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

ASSONET prefixes in area code 774

NANPA records 3 assigned NXX blocks to rate center ASSONET in area code 774, 0.6% of the 522 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 - MA (1), ONVOY SPECTRUM, LLC (1), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1). The earliest assignment on record here is 2006-02-02 and the most recent 2021-03-17. 3 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 508 – overlay codes cover the same geography, so a rate center is served by all of them.

3 assigned blocks – 0.6% of 774
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
774-367 Onvoy ONVOY, LLC - MA – yes yes
774-747 Charter ONVOY SPECTRUM, LLC 2021-03-17 yes yes
774-855 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2006-02-02 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 - MA Onvoy 1 33.3%
ONVOY SPECTRUM, LLC Charter 1 33.3%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 33.3%

Frequently asked

Which prefixes belong to ASSONET in area code 774?

3 blocks: 367, 747, 855. The table above gives the holder of each.

Which carriers have numbers in ASSONET?

ONVOY, LLC - MA (1 block), ONVOY SPECTRUM, LLC (1 block), MCIMETRO ACCESS TRANSMISSION SERVICES 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 ASSONET 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 774

All 522 prefixes in 774