Local Calling Guide
Area code/prefix search
NPA: 309
[Rate centres in NPA 309]
[Dial plan for NPA 309]
NXX: 603
| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 309-603
| A |
Chillicothe |
IL |
PEORILPJXMY |
846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL |
368 |
|
|
|
| 309-603
| 0 |
Chillicothe |
IL |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
368 |
|
2017-03-27 |
|
| 309-603
| 1 |
Chillicothe |
IL |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
368 |
|
2017-03-27 |
|
| 309-603
| 2 |
Chillicothe |
IL |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
368 |
|
2017-07-27 |
|
| 309-603
| 3 |
Chillicothe |
IL |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
368 |
|
2017-07-27 |
|
| 309-603
| 4 |
Chillicothe |
IL |
|
984E BANDWIDTH.COM CLEC, LLC - IL |
368 |
|
2018-07-16 |
|
| 309-603
| 5 |
Chillicothe |
IL |
|
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
368 |
|
2018-10-29 |
|
| 309-603
| 6 |
Chillicothe |
IL |
|
7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
368 |
|
2018-02-19 |
|
| 309-603
| 7 |
Chillicothe |
IL |
|
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
368 |
|
2016-08-02 |
|
| 309-603
| 8 |
Chillicothe |
IL |
|
224C ONVOY, LLC |
368 |
|
2020-05-22 |
|
| 309-603
| 9 |
Chillicothe |
IL |
|
846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL |
368 |
|
2010-03-11 |
|
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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