Local Calling Guide
Area code/prefix search
Fitchburg, MI
| NPA-NXX |
BLOCK |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 517-565
| A |
FTBGMIXIRSA |
0681 FRONTIER MIDSTATES, INC. - MI |
346 |
|
|
|
| 517-565
| 0 |
|
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
346 |
|
2006-01-05 |
|
| 517-565
| 2 |
|
624H ONVOY SPECTRUM, LLC |
346 |
|
2021-06-17 |
|
| 517-565
| 3 |
|
0681 FRONTIER MIDSTATES, INC. - MI |
346 |
|
|
|
| 517-565
| 4 |
|
6120 LEVEL 3 COMMUNICATIONS, LLC - MI |
346 |
|
2004-07-16 |
|
| 517-565
| 5 |
|
145J TERRA NOVA TELECOM INC. |
346 |
|
2025-05-31 |
|
| 517-565
| 6 |
|
543C ONVOY, LLCV - MI |
346 |
|
2021-04-25 |
|
| 517-565
| 7 |
|
543C ONVOY, LLCV - MI |
346 |
|
2013-04-01 |
|
| 517-565
| 9 |
|
145J TERRA NOVA TELECOM INC. |
346 |
|
2026-02-06 |
|
| 517-634
| A |
|
817J INTERACTIVE SERVICES NETWORK, INC. |
346 |
|
|
|
| 517-923
| A |
MDTPMICODS0 |
3535 ACD TELECOM, INC. - MI |
346 |
|
|
|
| 517-923
| 2 |
|
543C ONVOY, LLCV - MI |
346 |
|
2020-02-10 |
|
| 517-923
| 3 |
|
543C ONVOY, LLCV - MI |
346 |
|
2020-02-10 |
|
| 517-923
| 4 |
|
3535 ACD TELECOM, INC. - MI |
346 |
|
|
|
| 517-923
| 6 |
|
508J CENTURYLINK COMMUNICATIONS, LLC |
346 |
|
2016-01-25 |
|
| 517-923
| 7 |
|
3535 ACD TELECOM, INC. - MI |
346 |
|
|
|
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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