---
title: "Area code 586: Michigan, United States"
url: "https://lookvalid.com/area-code/586.md"
canonical_url: "https://lookvalid.com/area-code/586"
last_updated: "2026-10-23"
type: "reference"
summary: "Area code 586 serves Michigan, United States. Number formats, numbering rules, a live phone validator and the other codes in Michigan."
---

# Area code 586: Michigan, United States

Area code 586 serves Michigan, United States. Number formats, numbering rules, a live phone validator and the other codes in Michigan.

NANPA lists 546 central office codes (prefixes) in use in area code 586, held by 30 holders across 11 rate centers.
Verizon Wireless holds the most prefixes, 132 (24%). 71% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
The FCC unwanted-call data has 1,634 complaints on file for 1,087 numbers in 586, most often filed as "Unwanted Calls". These are consumer reports, not findings.

## Facts

- In service since: 2001-09-22
- Time zone: Eastern (E)
- Prefixes in use: 546
- Pooled prefixes: 387 (71%)
- Rate centers: 11
- Companies holding prefixes: 30
- Assignment dates on file: 2001-02-15 to 2026-07-01 (226 prefixes)
- ZIP codes in its places: 22

## Rate centers

| Rate center | Prefixes | Share |
| --- | --- | --- |
| MT CLEMENS | 190 | 35% |
| WARREN | 132 | 24% |
| ROSEVILLE | 73 | 13% |
| CENTERLINE | 43 | 8% |
| UTICA | 32 | 6% |
| ROMEO | 21 | 4% |
| WASHINGTON | 13 | 2% |
| ARMADA | 12 | 2% |
| 3 other rate centers | 30 | 5% |

## Carriers

| Holder | Prefixes | Share |
| --- | --- | --- |
| Verizon Wireless | 132 | 24% |
| Michigan Bell Tel | 100 | 18% |
| New Cingular Wireless PCS | 60 | 11% |
| Omnipoint Communications Midwest Operations | 43 | 8% |
| American Messaging Services | 27 | 5% |
| Level 3 Communications | 26 | 5% |
| 24 other carriers | 158 | 29% |

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

- 1993-12-01: Area code 810, named as the parent of 586 in the NANPA report, was in service.
- 2001-09-22: Area code 586 went into service.

## Nearest area codes

The area codes closest to 586, measured between the centers of the ZIP code places they serve, are 248 (about 16 miles), 947 (about 16 miles), 810 (about 28 miles), 734 (about 44 miles) and 517 (about 80 miles).

## ZIP codes

22 ZIP codes fall in places that have a rate center in this area code. The places with the most are Warren, MI (7 ZIP codes), Utica, MI (4 ZIP codes) and Mount Clemens, 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

1,634 complaints for 1,087 numbers. Numbers whose latest complaint falls in each year:

- 2023: 68
- 2024: 64
- 2025: 48

## Questions

### Where is area code 586?

NANPA assigns area code 586 to Michigan, United States.

### In which state does area code 586 sit?

Michigan. 586 is one of 13 area codes the NANPA table assigns to the state.

### Which places does area code 586 cover?

The places with the most ZIP codes among the rate centers in 586 are Warren, MI, Utica, MI and Mount Clemens, MI. The rate center list on this page shows all of them.

### Who owns area code 586?

NANPA assigns area codes. Within 586, Verizon Wireless holds the most prefixes, 132 prefixes or 24%.

### Which time zone does 586 use?

The NANPA NPA report lists the time zone for 586 as Eastern (E).

### What year did 586 enter service?

The NANPA NPA report gives an in-service date of 2001-09-22, so 586 has been in use since 2001.

### Does area code 586 have an overlay?

The NANPA NPA report lists no other area code in an overlay with 586.

### Which area codes are nearest to 586?

The area codes closest to 586, measured between the centers of the ZIP code places they serve, are 248 (about 16 miles), 947 (about 16 miles), 810 (about 28 miles), 734 (about 44 miles) and 517 (about 80 miles).

### How many prefixes does area code 586 have?

NANPA's report dated 2026-10-17 lists 546 prefixes in service in 586, spread over 11 rate centers and 30 holders.

### Are there complaints about 586 numbers?

The FCC data on file has 1,634 complaints for 1,087 numbers in 586. 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).