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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 607-569 7XXX8XXX · 2 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 HAMMONDSPT NY
— 607-582 not yet reported which blocks → EMPIRE TEL. CORP. 0093 LODI NY
— 607-583 0XXX1XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 SAVONA NY
— 607-584 3XXX6XXX · 2 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 BINGHAMTON NY
— 607-587 1XXX5XXX6XXX7XXX · 4 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 ALFRED NY
— 607-588 0XXX1XXX2XXX3XXX4XXX5XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 GRANDGORGE NY
— 607-589 2XXX5XXX8XXX · 3 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 SPENCER NY
— 607-590 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TC SYSTEMS, INC. - NY 7140 HORNELL NY
— 607-591 2XXX3XXX4XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 CORTLAND NY
— 607-592 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ITHACA NY
— 607-594 not yet reported which blocks → EMPIRE TEL. CORP. 0093 ODESSA NY
— 607-597 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J CORTLAND NY
— 607-598 0XXX3XXX4XXX5XXX · 4 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 LOCKWOOD NY
— 607-600 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC- NY 384C CANASERAGA NY
— 607-603 0XXX1XXX3XXX6XXX7XXX8XXX · 3 holders which blocks → NORTHLAND NETWORKS, LTD. - NY 7556 ITHACA NY
— 607-605 0XXX1XXX6XXX · 3 holders which blocks → NORTHLAND NETWORKS, LTD. - NY 7556 CORTLAND NY
— 607-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 607-621 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → TC SYSTEMS, INC. - NY 7140 BINGHAMTON NY
— 607-622 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → TC SYSTEMS, INC. - NY 7140 BATH NY
— 607-625 7XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 APALACHIN NY
— 607-627 0XXX2XXX3XXX5XXX7XXX8XXX · 6 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 SMYRNA NY
— 607-637 not yet reported which blocks → HANCOCK TEL. CO. 0099 HANCOCK NY
— 607-638 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 SCHENEVUS NY
— 607-639 not yet reported which blocks → DEPOSIT TEL. CO., INC. 0089 AFTON NY
— 607-642 6XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 NEWARK VLY NY
— 607-643 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 ONEONTA NY
— 607-644 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BINGHAMTON NY
— 607-645 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 ITHACA NY
— 607-647 3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 MCDONOUGH NY
— 607-648 not yet reported which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 CHENANGBDG NY
— 607-651 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 BINGHAMTON NY
— 607-652 0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 STAMFORD NY
— 607-654 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 CORNING NY
— 607-655 not yet reported which blocks → DEPOSIT TEL. CO., INC. 0089 WINDSOR NY
— 607-656 3XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 GREENE NY
— 607-657 1XXX3XXX5XXX6XXX7XXX · 4 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 BERKSHIRE NY
— 607-658 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 ENDICOTT NY
— 607-659 2XXX6XXX · 2 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 CANDOR NY
— 607-661 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 HORNELL NY
— 607-662 3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 CORTLAND NY
— 607-664 0XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 BATH NY
— 607-666 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC- NY 384C BINGHAMTON NY
— 607-669 2XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 HAWLEYTON NY
— 607-674 0XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 SHERBURNE NY
— 607-684 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CORNING NY
— 607-687 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 OWEGO NY
— 607-689 0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 8 holders which blocks → VERIZON NEW YORK, INC. 9104 OWEGO NY
— 607-692 5XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 WHITNEY PT NY
— 607-693 not yet reported which blocks → DEPOSIT TEL. CO., INC. 0089 HARPURSVL NY
— 607-695 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 CAMERON 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.