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

CUMBLND HL prefixes in area code 401

NANPA records 19 assigned NXX blocks to rate center CUMBLND HL in area code 401, 3.3% of the 581 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. 5 holders hold those blocks, the largest being OMNIPOINT MIAMI E LICENSE, LLC (14), PAETEC ITEL, LLC (2), COMCAST IP PHONE, LLC (1). The earliest assignment on record here is 2001-04-11 and the most recent 2025-08-19. 19 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

19 assigned blocks – 3.3% of 401
5 holders of record
19 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
401-257 Windstream PAETEC ITEL, LLC – yes yes
401-299 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC 2024-07-30 yes yes
401-306 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC 2021-02-08 yes yes
401-376 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC 2021-08-11 yes yes
401-405 Comcast COMCAST IP PHONE, LLC – yes yes
401-416 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC 2022-01-27 yes yes
401-425 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC 2016-01-12 yes yes
401-426 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC 2010-02-17 yes yes
401-492 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC 2024-01-10 yes yes
401-538 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC 2025-06-11 yes yes
401-540 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC 2025-08-19 yes yes
401-564 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC – yes no
401-658 Verizon VERIZON NEW ENGLAND INC. – yes yes
401-659 Windstream PAETEC ITEL, LLC – yes yes
401-660 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC – yes yes
401-666 Peerless PEERLESS NETWORK OF RHODE ISLAND, LLC - RI 2016-04-06 yes yes
401-692 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC 2001-04-11 yes yes
401-744 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC – yes yes
401-999 T-Mobile OMNIPOINT MIAMI E LICENSE, LLC 2013-01-30 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
OMNIPOINT MIAMI E LICENSE, LLC T-Mobile 14 73.7%
PAETEC ITEL, LLC Windstream 2 10.5%
COMCAST IP PHONE, LLC Comcast 1 5.3%
VERIZON NEW ENGLAND INC. Verizon 1 5.3%
PEERLESS NETWORK OF RHODE ISLAND, LLC - RI Peerless 1 5.3%

Frequently asked

Which prefixes belong to CUMBLND HL in area code 401?

19 blocks: 257, 299, 306, 376, 405, 416, 425, 426, 492, 538, 540, 564 and 7 more, all listed in the table above.

Which carriers have numbers in CUMBLND HL?

OMNIPOINT MIAMI E LICENSE, LLC (14 blocks), PAETEC ITEL, LLC (2 blocks), COMCAST IP PHONE, LLC (1 block), VERIZON NEW ENGLAND INC. (1 block), PEERLESS NETWORK OF RHODE ISLAND, LLC - RI (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is CUMBLND HL 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 401

All 581 prefixes in 401