Area code 870

Area code 870 at a glance

NANPA lists 870 as an in-service geographic area code for Arkansas, first put into service on April 14, 1997. It is an overlay: 870 and 327 cover the same territory, so neighbors on the same street can have different area codes. It is in the Central time zone. The places with the most assigned exchanges include Jonesboro, Pine Bluff, El Dorado, Harrison, and Blytheville. By population, its largest named places are Jonesboro, Pine Bluff, Paragould, Texarkana, and West Memphis.

Places served by 870

870 holds 39% of the 2,025 central office codes assigned in Arkansas, the most of any code in the state. 201 Census places could be matched to rate centers with 870 exchanges; the most populous are Jonesboro (82,384), Pine Bluff (38,785), Paragould (30,680), and Texarkana (28,897). Each place page lists the exact prefixes and carriers for that town.

Dialing 870 numbers

According to NANPA's dialing-plan data, local calls within 870 are dialed as ten digits (area code plus number) and toll calls as 1 plus ten digits. Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "1+10 digit dialing for all calls permissible at service provider discretion."

Phone companies in area code 870

58 carriers hold the 785 central office codes assigned in 870. Southwestern Bell has the most, with 154 (20%). 594 of the codes (76%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Where 870 numbers are rated

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 870 has codes in 245 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

How full is area code 870?

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 785 are assigned in 870, 98% of 800. 59 were assigned in 2020 or later.

Using area code 870 for business calls

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Porting a number you already use in area code 870 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

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