Local Calling Guide
Area code/prefix search
Altamont, IL
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 618-483
| A |
ALMTILXEDS0 |
1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL |
520 |
|
|
|
| 618-738
| A |
STLSMO05RMD |
984E BANDWIDTH.COM CLEC, LLC - IL |
520 |
|
|
|
| 618-738
| 0 |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
520 |
|
2021-08-29 |
|
| 618-738
| 1 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
520 |
|
2024-09-01 |
|
| 618-738
| 2 |
|
224C ONVOY, LLC |
520 |
|
2021-12-03 |
|
| 618-738
| 3 |
|
224C ONVOY, LLC |
520 |
|
2021-12-03 |
|
| 618-738
| 7 |
|
624H ONVOY SPECTRUM, LLC |
520 |
|
2021-11-13 |
|
| 618-738
| 8 |
|
624H ONVOY SPECTRUM, LLC |
520 |
|
2021-11-13 |
|
| 618-738
| 9 |
|
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
520 |
|
2025-03-28 |
|
| 618-881
| A |
CENLILCEGMD |
593K MCC TELEPHONY LLC |
520 |
|
|
|
| 618-881
| 0 |
|
593K MCC TELEPHONY LLC |
520 |
|
2010-06-10 |
|
| 618-881
| 1 |
|
224C ONVOY, LLC |
520 |
|
2018-07-29 |
|
| 618-881
| 2 |
|
224C ONVOY, LLC |
520 |
|
2019-07-29 |
|
| 618-881
| 3 |
|
224C ONVOY, LLC |
520 |
|
2019-07-29 |
|
| 618-881
| 4 |
|
624H ONVOY SPECTRUM, LLC |
520 |
|
2021-07-02 |
|
| 618-881
| 7 |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
520 |
|
2016-01-21 |
|
| 618-881
| 8 |
|
495J STRATUS NETWORKS |
520 |
|
2020-10-02 |
|
| 618-881
| 9 |
|
073H TELNYX LLC |
520 |
|
2020-06-12 |
|
Last updated: Tue, 13 Jan 2026 21:50:02 UTC
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