Local Calling Guide
Area code/prefix search
Casco, WI
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 274-999
| A |
|
225C ONVOY, LLC - WI |
350 |
|
2025-10-18 |
|
| 274-999
| 0 |
|
225C ONVOY, LLC - WI |
350 |
|
2025-10-18 |
|
| 274-999
| 9 |
|
225C ONVOY, LLC - WI |
350 |
|
2025-10-18 |
|
| 920-837
| A |
CASCWIXADS0 |
0857 BRIGHTSPEED OF WESTERN WISCONSIN, LLC |
350 |
|
|
|
| 920-837
| 0 |
|
766H INTEGRATED PATH COMMUNICATIONS, LLC - WI |
350 |
|
2018-07-12 |
|
| 920-837
| 1 |
|
225C ONVOY, LLC - WI |
350 |
|
2018-10-25 |
|
| 920-837
| 2 |
|
0857 BRIGHTSPEED OF WESTERN WISCONSIN, LLC |
350 |
|
|
|
| 920-837
| 3 |
|
007F BANDWIDTH.COM CLEC, LLC - WI |
350 |
|
2020-02-20 |
|
| 920-837
| 4 |
|
145J TERRA NOVA TELECOM INC. |
350 |
|
2025-07-12 |
|
| 920-837
| 5 |
|
5489 LEVEL 3 COMMUNICATIONS, LLC - WI |
350 |
|
2014-11-25 |
|
| 920-837
| 6 |
|
225C ONVOY, LLC - WI |
350 |
|
2021-07-02 |
|
| 920-837
| 7 |
|
0857 BRIGHTSPEED OF WESTERN WISCONSIN, LLC |
350 |
|
|
|
| 920-837
| 8 |
|
624H ONVOY SPECTRUM, LLC |
350 |
|
2021-06-21 |
|
Last updated: Tue, 13 Jan 2026 21:50:02 UTC
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