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

MILFORDCTR prefixes in area code 937

NANPA records 3 assigned NXX blocks to rate center MILFORDCTR in area code 937, 0.4% of the 781 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. 3 holders hold those blocks, the largest being ONVOY, LLC - OH (1), BRIGHTSPEED OF NORTHWEST OHIO, INC. (1), TWILIO INTERNATIONAL, INC. (1). The earliest assignment on record here is 2016-04-07 and the most recent 2020-05-28. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

3 assigned blocks – 0.4% of 937
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
937-230 Onvoy ONVOY, LLC - OH 2016-04-07 yes yes
937-349 Brightspeed BRIGHTSPEED OF NORTHWEST OHIO, INC. – yes yes
937-984 Twilio TWILIO INTERNATIONAL, INC. 2020-05-28 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
ONVOY, LLC - OH Onvoy 1 33.3%
BRIGHTSPEED OF NORTHWEST OHIO, INC. Brightspeed 1 33.3%
TWILIO INTERNATIONAL, INC. Twilio 1 33.3%

Frequently asked

Which prefixes belong to MILFORDCTR in area code 937?

3 blocks: 230, 349, 984. The table above gives the holder of each.

Which carriers have numbers in MILFORDCTR?

ONVOY, LLC - OH (1 block), BRIGHTSPEED OF NORTHWEST OHIO, INC. (1 block), TWILIO INTERNATIONAL, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MILFORDCTR 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 937

All 781 prefixes in 937