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

EULESS prefixes in area code 817

NANPA records 47 assigned NXX blocks to rate center EULESS in area code 817, 6.0% of the 781 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. 10 holders hold those blocks, the largest being SOUTHWESTERN BELL (28), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (4), GRANDE COMMUNICATIONS NETWORKS, INC. - TX (3). The earliest assignment on record here is 2001-09-26 and the most recent 2023-12-21. 24 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 682 – overlay codes cover the same geography, so a rate center is served by all of them.

47 assigned blocks – 6% of 817
10 holders of record
24 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
817-267 AT&T SOUTHWESTERN BELL – no yes
817-268 AT&T SOUTHWESTERN BELL – yes yes
817-280 AT&T SOUTHWESTERN BELL – no yes
817-282 AT&T SOUTHWESTERN BELL – no yes
817-283 AT&T SOUTHWESTERN BELL – no yes
817-285 AT&T SOUTHWESTERN BELL – yes yes
817-318 AT&T SOUTHWESTERN BELL – yes yes
817-354 AT&T SOUTHWESTERN BELL – no yes
817-355 AT&T SOUTHWESTERN BELL – no yes
817-358 AT&T SOUTHWESTERN BELL – no yes
817-359 AT&T SOUTHWESTERN BELL – no yes
817-362 GRANDE COMMUNICATIONS NETWORKS, INC. - TX – no yes
817-391 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
817-399 AT&T SOUTHWESTERN BELL – no yes
817-438 AT&T AT&T - LOCAL – yes yes
817-445 Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 2002-01-10 no yes
817-494 AT&T SOUTHWESTERN BELL – yes yes
817-508 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX – yes yes
817-510 Onvoy ONVOY, LLC - TX – yes yes
817-532 Lumen LEVEL 3 COMMUNICATIONS, LLC - TX – yes yes
817-540 AT&T SOUTHWESTERN BELL – yes yes
817-545 AT&T SOUTHWESTERN BELL – no yes
817-553 Onvoy ONVOY, LLC - TX – yes yes
817-554 Windstream PAETEC ITEL, LLC – yes yes
817-571 AT&T SOUTHWESTERN BELL – no yes
817-574 Lumen LEVEL 3 OF TELECOM OF TEXAS, LLC - TX – yes yes
817-643 GRANDE COMMUNICATIONS NETWORKS, INC. - TX – no yes
817-662 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
817-684 AT&T SOUTHWESTERN BELL – no yes
817-685 AT&T SOUTHWESTERN BELL – no yes
817-785 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
817-786 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
817-799 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - TX – yes yes
817-803 Onvoy ONVOY, LLC - TX – yes yes
817-835 AT&T SOUTHWESTERN BELL – yes yes
817-836 GRANDE COMMUNICATIONS NETWORKS, INC. - TX – no yes
817-848 AT&T SOUTHWESTERN BELL 2007-01-19 yes yes
817-857 Lumen LEVEL 3 COMMUNICATIONS, LLC - TX – yes yes
817-858 AT&T SOUTHWESTERN BELL – no yes
817-864 AT&T SOUTHWESTERN BELL 2001-09-26 yes yes
817-868 AT&T SOUTHWESTERN BELL – no yes
817-931 AT&T SOUTHWESTERN BELL – no yes
817-952 AT&T SOUTHWESTERN BELL – yes yes
817-956 AT&T SOUTHWESTERN BELL – no yes
817-963 AT&T SOUTHWESTERN BELL – no yes
817-967 AT&T SOUTHWESTERN BELL – no yes
817-990 COMMIO, LLC 2023-12-21 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
SOUTHWESTERN BELL AT&T 28 59.6%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 4 8.5%
GRANDE COMMUNICATIONS NETWORKS, INC. - TX – 3 6.4%
ONVOY, LLC - TX Onvoy 3 6.4%
LEVEL 3 OF TELECOM OF TEXAS, LLC - TX Lumen 2 4.3%
TELEPORT COMMUNICATIONS AMERICA, LLC - TX AT&T 2 4.3%
LEVEL 3 COMMUNICATIONS, LLC - TX Lumen 2 4.3%
AT&T - LOCAL AT&T 1 2.1%
PAETEC ITEL, LLC Windstream 1 2.1%
COMMIO, LLC – 1 2.1%

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 EULESS in area code 817?

47 blocks: 267, 268, 280, 282, 283, 285, 318, 354, 355, 358, 359, 362 and 35 more, all listed in the table above.

Which carriers have numbers in EULESS?

SOUTHWESTERN BELL (28 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (4 blocks), GRANDE COMMUNICATIONS NETWORKS, INC. - TX (3 blocks), ONVOY, LLC - TX (3 blocks), LEVEL 3 OF TELECOM OF TEXAS, LLC - TX (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - TX (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is EULESS 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 817

All 781 prefixes in 817