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

DEFIANCE prefixes in area code 419

NANPA records 13 assigned NXX blocks to rate center DEFIANCE in area code 419, 1.7% of the 783 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. 7 holders hold those blocks, the largest being BRIGHTSPEED OF NORTHWEST OHIO, INC. (4), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH (3), NEW CINGULAR WIRELESS PCS, LLC - IL (2). The earliest assignment on record here is 2001-08-20 and the most recent 2002-03-15. 7 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 636, 712 – overlay codes cover the same geography, so a rate center is served by all of them.

13 assigned blocks – 1.7% of 419
7 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
419-438 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH – no yes
419-439 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH – no yes
419-576 T-Mobile METROPCS, INC. – yes yes
419-769 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
419-770 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
419-782 Brightspeed BRIGHTSPEED OF NORTHWEST OHIO, INC. – no yes
419-783 Brightspeed BRIGHTSPEED OF NORTHWEST OHIO, INC. – no yes
419-784 Brightspeed BRIGHTSPEED OF NORTHWEST OHIO, INC. – no yes
419-785 Brightspeed BRIGHTSPEED OF NORTHWEST OHIO, INC. – yes yes
419-789 T-Mobile OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC – yes yes
419-956 Lumen LEVEL 3 COMMUNICATIONS, LLC - OH 2002-03-15 yes yes
419-980 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 2002-03-13 yes yes
419-990 QUALSTAR COMMUNICATIONS, INC. - OH 2001-08-20 no 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
BRIGHTSPEED OF NORTHWEST OHIO, INC. Brightspeed 4 30.8%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH Verizon 3 23.1%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 2 15.4%
METROPCS, INC. T-Mobile 1 7.7%
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC T-Mobile 1 7.7%
LEVEL 3 COMMUNICATIONS, LLC - OH Lumen 1 7.7%
QUALSTAR COMMUNICATIONS, INC. - OH – 1 7.7%

Frequently asked

Which prefixes belong to DEFIANCE in area code 419?

13 blocks: 438, 439, 576, 769, 770, 782, 783, 784, 785, 789, 956, 980 and 1 more, all listed in the table above.

Which carriers have numbers in DEFIANCE?

BRIGHTSPEED OF NORTHWEST OHIO, INC. (4 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH (3 blocks), NEW CINGULAR WIRELESS PCS, LLC - IL (2 blocks), METROPCS, INC. (1 block), OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC (1 block), LEVEL 3 COMMUNICATIONS, 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 DEFIANCE 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 419

All 783 prefixes in 419