NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
— 302-703 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J LEWES DE
— 302-709 1XXX which blocks → PAETEC ITEL, LLC 829J NEWARK DE
— 302-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX DE
— 302-715 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J LAUREL DE
— 302-721 1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J BRIDGEVL DE
— 302-722 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 NEWARK DE
— 302-723 none assigned yet which blocks → METROPCS, INC. 5562 WILMINGTON DE
— 302-724 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 DOVER DE
— 302-725 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 MILFORD DE
— 302-727 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 REHOBOTH DE
— 302-729 2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HOCKESSIN DE
— 302-730 2XXX6XXX7XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 DOVER DE
— 302-731 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-732 0XXX2XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 DAGSBORO DE
— 302-733 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-734 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 DOVER DE
— 302-735 0XXX which blocks → VERIZON DELAWARE, INC. 9210 DOVER DE
— 302-736 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 DOVER DE
— 302-737 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-738 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-739 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 DOVER DE
— 302-740 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-741 3XXX4XXX5XXX6XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 DOVER DE
— 302-743 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-744 0XXX8XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 DOVER DE
— 302-745 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
— 302-746 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J HOLLY OAK DE
— 302-747 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 DOVER DE
— 302-750 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-751 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 FREDERICA DE
— 302-752 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 GEORGETOWN DE
— 302-753 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-754 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 GREENWOOD DE
— 302-757 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX which blocks → NETCARRIER TELECOM, INC. - DE 274E WILMINGTON DE
— 302-758 3XXX9XXX which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-760 1XXX3XXX5XXX9XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 DOVER DE
— 302-761 0XXX3XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-762 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-763 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J HOCKESSIN DE
— 302-764 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-765 7XXX8XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-766 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HOCKESSIN DE
— 302-772 2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-773 8XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-774 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-777 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-778 9XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-779 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J HARTLY DE
— 302-781 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → METROPCS, INC. 5562 NEWARK DE
— 302-784 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.