Local Calling Guide
Area code/prefix search
California, MO
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 573-304
| A |
CLMAMOWBAMD |
073H TELNYX LLC |
521 |
|
|
|
| 573-304
| 0 |
|
073H TELNYX LLC |
521 |
|
2020-07-30 |
|
| 573-304
| 1 |
|
624H ONVOY SPECTRUM, LLC |
521 |
|
2024-03-05 |
|
| 573-304
| 2 |
|
4932 LEVEL 3 COMMUNICATIONS, LLC - MO |
521 |
|
2013-08-19 |
|
| 573-304
| 3 |
|
7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO |
521 |
|
2016-06-01 |
|
| 573-304
| 4 |
|
4932 LEVEL 3 COMMUNICATIONS, LLC - MO |
521 |
|
|
|
| 573-304
| 5 |
|
093F ONVOY, LLC - MO |
521 |
|
2018-07-16 |
|
| 573-304
| 6 |
|
7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO |
521 |
|
2018-09-14 |
|
| 573-464
| A |
CLMAMOWB0MD |
4932 LEVEL 3 COMMUNICATIONS, LLC - MO |
521 |
|
|
|
| 573-464
| 3 |
|
093F ONVOY, LLC - MO |
521 |
|
2019-05-23 |
|
| 573-464
| 4 |
|
4932 LEVEL 3 COMMUNICATIONS, LLC - MO |
521 |
|
|
|
| 573-464
| 6 |
|
093F ONVOY, LLC - MO |
521 |
|
2019-05-23 |
|
| 573-796
| A |
CLFRMOXARS0 |
1811 EMBARQ MISSOURI, INC. DBA CENTURYLINK - MO |
521 |
|
|
|
| 573-863
| A |
CLMAMOXAXIX |
093F ONVOY, LLC - MO |
521 |
|
|
|
| 573-863
| 2 |
|
093F ONVOY, LLC - MO |
521 |
|
2021-05-14 |
|
| 573-863
| 3 |
|
093F ONVOY, LLC - MO |
521 |
|
2021-05-14 |
|
Last updated: Tue, 13 Jan 2026 21:50:02 UTC
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