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

WINDOM prefixes in area code 507

NANPA records 8 assigned NXX blocks to rate center WINDOM in area code 507, 1.0% of the 766 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. 6 holders hold those blocks, the largest being NEW CINGULAR WIRELESS PCS, LLC - IL (2), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN (2), ONVOY, LLC - MN (1). The earliest assignment on record here is 2002-09-27 and the most recent 2021-03-02. 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 codes 430, 620, 903 – overlay codes cover the same geography, so a rate center is served by all of them.

8 assigned blocks – 1% of 507
6 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
507-221 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
507-303 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 2003-01-21 yes yes
507-407 Onvoy ONVOY, LLC - MN 2003-03-21 yes yes
507-783 T-Mobile AERIAL COMMUNICATIONS, INC. 2021-03-02 yes yes
507-822 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 2002-09-27 no yes
507-830 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – no yes
507-831 Lumen QWEST CORPORATION – yes yes
507-832 CITY OF WINDOM - MN 2005-03-14 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
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 2 25%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN Verizon 2 25%
ONVOY, LLC - MN Onvoy 1 12.5%
AERIAL COMMUNICATIONS, INC. T-Mobile 1 12.5%
QWEST CORPORATION Lumen 1 12.5%
CITY OF WINDOM - MN – 1 12.5%

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 WINDOM in area code 507?

8 blocks: 221, 303, 407, 783, 822, 830, 831, 832. The table above gives the holder of each.

Which carriers have numbers in WINDOM?

NEW CINGULAR WIRELESS PCS, LLC - IL (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN (2 blocks), ONVOY, LLC - MN (1 block), AERIAL COMMUNICATIONS, INC. (1 block), QWEST CORPORATION (1 block), CITY OF WINDOM - MN (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WINDOM 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 507

All 766 prefixes in 507