NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
— 570-641 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 POTTSVILLE PA
— 570-642 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PLEASANTMT PA
— 570-643 not yet reported which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 POCONOLAKE PA
— 570-644 8XXX9XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 SHAMOKIN PA
— 570-645 not yet reported which blocks → WINDSTREAM PENNSYLVANIA, INC. 0176 LANSFORD PA
— 570-646 not yet reported which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 POCONOLAKE PA
— 570-647 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J HONESDALE PA
— 570-648 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 SHAMOKIN PA
— 570-649 1XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → WINDSTREAM PENNSYLVANIA, INC. 0176 TURBOTVL PA
— 570-650 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PITTSTON PA
— 570-651 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 WILLIAMSPT PA
— 570-654 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PITTSTON PA
— 570-655 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 PITTSTON PA
— 570-658 0XXX1XXX5XXX8XXX9XXX · 5 holders which blocks → VERIZON NORTH, INC. - PA (CONTEL) 0170 BEAVER SPG PA
— 570-659 1XXX2XXX6XXX7XXX · 2 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 COVINGTON PA
— 570-660 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LOCK HAVEN PA
— 570-662 5XXX which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 MANSFIELD PA
— 570-663 1XXX5XXX6XXX7XXX · 3 holders which blocks → CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY 0096 QUAKERLAKE PA
— 570-668 not yet reported which blocks → VERIZON PENNSYLVANIA, INC. 9208 TAMAQUA PA
— 570-669 1XXX3XXX7XXX8XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 NESQUHONNG PA
— 570-670 not yet reported which blocks → SPOK, INC. 6630 SCRANTON PA
— 570-672 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 ELYSBURG PA
— 570-673 0XXX1XXX2XXX · 3 holders which blocks → FRONTIER COMMUNICATIONS OF CANTON, LLC 0152 CANTON PA
— 570-674 not yet reported which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 DALLAS PA
— 570-675 not yet reported which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 DALLAS PA
— 570-676 1XXX2XXX6XXX7XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 NEWFOUNDLD PA
— 570-677 7XXX8XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 SCRANTON PA
— 570-678 1XXX2XXX4XXX6XXX8XXX · 5 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 NUANGOLA PA
— 570-679 not yet reported which blocks → NORTH EASTERN PENNSYLVANIA TEL. CO. 0191 UNION DALE PA
— 570-682 5XXX6XXX7XXX · 2 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 VALLEYVIEW PA
— 570-683 1XXX2XXX3XXX4XXX7XXX · 5 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 ORANGEVL PA
— 570-685 not yet reported which blocks → LACKAWAXEN TELECOMMUNICATIONS SERVICES, INC. 0177 ROWLAND PA
— 570-686 0XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON NORTH, INC. - PA (QUAKER ST) 0201 MILFORD PA
— 570-688 none assigned yet which blocks → VERIZON PENNSYLVANIA, INC. 9208 STROUDSBG PA
— 570-689 1XXX6XXX8XXX · 2 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 HAMLIN PA
— 570-690 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 TRUCKSVL PA
— 570-693 6XXX7XXX9XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 WYOMING PA
— 570-694 6XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WYOMING PA
— 570-695 1XXX5XXX6XXX7XXX · 3 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 TREMONT PA
— 570-696 not yet reported which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 TRUCKSVL PA
— 570-697 0XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 WYOMING PA
— 570-698 1XXX2XXX3XXX4XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 LAKE ARIEL PA
— 570-699 4XXX6XXX7XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 TOWANDA PA
— 570-700 not yet reported which blocks → PA
— 570-704 3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WILKSBARRE PA
— 570-705 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 RINGTOWN PA
— 570-706 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AT&T - LOCAL 7421 WILKSBARRE PA
— 570-707 0XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - PA 547E TIOGA PA
— 570-708 4XXX5XXX6XXX · 3 holders which blocks → COMMONWEALTH TELEPHONE COMPANY LLC 0161 CNYNGHDRMS PA
— 570-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.