NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

1 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, last 30 days — NPA 302
NEW CINGULAR WIRELESS PCS, LLC - DC 1
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
— 302-722 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
— 302-786 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J HARRINGTON DE
— 302-791 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 HOLLY OAK DE
— 302-792 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 HOLLY OAK DE
— 302-793 9XXX which blocks → VERIZON DELAWARE, INC. 9210 HOLLY OAK DE
— 302-797 0XXX1XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → VERIZON DELAWARE, INC. 9210 HOLLY OAK DE

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.