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 518
VERIZON NEW YORK, INC. 225
PAETEC ITEL, LLC 59
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 58
NEW CINGULAR WIRELESS PCS, LLC - DC 45
TC SYSTEMS, INC. - NY 35
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
— 518-687 1XXX3XXX4XXX5XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J TROY NY
— 518-688 4XXX5XXX6XXX7XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J SCHENCTADY NY
— 518-689 none assigned yet which blocks → PAETEC ITEL, LLC 829J ALBANY NY
— 518-690 3XXX5XXX6XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J COLONIE NY
— 518-691 3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J SARATOGSPG NY
— 518-692 0XXX1XXX3XXX4XXX5XXX6XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 GREENWICH NY
— 518-693 0XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J SARATOGSPG NY
— 518-694 1XXX2XXX6XXX7XXX · 2 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 ALBANY NY
— 518-695 0XXX1XXX2XXX7XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 SCHUYLERVL NY
— 518-696 6XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 LK LUZERNE NY
— 518-697 0XXX1XXX2XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 HUDSON NY
— 518-698 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 COLONIE NY
— 518-699 0XXX1XXX2XXX6XXX7XXX9XXX · 4 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 PLATTSBG NY
— 518-700 not yet reported which blocks → NY
— 518-702 0XXX2XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K MIDDLEBG NY
— 518-710 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 HUDSON NY
— 518-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 518-712 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 AVERILL PK NY
— 518-713 0XXX3XXX4XXX6XXX7XXX8XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J COLONIE NY
— 518-719 2XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 CATSKILL NY
— 518-720 1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 TROY NY
— 518-721 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 CLAVERACK NY
— 518-722 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 OAK HILL NY
— 518-723 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J SCHENCTADY NY
— 518-724 4XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J COLONIE NY
— 518-725 not yet reported which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 GLOVERSVL NY
— 518-727 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
— 518-731 not yet reported which blocks → STATE TEL. CO. 0125 COXSACKIE NY
— 518-732 1XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 CASTLETON NY
— 518-733 not yet reported which blocks → TACONIC TEL. CORP. 0084 STEPHENTN NY
— 518-734 0XXX1XXX2XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 WINDHAM NY
— 518-735 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 LYON MT NY
— 518-736 0XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 JOHNSTOWN NY
— 518-738 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 COLONIE NY
— 518-742 0XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-743 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-744 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 GLENSFALLS NY
— 518-745 9XXX which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-746 0XXX4XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-747 1XXX which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-748 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 GLENSFALLS NY
— 518-750 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 WINDHAM NY
— 518-751 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J HUDSON NY
— 518-753 1XXX2XXX3XXX5XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 VALLEY FLS NY
— 518-754 0XXX2XXX3XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J CASTLETON NY
— 518-755 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 KINDERHOOK NY
— 518-756 not yet reported which blocks → STATE TEL. CO. 0125 RAVENA NY
— 518-758 not yet reported which blocks → BERKSHIRE TEL. CO. 0073 KINDERHOOK NY
— 518-759 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PRIMELINK, INC. - NY 0065 WHITEHALL NY
— 518-761 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS 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.