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

SHERIDAN prefixes in area code 870

NANPA records 6 assigned NXX blocks to rate center SHERIDAN in area code 870, 0.8% 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. 2 holders hold those blocks, the largest being WINDSTREAM ARKANSAS, INC. (4), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR (2). The earliest assignment on record here is 2001-06-20 and the most recent 2015-07-13. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 307, 317, 406, 463 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 0.8% of 870
2 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
870-320 Windstream WINDSTREAM ARKANSAS, INC. 2015-07-13 yes yes
870-484 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 2001-06-20 yes yes
870-883 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 2003-10-07 yes yes
870-917 Windstream WINDSTREAM ARKANSAS, INC. – yes yes
870-941 Windstream WINDSTREAM ARKANSAS, INC. – yes yes
870-942 Windstream WINDSTREAM ARKANSAS, INC. – no 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
WINDSTREAM ARKANSAS, INC. Windstream 4 66.7%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR Verizon 2 33.3%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to SHERIDAN in area code 870?

6 blocks: 320, 484, 883, 917, 941, 942. The table above gives the holder of each.

Which carriers have numbers in SHERIDAN?

WINDSTREAM ARKANSAS, INC. (4 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SHERIDAN 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