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

DELAFIELD prefixes in area code 262

NANPA records 4 assigned NXX blocks to rate center DELAFIELD in area code 262, 0.6% of the 634 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 BANDWIDTH.COM CLEC, LLC - WI (1), TWC IP ENABLED SERVICES, LLC (1), NEW CINGULAR WIRELESS PCS, LLC - IL (1). The earliest assignment on record here is 2001-08-09 and the most recent 2018-11-13. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.6% of 262
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
262-256 Bandwidth BANDWIDTH.COM CLEC, LLC - WI 2018-11-13 yes yes
262-303 Charter TWC IP ENABLED SERVICES, LLC – yes yes
262-337 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2001-08-09 yes yes
262-646 Brightspeed BRIGHTSPEED OF WESTERN WISCONSIN, LLC – 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
BANDWIDTH.COM CLEC, LLC - WI Bandwidth 1 25%
TWC IP ENABLED SERVICES, LLC Charter 1 25%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 25%
BRIGHTSPEED OF WESTERN WISCONSIN, LLC Brightspeed 1 25%

Frequently asked

Which prefixes belong to DELAFIELD in area code 262?

4 blocks: 256, 303, 337, 646. The table above gives the holder of each.

Which carriers have numbers in DELAFIELD?

BANDWIDTH.COM CLEC, LLC - WI (1 block), TWC IP ENABLED SERVICES, LLC (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), BRIGHTSPEED OF WESTERN WISCONSIN, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is DELAFIELD 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 262

All 634 prefixes in 262