NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
— 302-754 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
— 302-798 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 HOLLY OAK DE
— 302-804 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J GUMBORO DE
— 302-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX DE
— 302-815 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J GREENWOOD DE
— 302-822 not yet reported which blocks → REDI-CALL COMMUNICATIONS CO. 6810 GEORGETOWN DE
— 302-826 0XXX1XXX2XXX3XXX4XXX7XXX8XXX which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 HOLLY OAK DE
— 302-827 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 LEWES DE
— 302-828 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 MIDDLETOWN DE
— 302-829 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 OCEAN VIEW DE
— 302-830 0XXX2XXX3XXX7XXX8XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-831 5XXX which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-832 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 DELAWARECY DE
— 302-834 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 DELAWARECY DE
— 302-836 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 DELAWARECY DE
— 302-837 0XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-838 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 DELAWARECY DE
— 302-839 2XXX which blocks → PAETEC ITEL, LLC 829J MILFORD DE
— 302-841 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J GEORGETOWN DE
— 302-846 1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → VERIZON DELAWARE, INC. 9210 DELMAR DE
— 302-853 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 GEORGETOWN DE
— 302-854 1XXX8XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 GEORGETOWN DE
— 302-855 3XXX4XXX8XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 GEORGETOWN DE
— 302-856 8XXX which blocks → VERIZON DELAWARE, INC. 9210 GEORGETOWN DE
— 302-857 0XXX9XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 DOVER DE
— 302-858 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 GEORGETOWN DE
— 302-861 2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEWARK DE
— 302-864 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 REHOBOTH DE

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.