---
title: "Area code 734: Michigan, United States"
url: "https://lookvalid.com/area-code/734.md"
canonical_url: "https://lookvalid.com/area-code/734"
last_updated: "2026-10-23"
type: "reference"
summary: "Area code 734 serves Michigan, United States. Number formats, numbering rules, a live phone validator and the other codes in Michigan."
---

# Area code 734: Michigan, United States

Area code 734 serves Michigan, United States. Number formats, numbering rules, a live phone validator and the other codes in Michigan.

NANPA lists 700 central office codes (prefixes) in use in area code 734, held by 37 holders across 33 rate centers.
Michigan Bell Tel holds the most prefixes, 161 (23%). 71% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
The FCC unwanted-call data has 2,095 complaints on file for 1,733 numbers in 734, most often filed as "Unwanted Calls". These are consumer reports, not findings.

## Facts

- In service since: 1997-12-13
- Time zone: Eastern (E)
- Assigned overlays: 679 (2025-11-07)
- Prefixes in use: 700
- Pooled prefixes: 494 (71%)
- Rate centers: 33
- Companies holding prefixes: 37
- Assignment dates on file: 2001-01-22 to 2026-03-04 (189 prefixes)
- ZIP codes in its places: 43

## Rate centers

| Rate center | Prefixes | Share |
| --- | --- | --- |
| ANN ARBOR | 133 | 19% |
| LIVONIA | 64 | 9% |
| WAYNE | 60 | 9% |
| YPSILANTI | 52 | 7% |
| PLYMOUTH | 43 | 6% |
| MONROE | 40 | 6% |
| WYANDOTTE | 39 | 6% |
| TRENTON | 27 | 4% |
| 25 other rate centers | 242 | 35% |

## Carriers

| Holder | Prefixes | Share |
| --- | --- | --- |
| Michigan Bell Tel | 161 | 23% |
| Verizon Wireless | 71 | 10% |
| Omnipoint Communications Midwest Operations | 55 | 8% |
| Mcimetro Access Transmission Services | 52 | 7% |
| Level 3 Communications | 42 | 6% |
| Onvoy, Llcv | 42 | 6% |
| 31 other carriers | 277 | 40% |

A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company.

## History

- 1947-01-01: Area code 313, named as the parent of 734 in the NANPA report, was in service.
- 1997-12-13: Area code 734 went into service.

## Nearest area codes

The area codes closest to 734, measured between the centers of the ZIP code places they serve, are 248 (about 32 miles), 947 (about 32 miles), 586 (about 44 miles), 517 (about 49 miles) and 810 (about 54 miles).

## ZIP codes

43 ZIP codes fall in places that have a rate center in this area code. The places with the most are Ann Arbor, MI (8 ZIP codes), Livonia, MI (5 ZIP codes) and Belleville, MI (2 ZIP codes). A ZIP code and an area code are unrelated systems, so a ZIP code can sit in more than one area code and an area code spans many ZIP codes.

## Complaints on file

2,095 complaints for 1,733 numbers. Numbers whose latest complaint falls in each year:

- 2023: 81
- 2024: 107
- 2025: 107

## Questions

### Where is area code 734?

NANPA assigns area code 734 to Michigan, United States.

### In which state does area code 734 sit?

Michigan. 734 is one of 13 area codes the NANPA table assigns to the state.

### Which places does area code 734 cover?

The places with the most ZIP codes among the rate centers in 734 are Ann Arbor, MI, Livonia, MI and Belleville, MI. The rate center list on this page shows all of them.

### Who owns area code 734?

NANPA assigns area codes. Within 734, Michigan Bell Tel holds the most prefixes, 161 prefixes or 23%.

### Which time zone does 734 use?

The NANPA NPA report lists the time zone for 734 as Eastern (E).

### What year did 734 enter service?

The NANPA NPA report gives an in-service date of 1997-12-13, so 734 has been in use since 1997.

### Does area code 734 have an overlay?

Yes. 679 (in service 2025-11-07) shares the same area with 734, so numbers from all of them are local to each other.

### Which area codes are nearest to 734?

The area codes closest to 734, measured between the centers of the ZIP code places they serve, are 248 (about 32 miles), 947 (about 32 miles), 586 (about 44 miles), 517 (about 49 miles) and 810 (about 54 miles).

### How many prefixes does area code 734 have?

NANPA's report dated 2026-10-17 lists 700 prefixes in service in 734, spread over 33 rate centers and 37 holders.

### Are there complaints about 734 numbers?

The FCC data on file has 2,095 complaints for 1,733 numbers in 734. They are unverified consumer reports. A number with no complaints on file is not proven safe.

Sources: NANPA central office code report dated 2026-10-17; NANPA NPA report dated 2026-10-18; FCC unwanted-call complaints, data fetched 2026-10-17; ZIP code places from GeoNames (CC BY 4.0).