Phone numbers in Lambertville, Michigan
Lambertville has 7 phone prefixes in area code 734.
Biggest holders: Onvoy, Interactive Services Network, Frontier. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 29%
- Internet / business phone carrier 71%
Every prefix in Lambertville
Search the first six digits of a number in this list. If it's here, the number started in Lambertville with the carrier shown. If it isn't, check the Michigan page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 734-370 | Interactive Services Network | Internet / business phone carrier | – |
| 734-534 | Interactive Services Network | Internet / business phone carrier | – |
| 734-568 | Onvoy | Internet / business phone carrier | 2005 |
| 734-607 | Onvoy | Internet / business phone carrier | 2006 |
| 734-715 | Onvoy | Internet / business phone carrier | – |
| 734-854 | Frontier | Local phone company | – |
| 734-856 | Frontier | Local phone company | – |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.