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

KAPLAN prefixes in area code 337

NANPA records 4 assigned NXX blocks to rate center KAPLAN in area code 337, 0.7% of the 599 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 KAPLAN TEL. CO. (3), COMCAST IP PHONE, LLC (1). 1 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.7% of 337
2 holders of record
1 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
337-225 KAPLAN TEL. CO. – no yes
337-285 Comcast COMCAST IP PHONE, LLC – yes yes
337-643 KAPLAN TEL. CO. – no yes
337-652 KAPLAN TEL. CO. – 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
KAPLAN TEL. CO. – 3 75%
COMCAST IP PHONE, LLC Comcast 1 25%

Frequently asked

Which prefixes belong to KAPLAN in area code 337?

4 blocks: 225, 285, 643, 652. The table above gives the holder of each.

Which carriers have numbers in KAPLAN?

KAPLAN TEL. CO. (3 blocks), COMCAST IP PHONE, 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 KAPLAN 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 337

All 599 prefixes in 337