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

MARION prefixes in area code 508

NANPA records 4 assigned NXX blocks to rate center MARION in area code 508, 0.5% of the 749 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. 4 holders hold those blocks, the largest being MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1), LEVEL 3 COMMUNICATIONS, LLC - MA (1), PAETEC ITEL, LLC (1). 4 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 220, 223, 231, 270 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.5% of 508
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
508-355 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
508-500 Lumen LEVEL 3 COMMUNICATIONS, LLC - MA – yes yes
508-538 Windstream PAETEC ITEL, LLC – yes yes
508-748 Verizon VERIZON NEW ENGLAND INC. – 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
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 25%
LEVEL 3 COMMUNICATIONS, LLC - MA Lumen 1 25%
PAETEC ITEL, LLC Windstream 1 25%
VERIZON NEW ENGLAND INC. Verizon 1 25%

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 MARION in area code 508?

4 blocks: 355, 500, 538, 748. The table above gives the holder of each.

Which carriers have numbers in MARION?

MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - MA (1 block), PAETEC ITEL, LLC (1 block), VERIZON NEW ENGLAND 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 MARION 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 508

All 749 prefixes in 508