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

WILMINGTON prefixes in area code 937

NANPA records 17 assigned NXX blocks to rate center WILMINGTON in area code 937, 2.2% of the 781 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. 8 holders hold those blocks, the largest being FRONTIER NORTH, INC. - OH (6), NEW CINGULAR WIRELESS PCS, LLC - IL (2), T-MOBILE USA, INC. (2). The earliest assignment on record here is 2001-03-13 and the most recent 2016-03-30. 13 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 302, 326, 472, 518 – overlay codes cover the same geography, so a rate center is served by all of them.

17 assigned blocks – 2.2% of 937
8 holders of record
13 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
937-218 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
937-283 Frontier FRONTIER NORTH, INC. - OH – yes yes
937-302 T-Mobile T-MOBILE USA, INC. 2001-03-26 yes yes
937-366 Frontier FRONTIER NORTH, INC. - OH 2001-05-11 yes yes
937-382 Frontier FRONTIER NORTH, INC. - OH – no yes
937-383 Frontier FRONTIER NORTH, INC. - OH – no yes
937-481 Lumen LEVEL 3 TELECOM OF OHIO, LLC - OH 2003-12-11 yes yes
937-527 T-Mobile T-MOBILE USA, INC. – yes yes
937-556 Lumen LEVEL 3 COMMUNICATIONS, LLC - OH 2002-08-16 yes yes
937-566 Peerless PEERLESS NETWORK OF OHIO, LLC - OH 2002-06-25 yes yes
937-571 Lumen LEVEL 3 COMMUNICATIONS, LLC - OH 2002-06-05 yes yes
937-655 Frontier FRONTIER NORTH, INC. - OH – yes yes
937-725 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH – no yes
937-728 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 2001-03-13 no yes
937-805 Charter TWC IP ENABLED SERVICES, LLC 2013-06-03 yes yes
937-944 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2006-10-17 yes yes
937-992 Frontier FRONTIER NORTH, INC. - OH 2016-03-30 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
FRONTIER NORTH, INC. - OH Frontier 6 35.3%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 2 11.8%
T-MOBILE USA, INC. T-Mobile 2 11.8%
LEVEL 3 COMMUNICATIONS, LLC - OH Lumen 2 11.8%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH Verizon 2 11.8%
LEVEL 3 TELECOM OF OHIO, LLC - OH Lumen 1 5.9%
PEERLESS NETWORK OF OHIO, LLC - OH Peerless 1 5.9%
TWC IP ENABLED SERVICES, LLC Charter 1 5.9%

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 WILMINGTON in area code 937?

17 blocks: 218, 283, 302, 366, 382, 383, 481, 527, 556, 566, 571, 655 and 5 more, all listed in the table above.

Which carriers have numbers in WILMINGTON?

FRONTIER NORTH, INC. - OH (6 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (2 blocks), T-MOBILE USA, INC. (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - OH (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH (2 blocks), LEVEL 3 TELECOM OF OHIO, LLC - OH (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WILMINGTON 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 937

All 781 prefixes in 937