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

SCHENCTADY prefixes in area code 518

NANPA records 50 assigned NXX blocks to rate center SCHENCTADY in area code 518, 6.5% of the 775 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. 13 holders hold those blocks, the largest being VERIZON NEW YORK, INC. (25), PAETEC ITEL, LLC (6), TWC IP ENABLED SERVICES, LLC (3). The earliest assignment on record here is 2001-04-16 and the most recent 2019-10-11. 33 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 code 838 – overlay codes cover the same geography, so a rate center is served by all of them.

50 assigned blocks – 6.5% of 518
13 holders of record
33 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
518-243 AT&T TC SYSTEMS, INC. - NY – yes yes
518-280 Windstream PAETEC ITEL, LLC – yes yes
518-341 Spok SPOK, INC. – no yes
518-342 Spok SPOK, INC. – no yes
518-344 Verizon VERIZON NEW YORK, INC. – yes yes
518-346 Verizon VERIZON NEW YORK, INC. – no yes
518-347 Verizon VERIZON NEW YORK, INC. – yes yes
518-348 Verizon VERIZON NEW YORK, INC. – yes yes
518-355 Verizon VERIZON NEW YORK, INC. – no yes
518-356 Verizon VERIZON NEW YORK, INC. – no yes
518-357 Verizon VERIZON NEW YORK, INC. – yes yes
518-370 Verizon VERIZON NEW YORK, INC. – yes yes
518-371 Verizon VERIZON NEW YORK, INC. – no yes
518-372 Verizon VERIZON NEW YORK, INC. – no yes
518-373 Verizon VERIZON NEW YORK, INC. – no yes
518-374 Verizon VERIZON NEW YORK, INC. – no yes
518-377 Verizon VERIZON NEW YORK, INC. – no yes
518-379 Verizon VERIZON NEW YORK, INC. 2002-04-18 yes yes
518-381 Verizon VERIZON NEW YORK, INC. – yes yes
518-382 Verizon VERIZON NEW YORK, INC. – no yes
518-383 Verizon VERIZON NEW YORK, INC. – no yes
518-384 Verizon VERIZON NEW YORK, INC. – yes yes
518-385 Windstream PAETEC ITEL, LLC 2001-04-16 no yes
518-386 Verizon VERIZON NEW YORK, INC. – yes yes
518-387 Verizon VERIZON NEW YORK, INC. – yes yes
518-388 Verizon VERIZON NEW YORK, INC. – no yes
518-393 Verizon VERIZON NEW YORK, INC. – no yes
518-395 Verizon VERIZON NEW YORK, INC. – no yes
518-399 Verizon VERIZON NEW YORK, INC. – no yes
518-557 Lumen LEVEL 3 COMMUNICATIONS, LLC - NY – yes yes
518-579 TVC ALBANY, INC. DBA FIRSTLIGHT FIBER – yes yes
518-612 AT&T TC SYSTEMS, INC. - NY – yes yes
518-630 Charter TWC IP ENABLED SERVICES, LLC – yes yes
518-631 Verizon VERIZON NEW YORK, INC. – yes yes
518-688 Windstream PAETEC ITEL, LLC – yes yes
518-707 Onvoy ONVOY, LLC- NY 2015-12-14 yes yes
518-709 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2016-05-02 yes yes
518-723 Windstream PAETEC ITEL, LLC – yes yes
518-831 Windstream PAETEC ITEL, LLC – yes yes
518-836 Windstream PAETEC ITEL, LLC – yes yes
518-847 TVC ALBANY, INC. DBA FIRSTLIGHT FIBER – yes yes
518-878 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NY 2002-05-16 yes yes
518-881 Lumen LEVEL 3 TELECOM OF NEW YORK, LP - NY – yes yes
518-901 Charter TWC IP ENABLED SERVICES, LLC 2016-10-04 yes yes
518-902 Lumen CENTURYLINK COMMUNICATIONS, LLC 2016-10-07 yes yes
518-914 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC 2019-10-11 yes yes
518-930 Charter TWC IP ENABLED SERVICES, LLC 2014-02-11 yes yes
518-952 AT&T AT&T - LOCAL – yes yes
518-982 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NY – yes yes
518-986 T-Mobile OMNIPOINT COMMUNICATIONS, INC. - NY – 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 YORK, INC. Verizon 25 50%
PAETEC ITEL, LLC Windstream 6 12%
TWC IP ENABLED SERVICES, LLC Charter 3 6%
OMNIPOINT COMMUNICATIONS, INC. - NY T-Mobile 3 6%
TC SYSTEMS, INC. - NY AT&T 2 4%
SPOK, INC. Spok 2 4%
TVC ALBANY, INC. DBA FIRSTLIGHT FIBER – 2 4%
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 2 4%
LEVEL 3 COMMUNICATIONS, LLC - NY Lumen 1 2%
ONVOY, LLC- NY Onvoy 1 2%
LEVEL 3 TELECOM OF NEW YORK, LP - NY Lumen 1 2%
CENTURYLINK COMMUNICATIONS, LLC Lumen 1 2%
AT&T - LOCAL AT&T 1 2%

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 SCHENCTADY in area code 518?

50 blocks: 243, 280, 341, 342, 344, 346, 347, 348, 355, 356, 357, 370 and 38 more, all listed in the table above.

Which carriers have numbers in SCHENCTADY?

VERIZON NEW YORK, INC. (25 blocks), PAETEC ITEL, LLC (6 blocks), TWC IP ENABLED SERVICES, LLC (3 blocks), OMNIPOINT COMMUNICATIONS, INC. - NY (3 blocks), TC SYSTEMS, INC. - NY (2 blocks), SPOK, 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 SCHENCTADY 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 518

All 775 prefixes in 518