NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 917
OMNIPOINT COMMUNICATIONS, INC. - NY 142
NEW CINGULAR WIRELESS PCS, LLC - DC 136
SPOK, INC. 133
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 123
VERIZON NEW YORK, INC. 66
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2012-08-17 917-765 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN06 NY
2012-08-16 917-588 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN07 NY
2012-08-16 917-960 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN06 NY
2012-07-16 917-485 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN11 NY
2012-06-22 917-565 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN04 NY
2012-05-07 917-962 0–9 XXXall 10 · 5 holders which blocks → CSC VOICE, LLC 612K NWYRCYZN03 NY
2012-04-19 917-635 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN06 NY
2012-04-09 917-891 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN03 NY
2012-04-06 917-732 0–9 XXXall 10 · 5 holders which blocks → TELENGY L.L.C. - NY 473G NWYRCYZN09 NY
2012-03-22 917-819 0–9 XXXall 10 · 5 holders which blocks → CSC VOICE, LLC 612K NWYRCYZN03 NY
2012-03-13 917-480 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN12 NY
2012-03-09 917-391 0–9 XXXall 10 · 5 holders which blocks → TELENGY L.L.C. - NY 473G NWYRCYZN08 NY
2012-03-05 917-982 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NWYRCYZN06 NY
2012-03-02 917-808 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 NWYRCYZN07 NY
2012-03-02 917-942 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 NWYRCYZN12 NY
2012-03-02 917-943 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2012-03-02 917-963 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN09 NY
2012-02-06 917-702 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN07 NY
2012-01-27 917-426 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NWYRCYZN14 NY
2012-01-23 917-795 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 NWYRCYZN04 NY
2011-12-27 917-722 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NWYRCYZN14 NY
2011-12-13 917-768 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN01 NY
2011-12-13 917-870 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 NWYRCYZN03 NY
2011-11-11 917-831 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN14 NY
2011-11-09 917-618 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN06 NY
2011-11-01 917-436 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN07 NY
2011-10-13 917-525 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN15 NY
2011-10-13 917-746 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN01 NY
2011-10-11 917-564 0–9 XXXall 10 · 2 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NWYRCYZN03 NY
2011-10-11 917-688 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN03 NY
2011-10-11 917-792 0–9 XXXall 10 · 3 holders which blocks → CSC VOICE, LLC 612K NWYRCYZN03 NY
2011-10-10 917-580 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN04 NY
2011-09-20 917-231 0–9 XXXall 10 · 4 holders which blocks → YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN06 NY
2011-08-05 917-283 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN12 NY
2011-06-29 917-736 0–9 XXXall 10 · 2 holders which blocks → PAETEC ITEL, LLC 829J NWYRCYZN03 NY
2011-04-01 917-745 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NWYRCYZN08 NY
2011-04-01 917-830 0–9 XXXall 10 · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NWYRCYZN14 NY
2011-03-25 917-524 0–9 XXXall 10 · 3 holders which blocks → YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN14 NY
2011-02-01 917-737 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN03 NY
2010-12-23 917-563 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NWYRCYZN09 NY
2010-12-16 917-396 0–9 XXXall 10 · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NWYRCYZN08 NY
2010-11-23 917-503 0–9 XXXall 10 · 2 holders which blocks → YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN01 NY
2010-10-22 917-397 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN14 NY
2010-10-15 917-387 0–9 XXXall 10 · 4 holders which blocks → YMAX COMMUNICATIONS CORP. - NY 282E NWYRCYZN12 NY
2010-10-05 917-341 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN09 NY
2010-10-05 917-382 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN08 NY
2010-10-05 917-383 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN04 NY
2010-10-04 917-200 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN07 NY
2010-10-04 917-300 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN10 NY
2010-10-04 917-310 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN06 NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.