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

WILMINGTON prefixes in area code 978

NANPA records 25 assigned NXX blocks to rate center WILMINGTON in area code 978, 3.2% 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. 10 holders hold those blocks, the largest being VERIZON NEW ENGLAND INC. (6), PAETEC ITEL, LLC (4), BANDWIDTH.COM CLEC, LLC - MA (4). The earliest assignment on record here is 2001-05-03 and the most recent 2002-10-25. 22 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 302, 326, 472, 518 – overlay codes cover the same geography, so a rate center is served by all of them.

25 assigned blocks – 3.2% of 978
10 holders of record
22 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
978-203 Windstream PAETEC ITEL, LLC – yes yes
978-205 Bandwidth BANDWIDTH.COM CLEC, LLC - MA – yes yes
978-229 Lumen LEVEL 3 COMMUNICATIONS, LLC - MA – yes yes
978-253 Windstream PAETEC ITEL, LLC 2001-05-03 yes yes
978-267 Bandwidth BANDWIDTH.COM CLEC, LLC - MA – yes yes
978-284 Verizon VERIZON NEW ENGLAND INC. – yes yes
978-315 Peerless PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA – yes yes
978-404 T-Mobile METROPCS, INC. 2002-10-25 yes yes
978-444 Bandwidth BANDWIDTH.COM CLEC, LLC - MA – yes yes
978-447 Comcast COMCAST IP PHONE, LLC – yes yes
978-520 Windstream PAETEC ITEL, LLC 2001-05-08 yes yes
978-527 Lumen LEVEL 3 COMMUNICATIONS, LLC - MA – yes yes
978-570 AT&T TC SYSTEMS, INC. – yes yes
978-604 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 2001-09-13 yes yes
978-642 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
978-657 Verizon VERIZON NEW ENGLAND INC. – no yes
978-658 Verizon VERIZON NEW ENGLAND INC. – no yes
978-661 Verizon VERIZON NEW ENGLAND INC. – yes yes
978-694 Verizon VERIZON NEW ENGLAND INC. – yes yes
978-737 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
978-752 Windstream PAETEC ITEL, LLC – yes yes
978-753 AT&T TC SYSTEMS, INC. – yes yes
978-909 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
978-924 Bandwidth BANDWIDTH.COM CLEC, LLC - MA – yes yes
978-988 Verizon VERIZON NEW ENGLAND INC. – no 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 6 24%
PAETEC ITEL, LLC Windstream 4 16%
BANDWIDTH.COM CLEC, LLC - MA Bandwidth 4 16%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 3 12%
LEVEL 3 COMMUNICATIONS, LLC - MA Lumen 2 8%
TC SYSTEMS, INC. AT&T 2 8%
PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA Peerless 1 4%
METROPCS, INC. T-Mobile 1 4%
COMCAST IP PHONE, LLC Comcast 1 4%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA Verizon 1 4%

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 WILMINGTON in area code 978?

25 blocks: 203, 205, 229, 253, 267, 284, 315, 404, 444, 447, 520, 527 and 13 more, all listed in the table above.

Which carriers have numbers in WILMINGTON?

VERIZON NEW ENGLAND INC. (6 blocks), PAETEC ITEL, LLC (4 blocks), BANDWIDTH.COM CLEC, LLC - MA (4 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (3 blocks), LEVEL 3 COMMUNICATIONS, LLC - MA (2 blocks), TC SYSTEMS, INC. (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WILMINGTON 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