NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 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
2014-05-05 518-679 0XXX1XXX2XXX · 3 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 COXSACKIE NY
2014-05-05 518-787 0XXX1XXX7XXX8XXX · 4 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 RAVENA NY
2006-02-23 518-655 0–9 XXXall 10 · 8 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 VOORHEESVL NY
2005-11-10 518-512 0–9 XXXall 10 · 5 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 ALBANY NY
— 518-278 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 JONESVILLE NY
— 518-289 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 8 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 ROUND LAKE NY
— 518-323 0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 SARANAC LK NY
— 518-412 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 ELIZABTHTN NY
— 518-418 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 8 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 LAKEPLACID NY
— 518-540 0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 ALBANY NY
— 518-579 0XXX1XXX6XXX7XXX9XXX · 4 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 SCHENCTADY NY
— 518-586 0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 TICONDROGA NY
— 518-651 0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 2 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 MALONE NY
— 518-652 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 MECHANICVL NY
— 518-659 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 HOOSICKFLS NY
— 518-681 0XXX1XXX2XXX6XXX7XXX9XXX · 2 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 GLENSFALLS NY
— 518-682 0XXX1XXX2XXX6XXX7XXX9XXX · 4 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 SARATOGSPG NY
— 518-685 1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 LAKEGEORGE NY
— 518-694 1XXX2XXX6XXX7XXX · 2 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 ALBANY NY
— 518-697 0XXX1XXX2XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 HUDSON NY
— 518-699 0XXX1XXX2XXX6XXX7XXX9XXX · 4 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 PLATTSBG NY
— 518-712 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 AVERILL PK 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
— 518-750 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 WINDHAM NY
— 518-823 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 COBLESKILL NY
— 518-847 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 SCHENCTADY NY
— 518-867 0XXX1XXX2XXX5XXX6XXX7XXX9XXX which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 COLONIE NY
— 518-876 0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 AMSTERDAM NY
— 518-889 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 BALLSTNSPA NY
— 518-981 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 WILLSBORO NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.