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

ARGONNE prefixes in area code 715

NANPA records 3 assigned NXX blocks to rate center ARGONNE in area code 715, 0.4% 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. 3 holders hold those blocks, the largest being METRO SOUTHWEST PCS, LLP (1), FRONTIER COMMUNICATIONS OF WISCONSIN LLC (1), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI (1). The earliest assignment on record here is 2003-03-03 and the most recent 2003-06-05. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.4% of 715
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
715-521 METRO SOUTHWEST PCS, LLP 2003-06-05 yes yes
715-649 Frontier FRONTIER COMMUNICATIONS OF WISCONSIN LLC – yes yes
715-902 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 2003-03-03 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
METRO SOUTHWEST PCS, LLP – 1 33.3%
FRONTIER COMMUNICATIONS OF WISCONSIN LLC Frontier 1 33.3%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI Verizon 1 33.3%

Frequently asked

Which prefixes belong to ARGONNE in area code 715?

3 blocks: 521, 649, 902. The table above gives the holder of each.

Which carriers have numbers in ARGONNE?

METRO SOUTHWEST PCS, LLP (1 block), FRONTIER COMMUNICATIONS OF WISCONSIN LLC (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is ARGONNE 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