North American NumbersJonesboro / Pine Bluff (eastern, southern & northern Arkansas)
Split from 501 in 1997 to cover eastern, southern and most of northern Arkansas outside the major metros. It received its first overlay, 327, in 2024, triggering mandatory ten-digit dialing.
Status, dates and counts are read from NumberResearch (NANPA / CNAC / FCC records). Assignment records show initial assignees, not the carrier serving a number today.
Where 870 is
Eastern, southern and most of northern Arkansas — excludes the Little Rock, Fort Smith and Fayetteville/Springdale/Rogers metros..
Communities served wholly or partly by 870:
Also covers parts of Carroll County shared with the 327 overlay.
How it relates to other codes
The codes 870 was split from, spawned, or shares its area with. A split divides the map and changes some numbers; an overlay shares the same ground and changes none — what's the difference?
How 870 got here
How full it is
Prefix-assignment counts describe allocation to carriers, not how many individual numbers are in use. Full technical records: NumberResearch ↗.
Place, relationships and history above are compiled by North American Numbers from the sources listed and last checked 2026-09-18. A check date is not an expert review — see how this is made. Flag an error.