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

CHIPPEWFLS prefixes in area code 715

NANPA records 8 assigned NXX blocks to rate center CHIPPEWFLS in area code 715, 1.0% 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. 5 holders hold those blocks, the largest being WISCONSIN BELL INC (4), TELEPORT COMMUNICATIONS AMERICA, LLC WI (1), ONVOY, LLC - WI (1). The earliest assignment on record here is 2002-07-17 and the most recent 2010-02-25. 6 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 code 534 – overlay codes cover the same geography, so a rate center is served by all of them.

8 assigned blocks – 1% of 715
5 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
715-438 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC WI 2010-02-25 yes yes
715-705 Onvoy ONVOY, LLC - WI – yes yes
715-720 AT&T WISCONSIN BELL INC – no yes
715-723 AT&T WISCONSIN BELL INC – no yes
715-726 AT&T WISCONSIN BELL INC – yes yes
715-738 AT&T WISCONSIN BELL INC – yes yes
715-861 Lumen LEVEL 3 COMMUNICATIONS, LLC - WI 2002-07-17 yes yes
715-944 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL 2008-04-17 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
WISCONSIN BELL INC AT&T 4 50%
TELEPORT COMMUNICATIONS AMERICA, LLC WI AT&T 1 12.5%
ONVOY, LLC - WI Onvoy 1 12.5%
LEVEL 3 COMMUNICATIONS, LLC - WI Lumen 1 12.5%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 12.5%

Frequently asked

Which prefixes belong to CHIPPEWFLS in area code 715?

8 blocks: 438, 705, 720, 723, 726, 738, 861, 944. The table above gives the holder of each.

Which carriers have numbers in CHIPPEWFLS?

WISCONSIN BELL INC (4 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC WI (1 block), ONVOY, LLC - WI (1 block), LEVEL 3 COMMUNICATIONS, LLC - WI (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CHIPPEWFLS 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 715

All 785 prefixes in 715