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

CLERMONT prefixes in area code 513

NANPA records 20 assigned NXX blocks to rate center CLERMONT in area code 513, 2.6% of the 784 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. 8 holders hold those blocks, the largest being CINCINNATI BELL (11), BANDWIDTH.COM CLEC, LLC - OH (2), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH (2). The earliest assignment on record here is 2013-06-06 and the most recent 2021-09-09. 10 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 codes 283, 352, 470, 563 – overlay codes cover the same geography, so a rate center is served by all of them.

20 assigned blocks – 2.6% of 513
8 holders of record
10 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
513-201 Windstream PAETEC ITEL, LLC – yes yes
513-286 Lumen LEVEL 3 COMMUNICATIONS, LLC - OH – yes yes
513-449 Bandwidth BANDWIDTH.COM CLEC, LLC - OH 2015-05-07 yes yes
513-495 Altafiber CINCINNATI BELL 2013-06-06 yes yes
513-528 Altafiber CINCINNATI BELL – no yes
513-553 Altafiber CINCINNATI BELL – no yes
513-685 Lumen LEVEL 3 TELECOM OF OHIO, LLC - OH – yes yes
513-688 Altafiber CINCINNATI BELL – no yes
513-718 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH – yes yes
513-732 Altafiber CINCINNATI BELL – no yes
513-735 Altafiber CINCINNATI BELL – no yes
513-750 Bandwidth BANDWIDTH.COM CLEC, LLC - OH 2020-08-14 yes yes
513-752 Altafiber CINCINNATI BELL – no yes
513-753 Altafiber CINCINNATI BELL – no yes
513-797 Altafiber CINCINNATI BELL – no yes
513-843 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH – yes yes
513-902 Telnyx TELNYX LLC 2021-09-09 yes yes
513-943 Altafiber CINCINNATI BELL – no yes
513-947 Altafiber CINCINNATI BELL – no yes
513-986 Onvoy ONVOY, LLC - OH 2015-08-28 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
CINCINNATI BELL Altafiber 11 55%
BANDWIDTH.COM CLEC, LLC - OH Bandwidth 2 10%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH Verizon 2 10%
PAETEC ITEL, LLC Windstream 1 5%
LEVEL 3 COMMUNICATIONS, LLC - OH Lumen 1 5%
LEVEL 3 TELECOM OF OHIO, LLC - OH Lumen 1 5%
TELNYX LLC Telnyx 1 5%
ONVOY, LLC - OH Onvoy 1 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 CLERMONT in area code 513?

20 blocks: 201, 286, 449, 495, 528, 553, 685, 688, 718, 732, 735, 750 and 8 more, all listed in the table above.

Which carriers have numbers in CLERMONT?

CINCINNATI BELL (11 blocks), BANDWIDTH.COM CLEC, LLC - OH (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH (2 blocks), PAETEC ITEL, LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - OH (1 block), LEVEL 3 TELECOM OF OHIO, LLC - OH (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CLERMONT 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 513

All 784 prefixes in 513