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

RAYWOOD prefixes in area code 936

NANPA records 3 assigned NXX blocks to rate center RAYWOOD in area code 936, 0.7% of the 422 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. 2 holders hold those blocks, the largest being ONVOY, LLC - TX (2), FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (1). The earliest assignment on record here is 2016-03-18 and the most recent 2021-07-06. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.7% of 936
2 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
936-277 Onvoy ONVOY, LLC - TX 2016-03-18 yes yes
936-313 Onvoy ONVOY, LLC - TX 2021-07-06 yes yes
936-587 Frontier FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS – 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
ONVOY, LLC - TX Onvoy 2 66.7%
FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS Frontier 1 33.3%

Frequently asked

Which prefixes belong to RAYWOOD in area code 936?

3 blocks: 277, 313, 587. The table above gives the holder of each.

Which carriers have numbers in RAYWOOD?

ONVOY, LLC - TX (2 blocks), FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is RAYWOOD 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 936

All 422 prefixes in 936