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
— 518-834 0XXX which blocks → FRONTIER COMMUNICATIONS OF AUSABLE VALLEY, INC. 0072 KEESEVILLE NY
— 518-835 none assigned yet which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 CAROGALAKE NY
— 518-836 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J SCHENCTADY NY
— 518-839 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 AMSTERDAM NY
— 518-841 1XXX2XXX5XXX8XXX which blocks → VERIZON NEW YORK, INC. 9104 AMSTERDAM NY
— 518-842 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 AMSTERDAM NY
— 518-843 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 AMSTERDAM NY
— 518-846 not yet reported which blocks → CHAZY & WESTPORT TEL. CORP. 0079 CHAZY NY
— 518-847 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 SCHENCTADY NY
— 518-850 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 518-851 0XXX1XXX4XXX6XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 CLAVERACK NY
— 518-852 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ALBANY NY
— 518-853 0XXX2XXX6XXX7XXX9XXX · 4 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 FONDA NY
— 518-854 0XXX1XXX2XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 SALEM NY
— 518-855 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 GREENWICH NY
— 518-856 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 STREGISFLS NY
— 518-857 none assigned yet which blocks → METROPCS, INC. 5562 ALBANY NY
— 518-861 0XXX1XXX2XXX3XXX4XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 ALTAMONT NY
— 518-862 8XXX which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-863 3XXX5XXX which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 NORTHVILLE NY
— 518-864 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 MARIAVILLE NY
— 518-865 not yet reported which blocks → SPOK, INC. 6630 COLONIE NY
— 518-867 0XXX1XXX2XXX5XXX6XXX7XXX9XXX which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 COLONIE NY
— 518-868 0XXX1XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 CENTRALBDG NY
— 518-869 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 COLONIE NY
— 518-870 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 ALBANY NY
— 518-872 3XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 BERNE NY
— 518-873 0XXX1XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 ELIZABTHTN NY
— 518-874 0XXX1XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J TROY NY
— 518-875 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 ESPERANCE NY
— 518-876 0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 AMSTERDAM NY
— 518-877 1XXX2XXX which blocks → VERIZON NEW YORK, INC. 9104 JONESVILLE NY
— 518-880 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 TROY NY
— 518-881 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SCHENCTADY NY
— 518-882 0XXX2XXX3XXX4XXX7XXX8XXX · 3 holders which blocks → VERIZON NEW YORK, INC. 9104 GALWAY NY
— 518-883 0XXX1XXX7XXX · 2 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 BROADALBIN NY
— 518-884 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 BALLSTNSPA NY
— 518-885 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 BALLSTNSPA NY
— 518-886 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 SARATOGSPG NY
— 518-887 8XXX which blocks → PATTERSONVILLE TEL. CO. 0116 ROTERDMJCT NY
— 518-888 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C ALBANY NY
— 518-889 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 6 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 BALLSTNSPA NY
— 518-890 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 MARIAVILLE NY
— 518-891 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 SARANAC LK NY
— 518-893 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 GREENFLCTR NY
— 518-895 0XXX1XXX3XXX4XXX5XXX6XXX7XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 DELANSON NY
— 518-897 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON NEW YORK, INC. 9104 SARANAC LK NY
— 518-899 0XXX8XXX which blocks → VERIZON NEW YORK, INC. 9104 ROUND LAKE NY
— 518-900 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC- NY 384C CLARKSVL NY
— 518-907 0XXX1XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 PLATTSBG 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.