NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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, last 30 days
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 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
— 518-910 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 518-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 518-915 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ALBANY NY
— 518-922 2XXX3XXX · 2 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 GLEN NY
— 518-923 not yet reported which blocks → CONTACT COMMUNICATIONS, INC. 4721 SARANAC LK NY
— 518-924 0XXX1XXX8XXX · 3 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 WELLS NY
— 518-926 0XXX8XXX9XXX which blocks → VERIZON NEW YORK, INC. 9104 GLENSFALLS NY
— 518-927 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 518-931 0XXX1XXX4XXX6XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K NASSAU NY
— 518-932 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 TELECOM OF NEW YORK, LP - NY 8473 GLENSFALLS NY
— 518-934 0XXX1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → PRIMELINK, INC. - NY 0065 SARATOGSPG NY
— 518-935 0XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J ALBANY NY
— 518-936 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WESTERLO NY
— 518-942 0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 MINEVILLE NY
— 518-943 8XXX which blocks → VERIZON NEW YORK, INC. 9104 CATSKILL NY
— 518-945 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON NEW YORK, INC. 9104 ATHENS NY
— 518-946 0XXX6XXX · 2 holders which blocks → FRONTIER COMMUNICATIONS OF AUSABLE VALLEY, INC. 0072 WILMINGTON NY
— 518-947 0XXX1XXX2XXX4XXX5XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J CATSKILL NY
— 518-950 not yet reported which blocks → NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.