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

TOPSFIELD prefixes in area code 978

NANPA records 8 assigned NXX blocks to rate center TOPSFIELD in area code 978, 1.0% of the 773 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. 6 holders hold those blocks, the largest being VERIZON NEW ENGLAND INC. (2), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2), COMCAST IP PHONE, LLC (1). The earliest assignment on record here is 2003-01-08 and the most recent 2003-01-08. 7 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

8 assigned blocks – 1% of 978
6 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
978-213 Verizon VERIZON NEW ENGLAND INC. – yes yes
978-359 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
978-561 Comcast COMCAST IP PHONE, LLC – yes yes
978-647 Windstream PAETEC ITEL, LLC – yes yes
978-861 Onvoy ONVOY, LLC - MA – yes yes
978-887 Verizon VERIZON NEW ENGLAND INC. – no yes
978-953 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2003-01-08 yes yes
978-986 Lumen LEVEL 3 COMMUNICATIONS, LLC - MA – 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
VERIZON NEW ENGLAND INC. Verizon 2 25%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 2 25%
COMCAST IP PHONE, LLC Comcast 1 12.5%
PAETEC ITEL, LLC Windstream 1 12.5%
ONVOY, LLC - MA Onvoy 1 12.5%
LEVEL 3 COMMUNICATIONS, LLC - MA Lumen 1 12.5%

Frequently asked

Which prefixes belong to TOPSFIELD in area code 978?

8 blocks: 213, 359, 561, 647, 861, 887, 953, 986. The table above gives the holder of each.

Which carriers have numbers in TOPSFIELD?

VERIZON NEW ENGLAND INC. (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2 blocks), COMCAST IP PHONE, LLC (1 block), PAETEC ITEL, LLC (1 block), ONVOY, LLC - MA (1 block), LEVEL 3 COMMUNICATIONS, LLC - MA (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is TOPSFIELD 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 978

All 773 prefixes in 978