCCAMKX1X |
9262 UTILITY TELECOM GROUP, LLC - CA |
722 |
|
2015-05-18 |
|
| 831-948
| 6 |
Watsonville |
CA |
SNFCCAMKX1X |
9262 UTILITY TELECOM GROUP, LLC - CA |
722 |
|
2015-05-18 |
|
| 831-948
| 7 |
Watsonville |
CA |
SNFCCAMKX1X |
9262 UTILITY TELECOM GROUP, LLC - CA |
722 |
|
2015-05-18 |
|
| 831-948
| 8 |
Watsonville |
CA |
SNFCCAMKX1X |
9262 UTILITY TELECOM GROUP, LLC - CA |
722 |
|
2015-05-18 |
|
| 831-948
| 9 |
Watsonville |
CA |
SNFCCAMKX1X |
9262 UTILITY TELECOM GROUP, LLC - CA |
722 |
|
2015-05-18 |
|
| 831-970
| A |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
|
|
| 831-970
| 0 |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
|
|
| 831-970
| 1 |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
|
|
| 831-970
| 2 |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
|
|
| 831-970
| 3 |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
|
|
| 831-970
| 4 |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
|
|
| 831-970
| 5 |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
|
|
| 831-970
| 6 |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
|
|
| 831-970
| 7 |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
|
|
| 831-970
| 8 |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
|
|
| 831-970
| 9 |
Salinas |
CA |
SLNSCA01X8Y |
5562 METROPCS, INC. |
736 |
|
|
|
| 831-975
| A |
Salinas |
CA |
|
394L COMCAST PHONE OF CALIFORNIA, LLC |
736 |
|
|
|
| 831-975
| 0 |
Salinas |
CA |
SLNSCA01XEY |
6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
736 |
|
2014-09-04 |
|
| 831-975
| 1 |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
2014-11-10 |
|
| 831-975
| 2 |
Salinas |
CA |
SLNSCA01XXX |
8826 LEVEL 3 COMMUNICATIONS, LLC - CA |
736 |
|
2011-12-24 |
|
| 831-975
| 3 |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
2014-11-10 |
|
| 831-975
| 4 |
Salinas |
CA |
|
394L COMCAST PHONE OF CALIFORNIA, LLC |
736 |
|
2008-08-14 |
|
| 831-975
| 5 |
Salinas |
CA |
|
394L COMCAST PHONE OF CALIFORNIA, LLC |
736 |
|
2009-05-12 |
|
| 831-975
| 6 |
Salinas |
CA |
SLNSCA01XEY |
6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA |
736 |
|
2014-10-04 |
|
| 831-975
| 7 |
Salinas |
CA |
SLNSCA01XTX |
7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA |
736 |
|
2017-04-23 |
|
| 831-975
| 8 |
Salinas |
CA |
SLNSCA01X8Y |
6529 T-MOBILE USA, INC. |
736 |
|
2014-09-30 |
|
| 831-975
| 9 |
Salinas |
CA |
SLNSCA01X8Y |
5562 METROPCS, INC. |
736 |
|
2014-06-13 |
|
| 831-996
| A |
Tres Pinos |
CA |
|
515J IP HORIZON LLC |
736 |
|
|
|
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Last updated: Tue, 16 Jun 2026 00:09:45 UTC
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