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 607
VERIZON NEW YORK, INC. 111
TWC IP ENABLED SERVICES, LLC 51
CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 50
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 34
ONVOY, LLC- NY 33
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 607-291 0XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ETNA NY
— 607-292 0XXX1XXX2XXX4XXX5XXX8XXX · 3 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 WAYNE NY
— 607-293 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 HARTWICK NY
— 607-294 0XXX4XXX9XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K INTERLAKEN NY
— 607-295 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 ARKPORT NY
— 607-299 3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J CORTLAND NY
— 607-300 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C AVOCA NY
— 607-310 0XXX1XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 CORTLAND NY
— 607-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 607-316 7XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NORWICH NY
— 607-319 0–9 XXXall 10 · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K ITHACA NY
— 607-321 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 ENDICOTT NY
— 607-322 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TC SYSTEMS, INC. - NY 7140 COOPERSTN NY
— 607-324 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 HORNELL NY
— 607-326 0XXX1XXX2XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 ROXBURY NY
— 607-327 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ITHACA NY
— 607-330 not yet reported which blocks → PAETEC ITEL, LLC 829J ITHACA NY
— 607-334 not yet reported which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 NORWICH NY
— 607-335 4XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 NORWICH NY
— 607-336 not yet reported which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 NORWICH NY
— 607-337 0XXX8XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 NORWICH NY
— 607-338 0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → TC SYSTEMS, INC. - NY 7140 BINGHAMTON NY
— 607-340 0–9 XXXall 10 · 7 holders which blocks → ONVOY SPECTRUM, LLC 624H ENDICOTT NY
— 607-341 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ENDICOTT NY
— 607-342 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → TC SYSTEMS, INC. - NY 7140 ITHACA NY
— 607-343 none assigned yet which blocks → METROPCS, INC. 5562 BINGHAMTON NY
— 607-344 1XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J CORTLAND NY
— 607-345 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CORTLAND NY
— 607-346 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 CORNING NY
— 607-347 3XXX5XXX8XXX · 3 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 ETNA NY
— 607-352 0XXX2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BINGHAMTON NY
— 607-354 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E OWEGO NY
— 607-355 not yet reported which blocks → PAETEC ITEL, LLC 829J BINGHAMTON NY
— 607-356 not yet reported which blocks → ARMSTRONG TEL. CO. - NY 0071 WHITESVL NY
— 607-358 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TELNYX LLC 073H BIG FLATS NY
— 607-359 not yet reported which blocks → ARMSTRONG TEL. CO. - NY 0071 ADDISON NY
— 607-363 0XXX3XXX4XXX5XXX8XXX · 5 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 DOWNSVILLE NY
— 607-368 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 CORNING NY
— 607-369 1XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 UNADILLA NY
— 607-375 0XXX1XXX3XXX7XXX8XXX · 3 holders which blocks → TC SYSTEMS, INC. - NY 7140 ITHACA NY
— 607-376 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → TC SYSTEMS, INC. - NY 7140 ONEONTA NY
— 607-377 0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → TC SYSTEMS, INC. - NY 7140 CORNING NY
— 607-378 3XXX7XXX8XXX9XXX · 3 holders which blocks → TC SYSTEMS, INC. - NY 7140 ELMIRA NY
— 607-379 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ITHACA NY
— 607-382 4XXX5XXX6XXX7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 HORNELL NY
— 607-387 not yet reported which blocks → TRUMANSBURG TELEPHONE COMPANY, INC. 0131 TRUMANSBG NY
— 607-391 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → PAETEC ITEL, LLC 829J ITHACA NY
— 607-397 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 WORCESTER NY
— 607-398 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ELMIRA NY
— 607-400 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C HARTWICK 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.