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

LAKEDALLAS prefixes in area code 940

NANPA records 11 assigned NXX blocks to rate center LAKEDALLAS in area code 940, 2.2% of the 506 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 GRANDE COMMUNICATIONS NETWORKS, INC. - TX (3), BRIGHTSPEED OF NORTHERN TEXAS, INC. (3), T-MOBILE USA, INC. (2). The earliest assignment on record here is 2010-06-21 and the most recent 2026-06-15. 7 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

11 assigned blocks – 2.2% of 940
6 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
940-269 GRANDE COMMUNICATIONS NETWORKS, INC. - TX – no yes
940-270 GRANDE COMMUNICATIONS NETWORKS, INC. - TX – no yes
940-279 Charter CHARTER IP ENABLED SERVICES, LLC 2010-06-21 yes yes
940-321 Brightspeed BRIGHTSPEED OF NORTHERN TEXAS, INC. – no yes
940-326 GRANDE COMMUNICATIONS NETWORKS, INC. - TX – yes yes
940-344 T-Mobile T-MOBILE USA, INC. 2022-10-03 yes yes
940-363 T-Mobile T-MOBILE USA, INC. 2023-10-25 yes yes
940-418 T-Mobile METROPCS, INC. 2026-06-15 yes yes
940-497 Brightspeed BRIGHTSPEED OF NORTHERN TEXAS, INC. – no yes
940-498 Brightspeed BRIGHTSPEED OF NORTHERN TEXAS, INC. – yes yes
940-900 FRACTEL, LLC 2020-06-22 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
GRANDE COMMUNICATIONS NETWORKS, INC. - TX – 3 27.3%
BRIGHTSPEED OF NORTHERN TEXAS, INC. Brightspeed 3 27.3%
T-MOBILE USA, INC. T-Mobile 2 18.2%
CHARTER IP ENABLED SERVICES, LLC Charter 1 9.1%
METROPCS, INC. T-Mobile 1 9.1%
FRACTEL, LLC – 1 9.1%

Frequently asked

Which prefixes belong to LAKEDALLAS in area code 940?

11 blocks: 269, 270, 279, 321, 326, 344, 363, 418, 497, 498, 900. The table above gives the holder of each.

Which carriers have numbers in LAKEDALLAS?

GRANDE COMMUNICATIONS NETWORKS, INC. - TX (3 blocks), BRIGHTSPEED OF NORTHERN TEXAS, INC. (3 blocks), T-MOBILE USA, INC. (2 blocks), CHARTER IP ENABLED SERVICES, LLC (1 block), METROPCS, INC. (1 block), FRACTEL, 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 LAKEDALLAS 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 940

All 506 prefixes in 940