NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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
— 518-910 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
— 518-951 0XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → AT&T - LOCAL 7421 COLONIE NY
— 518-952 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 SCHENCTADY NY
— 518-953 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → AT&T - LOCAL 7421 TROY NY
— 518-954 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → AT&T - LOCAL 7421 AMSTERDAM NY
— 518-955 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 GLENSFALLS NY
— 518-956 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → AT&T - LOCAL 7421 ALBANY NY
— 518-957 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 PLATTSBG NY
— 518-958 not yet reported which blocks → NY
— 518-959 not yet reported which blocks → NY
— 518-960 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TROY NY
— 518-961 4XXX5XXX7XXX8XXX which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 TROY NY
— 518-962 not yet reported which blocks → CHAZY & WESTPORT TEL. CORP. 0079 WESTPORT NY
— 518-963 0XXX1XXX2XXX3XXX5XXX6XXX9XXX · 7 holders which blocks → VERIZON NEW YORK, INC. 9104 WILLSBORO NY
— 518-964 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J LAKEGEORGE NY
— 518-965 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HUDSON NY
— 518-966 0XXX1XXX2XXX3XXX6XXX7XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 GREENVILLE NY
— 518-970 not yet reported which blocks → NY
— 518-975 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → PRIMELINK, INC. - NY 0065 KEESEVILLE NY
— 518-976 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NY
— 518-979 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 518-981 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 3 holders which blocks → TVC ALBANY, INC. DBA FIRSTLIGHT FIBER 7989 WILLSBORO NY
— 518-982 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SCHENCTADY NY
— 518-983 0–9 XXXall 10 · 10 holders which blocks → ONVOY SPECTRUM, LLC 624H WILLSBORO NY
— 518-984 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → HD CARRIER LLC 321J TICONDROGA NY
— 518-985 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 518-986 7XXX8XXX which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SCHENCTADY NY
— 518-989 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON NEW YORK, INC. 9104 LEXINGTON NY
— 518-993 0XXX1XXX6XXX7XXX8XXX · 5 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 FORT PLAIN NY
— 518-996 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 518-997 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY
— 518-998 not yet reported which blocks → VERIZON NEW YORK, INC. 9104 XXXXXXXXXX NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.