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

PLAINSBORO prefixes in area code 609

NANPA records 15 assigned NXX blocks to rate center PLAINSBORO in area code 609, 1.9% of the 780 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. 9 holders hold those blocks, the largest being VERIZON NEW JERSEY, INC. (6), LEVEL 3 COMMUNICATIONS, LLC - NJ (2), COMCAST IP PHONE, LLC (1). The earliest assignment on record here is 2001-06-18 and the most recent 2023-11-13. 9 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 640 – overlay codes cover the same geography, so a rate center is served by all of them.

15 assigned blocks – 1.9% of 609
9 holders of record
9 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
609-269 Comcast COMCAST IP PHONE, LLC – yes yes
609-275 Verizon VERIZON NEW JERSEY, INC. – no yes
609-297 Lumen LEVEL 3 COMMUNICATIONS, LLC - NJ – yes yes
609-378 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ – yes yes
609-446 Altice CABLEVISION LIGHTPATH, INC. - NJ 2023-11-13 yes yes
609-606 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - NJ – yes yes
609-716 Verizon VERIZON NEW JERSEY, INC. – no yes
609-721 T-Mobile OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 2001-06-18 yes yes
609-750 Verizon VERIZON NEW JERSEY, INC. – no yes
609-779 Windstream PAETEC ITEL, LLC 2001-10-04 yes yes
609-785 CSC VOICE, LLC – yes yes
609-799 Verizon VERIZON NEW JERSEY, INC. – no yes
609-853 Lumen LEVEL 3 COMMUNICATIONS, LLC - NJ – yes yes
609-897 Verizon VERIZON NEW JERSEY, INC. – no yes
609-936 Verizon VERIZON NEW JERSEY, INC. – 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
VERIZON NEW JERSEY, INC. Verizon 6 40%
LEVEL 3 COMMUNICATIONS, LLC - NJ Lumen 2 13.3%
COMCAST IP PHONE, LLC Comcast 1 6.7%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ Verizon 1 6.7%
CABLEVISION LIGHTPATH, INC. - NJ Altice 1 6.7%
TELEPORT COMMUNICATIONS AMERICA, LLC - NJ AT&T 1 6.7%
OMNIPOINT COMMUNICATIONS ENTERPRISES, LP T-Mobile 1 6.7%
PAETEC ITEL, LLC Windstream 1 6.7%
CSC VOICE, LLC – 1 6.7%

Frequently asked

Which prefixes belong to PLAINSBORO in area code 609?

15 blocks: 269, 275, 297, 378, 446, 606, 716, 721, 750, 779, 785, 799 and 3 more, all listed in the table above.

Which carriers have numbers in PLAINSBORO?

VERIZON NEW JERSEY, INC. (6 blocks), LEVEL 3 COMMUNICATIONS, LLC - NJ (2 blocks), COMCAST IP PHONE, LLC (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ (1 block), CABLEVISION LIGHTPATH, INC. - NJ (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - NJ (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is PLAINSBORO 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 609

All 780 prefixes in 609