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

WATERTOWN prefixes in area code 315

NANPA records 35 assigned NXX blocks to rate center WATERTOWN in area code 315, 4.5% of the 781 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. 11 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY (7), VERIZON NEW YORK, INC. (7), PAETEC ITEL, LLC (4). The earliest assignment on record here is 2003-02-18 and the most recent 2014-10-31. 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 605, 615, 617, 629 – overlay codes cover the same geography, so a rate center is served by all of them.

35 assigned blocks – 4.5% of 315
11 holders of record
22 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
315-221 AT&T TC SYSTEMS, INC. - NY – yes yes
315-222 Windstream PAETEC ITEL, LLC – yes yes
315-286 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC – no yes
315-321 CONTACT COMMUNICATIONS, INC. 2003-11-04 no yes
315-405 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY – yes yes
315-408 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY – yes yes
315-486 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC – no yes
315-489 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NY – yes yes
315-523 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NY – yes yes
315-586 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY – yes yes
315-608 NORTHLAND NETWORKS, LTD. - NY – yes yes
315-661 Windstream PAETEC ITEL, LLC – yes yes
315-681 Lumen LEVEL 3 COMMUNICATIONS, LLC - NY – yes yes
315-755 WESTELCOM NETWORK, INC. - NY 2003-02-18 yes yes
315-767 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY – yes yes
315-771 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC – no yes
315-772 AT&T TC SYSTEMS, INC. - NY – no yes
315-773 Verizon VERIZON NEW YORK, INC. – no yes
315-774 AT&T TC SYSTEMS, INC. - NY – no yes
315-775 Verizon VERIZON NEW YORK, INC. – yes yes
315-777 WESTELCOM NETWORK, INC. - NY 2006-08-08 yes yes
315-778 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY – no yes
315-779 Verizon VERIZON NEW YORK, INC. – yes yes
315-782 Verizon VERIZON NEW YORK, INC. – no yes
315-783 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY – no yes
315-785 Verizon VERIZON NEW YORK, INC. – no yes
315-786 Verizon VERIZON NEW YORK, INC. – yes yes
315-788 Verizon VERIZON NEW YORK, INC. – no yes
315-804 Lumen LEVEL 3 COMMUNICATIONS, LLC - NY 2006-04-26 yes yes
315-816 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 2011-07-11 yes yes
315-836 Windstream PAETEC ITEL, LLC – yes yes
315-844 CONTACT COMMUNICATIONS, INC. – no yes
315-921 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NY – yes yes
315-955 Windstream PAETEC ITEL, LLC – yes yes
315-965 Lumen CENTURYLINK COMMUNICATIONS, LLC 2014-10-31 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
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY Verizon 7 20%
VERIZON NEW YORK, INC. Verizon 7 20%
PAETEC ITEL, LLC Windstream 4 11.4%
TC SYSTEMS, INC. - NY AT&T 3 8.6%
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 3 8.6%
OMNIPOINT COMMUNICATIONS, INC. - NY T-Mobile 3 8.6%
CONTACT COMMUNICATIONS, INC. – 2 5.7%
LEVEL 3 COMMUNICATIONS, LLC - NY Lumen 2 5.7%
WESTELCOM NETWORK, INC. - NY – 2 5.7%
NORTHLAND NETWORKS, LTD. - NY – 1 2.9%
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 2.9%

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 WATERTOWN in area code 315?

35 blocks: 221, 222, 286, 321, 405, 408, 486, 489, 523, 586, 608, 661 and 23 more, all listed in the table above.

Which carriers have numbers in WATERTOWN?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY (7 blocks), VERIZON NEW YORK, INC. (7 blocks), PAETEC ITEL, LLC (4 blocks), TC SYSTEMS, INC. - NY (3 blocks), NEW CINGULAR WIRELESS PCS, LLC - DC (3 blocks), OMNIPOINT COMMUNICATIONS, INC. - NY (3 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WATERTOWN 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 315

All 781 prefixes in 315