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 302
VERIZON DELAWARE, INC. 175
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
— 302-449 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 MIDDLETOWN DE
— 302-451 9XXX which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-452 4XXX which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-453 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-454 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-455 2XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-456 2XXX which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-457 7XXX which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-458 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-467 0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-475 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 HOLLY OAK DE
— 302-476 0XXX1XXX2XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-477 7XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-478 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-479 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-492 2XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 HARTLY DE
— 302-498 1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-529 6XXX which blocks → VERIZON DELAWARE, INC. 9210 HOLLY OAK DE
— 302-537 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 OCEAN VIEW DE
— 302-539 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 OCEAN VIEW DE
— 302-541 1XXX2XXX3XXX6XXX7XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 OCEAN VIEW DE
— 302-552 1XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-571 2XXX3XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-573 0XXX1XXX9XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-574 0XXX2XXX6XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-575 2XXX3XXX4XXX6XXX7XXX9XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-576 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-577 0XXX9XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-594 0XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-622 2XXX5XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-623 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-628 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 SEAFORD DE
— 302-629 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 SEAFORD DE
— 302-631 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-633 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-634 0XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-636 7XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-644 5XXX which blocks → VERIZON DELAWARE, INC. 9210 LEWES DE
— 302-645 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 LEWES DE
— 302-647 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-651 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-652 9XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-653 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 SMYRNA DE
— 302-654 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-655 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-656 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-657 0XXX1XXX6XXX7XXX9XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-658 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-659 7XXX8XXX9XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 SMYRNA DE
— 302-661 5XXX9XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON 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.