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
— 302-857 0XXX9XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 DOVER DE
— 302-858 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 GEORGETOWN DE
— 302-875 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 LAUREL DE
— 302-877 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → VERIZON DELAWARE, INC. 9210 LAUREL DE
— 302-884 0XXX1XXX2XXX7XXX8XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-885 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-886 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-887 0XXX1XXX2XXX6XXX9XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-888 8XXX9XXX · 2 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-892 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-894 2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-933 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON DELAWARE, INC. 9210 MILLSBORO DE
— 302-934 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 MILLSBORO DE
— 302-945 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 ANGOLA DE
— 302-947 3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 ANGOLA DE
— 302-970 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 XXXXXXXXXX DE
— 302-984 7XXX8XXX9XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-992 8XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-993 6XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-994 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-995 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-996 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-997 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 XXXXXXXXXX DE
— 302-998 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-999 not yet reported 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.