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

WESTTOWN prefixes in area code 484

NANPA records 8 assigned NXX blocks to rate center WESTTOWN in area code 484, 1.0% of the 786 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. 5 holders hold those blocks, the largest being ONVOY, LLC - PA (3), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2), LEVEL 3 COMMUNICATIONS, LLC - PA (1). 8 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 610 – overlay codes cover the same geography, so a rate center is served by all of them.

8 assigned blocks – 1% of 484
5 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
484-301 Lumen LEVEL 3 COMMUNICATIONS, LLC - PA – yes yes
484-303 Onvoy ONVOY, LLC - PA – yes yes
484-307 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
484-313 Onvoy ONVOY, LLC - PA – yes yes
484-315 Onvoy ONVOY, LLC - PA – yes yes
484-528 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
484-564 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA – yes yes
484-760 Windstream PAETEC ITEL, LLC – 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 - PA Onvoy 3 37.5%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 2 25%
LEVEL 3 COMMUNICATIONS, LLC - PA Lumen 1 12.5%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA Verizon 1 12.5%
PAETEC ITEL, LLC Windstream 1 12.5%

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 WESTTOWN in area code 484?

8 blocks: 301, 303, 307, 313, 315, 528, 564, 760. The table above gives the holder of each.

Which carriers have numbers in WESTTOWN?

ONVOY, LLC - PA (3 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - PA (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA (1 block), PAETEC ITEL, 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 WESTTOWN 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 484

All 786 prefixes in 484