NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

BAY prefixes in area code 870

NANPA records 5 assigned NXX blocks to rate center BAY in area code 870, 0.6% of the 785 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 4 holders hold those blocks, the largest being CSC VOICE, LLC (2), E. RITTER COMMUNICATIONS, LLC (1), BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC (1). The earliest assignment on record here is 2007-01-30 and the most recent 2015-03-12. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

5 assigned blocks – 0.6% of 870
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
870-756 E. RITTER COMMUNICATIONS, LLC 2007-01-30 no yes
870-770 CSC VOICE, LLC – yes yes
870-781 Brightspeed BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC – yes yes
870-803 CSC VOICE, LLC 2014-01-03 yes yes
870-973 T-Mobile METROPCS, INC. 2015-03-12 yes yes

The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.

Who holds the blocks

HolderBrandBlocksShare here
CSC VOICE, LLC – 2 40%
E. RITTER COMMUNICATIONS, LLC – 1 20%
BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC Brightspeed 1 20%
METROPCS, INC. T-Mobile 1 20%

Frequently asked

Which prefixes belong to BAY in area code 870?

5 blocks: 756, 770, 781, 803, 973. The table above gives the holder of each.

Which carriers have numbers in BAY?

CSC VOICE, LLC (2 blocks), E. RITTER COMMUNICATIONS, LLC (1 block), BRIGHTSPEED OF NORTHWEST ARKANSAS, LLC (1 block), METROPCS, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is BAY a city?

It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.

Other rate centers in 870

All 785 prefixes in 870