NumberResearch Membership · Data 09/21/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026

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, last 30 days
8X8, INC. 38
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
— 716-491 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BUFFALO NY
— 716-492 0XXX6XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 ARCADE NY
— 716-496 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 CHAFFEE NY
— 716-498 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MACHIAS NY
— 716-499 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 JAMESTOWN NY
— 716-501 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TC SYSTEMS, INC. - NY 7140 NIAGARAFLS NY
— 716-504 0XXX2XXX7XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 TONAWANDA NY
— 716-505 0XXX4XXX6XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 TONAWANDA NY
— 716-507 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BUFFALO NY
— 716-510 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BUFFALO NY
— 716-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 716-513 0XXX2XXX4XXX6XXX8XXX9XXX · 4 holders which blocks → TC SYSTEMS, INC. - NY 7140 NIAGARAFLS NY
— 716-514 0XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TC SYSTEMS, INC. - NY 7140 LOCKPORT NY
— 716-515 5XXX8XXX which blocks → TC SYSTEMS, INC. - NY 7140 BUFFALO NY
— 716-517 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → TC SYSTEMS, INC. - NY 7140 BUFFALO NY
— 716-522 not yet reported which blocks → SPOK, INC. 6630 TONAWANDA NY
— 716-523 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 TONAWANDA NY
— 716-524 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NIAGARAFLS NY
— 716-531 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → TC SYSTEMS, INC. - NY 7140 TONAWANDA NY
— 716-532 7XXX8XXX · 2 holders which blocks → VERIZON NEW YORK, INC. 9104 GOWANDA NY
— 716-536 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BUFFALO NY
— 716-537 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 HOLLAND NY
— 716-539 0XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ORCHARD PK NY
— 716-540 not yet reported which blocks → PAETEC ITEL, LLC 829J BUFFALO NY
— 716-541 4XXX5XXX7XXX8XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 7133 BUFFALO NY
— 716-542 8XXX which blocks → VERIZON NEW YORK, INC. 9104 AKRON NY
— 716-543 3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 OLEAN NY
— 716-549 8XXX which blocks → VERIZON NEW YORK, INC. 9104 ANGOLA NY
— 716-550 0XXX1XXX2XXX3XXX6XXX7XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 TONAWANDA NY
— 716-551 0XXX1XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 BUFFALO NY
— 716-553 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BUFFALO NY
— 716-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST NY
— 716-556 not yet reported which blocks → SPOK, INC. 6630 TONAWANDA NY
— 716-557 0XXX1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 HINSDALE NY
— 716-558 0XXX1XXX2XXX4XXX6XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WESTSENECA NY
— 716-559 0XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 BUFFALO NY
— 716-560 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BUFFALO NY
— 716-562 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 DERBY NY
— 716-564 1XXX7XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 TONAWANDA NY
— 716-565 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 WILLIAMSVL NY
— 716-566 0XXX8XXX which blocks → PAETEC ITEL, LLC 829J BUFFALO NY
— 716-567 0XXX1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → WINDSTREAM NEW YORK, INC. - JAMESTOWN 0109 BEMUSPOINT NY
— 716-568 4XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 WILLIAMSVL NY
— 716-569 0XXX1XXX · 2 holders which blocks → WINDSTREAM NEW YORK, INC. - JAMESTOWN 0109 FREWSBURG NY
— 716-570 none assigned yet which blocks → METROPCS, INC. 5562 BUFFALO NY
— 716-572 0XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BUFFALO NY
— 716-573 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BUFFALO NY
— 716-574 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BUFFALO NY
— 716-580 0XXX1XXX2XXX3XXX7XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 WILLIAMSVL NY
— 716-583 none assigned yet which blocks → METROPCS, INC. 5562 TONAWANDA NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.