---
title: "Area code 870: Arkansas, United States"
url: "https://lookvalid.com/area-code/870.md"
canonical_url: "https://lookvalid.com/area-code/870"
last_updated: "2026-10-23"
type: "reference"
summary: "Area code 870 serves Arkansas, United States. Number formats, numbering rules, a live phone validator and the other codes in Arkansas."
---

# Area code 870: Arkansas, United States

Area code 870 serves Arkansas, United States. Number formats, numbering rules, a live phone validator and the other codes in Arkansas.

NANPA lists 785 central office codes (prefixes) in use in area code 870, held by 56 holders across 245 rate centers.
Southwestern Bell holds the most prefixes, 154 (20%). 76% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
The FCC unwanted-call data has 1,377 complaints on file for 1,177 numbers in 870, most often filed as "Unwanted Calls". These are consumer reports, not findings.

## Facts

- In service since: 1997-04-14
- Time zone: Central (C)
- Assigned overlays: 327 (2024-02-20)
- Prefixes in use: 785
- Pooled prefixes: 594 (76%)
- Rate centers: 245
- Companies holding prefixes: 56
- Assignment dates on file: 2001-01-23 to 2025-12-15 (328 prefixes)
- ZIP codes in its places: 207

## Rate centers

| Rate center | Prefixes | Share |
| --- | --- | --- |
| JONESBORO | 46 | 6% |
| PINE BLUFF | 45 | 6% |
| EL DORADO | 24 | 3% |
| HARRISON | 18 | 2% |
| BLYTHEVL | 15 | 2% |
| PARAGOULD | 14 | 2% |
| ARKADLPHIA | 13 | 2% |
| MT HOME | 13 | 2% |
| 237 other rate centers | 597 | 76% |

## Carriers

| Holder | Prefixes | Share |
| --- | --- | --- |
| Southwestern Bell | 154 | 20% |
| New Cingular Wireless PCS | 107 | 14% |
| Verizon Wireless | 85 | 11% |
| Windstream Arkansas | 72 | 9% |
| Level 3 Communications | 47 | 6% |
| Brightspeed Of Central Arkansas | 44 | 6% |
| 50 other carriers | 276 | 35% |

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 501, named as the parent of 870 in the NANPA report, was in service.
- 1997-04-14: Area code 870 went into service.
- 2024-02-20: Area code 327 went into service as an overlay in the same area as 870.

## Nearest area codes

The area codes closest to 870, measured between the centers of the ZIP code places they serve, are 501 (about 16 miles), 901 (about 121 miles), 479 (about 122 miles), 662 (about 155 miles) and 417 (about 181 miles).

## ZIP codes

207 ZIP codes fall in places that have a rate center in this area code. The places with the most are Jonesboro, AR (5 ZIP codes), Pine Bluff, AR (4 ZIP codes) and Monticello, AR (3 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

1,377 complaints for 1,177 numbers. Numbers whose latest complaint falls in each year:

- 2023: 81
- 2024: 55
- 2025: 57

## Questions

### Where is area code 870?

NANPA assigns area code 870 to Arkansas, United States.

### In which state does area code 870 sit?

Arkansas. 870 is one of 4 area codes the NANPA table assigns to the state.

### Which places does area code 870 cover?

The places with the most ZIP codes among the rate centers in 870 are Jonesboro, AR, Pine Bluff, AR and Monticello, AR. The rate center list on this page shows all of them.

### Who owns area code 870?

NANPA assigns area codes. Within 870, Southwestern Bell holds the most prefixes, 154 prefixes or 20%.

### Which time zone does 870 use?

The NANPA NPA report lists the time zone for 870 as Central (C).

### What year did 870 enter service?

The NANPA NPA report gives an in-service date of 1997-04-14, so 870 has been in use since 1997.

### Does area code 870 have an overlay?

Yes. 327 (in service 2024-02-20) shares the same area with 870, so numbers from all of them are local to each other.

### Which area codes are nearest to 870?

The area codes closest to 870, measured between the centers of the ZIP code places they serve, are 501 (about 16 miles), 901 (about 121 miles), 479 (about 122 miles), 662 (about 155 miles) and 417 (about 181 miles).

### How many prefixes does area code 870 have?

NANPA's report dated 2026-10-17 lists 785 prefixes in service in 870, spread over 245 rate centers and 56 holders.

### Are there complaints about 870 numbers?

The FCC data on file has 1,377 complaints for 1,177 numbers in 870. 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).