Local Calling Guide
Area code/prefix search
Waterloo, WI
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 920-478
| A |
WTRLWIXARS0 |
0886 FRONTIER NORTH INC. - WI |
356 |
|
|
|
| 920-478
| 0 |
|
145J TERRA NOVA TELECOM INC. |
356 |
|
2025-08-21 |
|
| 920-478
| 1 |
|
0886 FRONTIER NORTH INC. - WI |
356 |
|
|
|
| 920-478
| 2 |
|
0886 FRONTIER NORTH INC. - WI |
356 |
|
|
|
| 920-478
| 3 |
|
0886 FRONTIER NORTH INC. - WI |
356 |
|
|
|
| 920-478
| 4 |
|
0886 FRONTIER NORTH INC. - WI |
356 |
|
|
|
| 920-478
| 5 |
|
7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI |
356 |
|
2003-08-06 |
|
| 920-478
| 6 |
|
007F BANDWIDTH.COM CLEC, LLC - WI |
356 |
|
2011-10-21 |
|
| 920-478
| 7 |
|
0886 FRONTIER NORTH INC. - WI |
356 |
|
|
|
| 920-478
| 8 |
|
792K CHARTER IP ENABLED SERVICES, LLC |
356 |
|
2006-03-25 |
|
| 920-478
| 9 |
|
0886 FRONTIER NORTH INC. - WI |
356 |
|
|
|
| 920-561
| A |
MILWWI12XWX |
007F BANDWIDTH.COM CLEC, LLC - WI |
356 |
|
|
|
| 920-561
| 1 |
|
007F BANDWIDTH.COM CLEC, LLC - WI |
356 |
|
2013-12-20 |
|
| 920-561
| 2 |
|
225C ONVOY, LLC - WI |
356 |
|
2020-03-22 |
|
| 920-561
| 3 |
|
225C ONVOY, LLC - WI |
356 |
|
2020-03-22 |
|
| 920-561
| 4 |
|
624H ONVOY SPECTRUM, LLC |
356 |
|
2021-06-27 |
|
| 920-561
| 5 |
|
225C ONVOY, LLC - WI |
356 |
|
2018-08-19 |
|
| 920-561
| 6 |
|
7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI |
356 |
|
2016-03-21 |
|
| 920-561
| 7 |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
356 |
|
2015-01-02 |
|
| 920-561
| 8 |
|
225C ONVOY, LLC - WI |
356 |
|
2021-03-26 |
|
| 920-561
| 9 |
|
225C ONVOY, LLC - WI |
356 |
|
2021-03-26 |
|
| 920-608
| A |
MILWWIAU23Z |
839J EON TELECOM, INC. |
356 |
|
2024-11-29 |
|
| 920-608
| 0 |
|
839J EON TELECOM, INC. |
356 |
|
2024-11-29 |
|
| 920-608
| 1 |
|
839J EON TELECOM, INC. |
356 |
|
2024-11-29 |
|
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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