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

BORDER prefixes in area code 307

NANPA records 4 assigned NXX blocks to rate center BORDER in area code 307, 0.8% of the 499 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. 4 holders hold those blocks, the largest being BANDWIDTH.COM CLEC, LLC - WY (1), LEVEL 3 COMMUNICATIONS, LLC - WY (1), ONVOY, LLC - WY (1). The earliest assignment on record here is 2006-06-21 and the most recent 2022-07-19. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.8% of 307
4 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
307-230 Bandwidth BANDWIDTH.COM CLEC, LLC - WY 2022-07-19 yes yes
307-392 Lumen LEVEL 3 COMMUNICATIONS, LLC - WY 2006-06-21 yes yes
307-500 Onvoy ONVOY, LLC - WY 2021-02-05 yes yes
307-849 Lumen QWEST CORPORATION – 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
BANDWIDTH.COM CLEC, LLC - WY Bandwidth 1 25%
LEVEL 3 COMMUNICATIONS, LLC - WY Lumen 1 25%
ONVOY, LLC - WY Onvoy 1 25%
QWEST CORPORATION Lumen 1 25%

Frequently asked

Which prefixes belong to BORDER in area code 307?

4 blocks: 230, 392, 500, 849. The table above gives the holder of each.

Which carriers have numbers in BORDER?

BANDWIDTH.COM CLEC, LLC - WY (1 block), LEVEL 3 COMMUNICATIONS, LLC - WY (1 block), ONVOY, LLC - WY (1 block), QWEST CORPORATION (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is BORDER 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 307

All 499 prefixes in 307