NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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
— 302-363 8XXX which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOVER DE
— 302-364 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 DAGSBORO DE
— 302-365 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J DELAWARECY DE
— 302-366 2XXX3XXX4XXX9XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-367 0XXX1XXX2XXX3XXX7XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-368 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-369 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-373 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN DE
— 302-375 2XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J HOLLY OAK DE
— 302-376 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 MIDDLETOWN DE
— 302-377 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILMINGTON DE
— 302-378 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 MIDDLETOWN DE
— 302-379 7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 WILMINGTON DE
— 302-381 6XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 GEORGETOWN DE
— 302-382 7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 CAMDEN DE
— 302-383 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 WILMINGTON DE
— 302-384 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILMINGTON DE
— 302-385 2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HOLLY OAK DE
— 302-387 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 CAMDEN DE
— 302-388 0XXX3XXX4XXX6XXX7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 WILMINGTON DE
— 302-389 5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J SMYRNA DE
— 302-391 0XXX1XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-392 not yet reported which blocks → PAETEC ITEL, LLC 829J DELAWARECY DE
— 302-393 0XXX2XXX5XXX8XXX · 4 holders which blocks → METROPCS, INC. 5562 MILFORD DE
— 302-395 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEW CASTLE DE
— 302-397 1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WILMINGTON DE
— 302-398 2XXX which blocks → VERIZON DELAWARE, INC. 9210 HARRINGTON DE
— 302-399 2XXX which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOVER DE
— 302-402 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F OCEAN VIEW DE
— 302-403 not yet reported which blocks → ONVOY, LLC - DE 969E REHOBOTH DE
— 302-404 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 SEAFORD DE
— 302-405 not yet reported which blocks → ONVOY, LLC - DE 969E SELBYVILLE DE
— 302-406 not yet reported which blocks → ONVOY, LLC - DE 969E SMYRNA DE
— 302-407 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 WILMINGTON DE
— 302-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX DE
— 302-417 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - DE 969E HOLLY OAK DE
— 302-418 0–9 XXXwhole prefix which blocks → CORETEL DELAWARE, INC. - DE 1991 HOLLY OAK DE
— 302-419 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEW CASTLE DE
— 302-420 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILMINGTON DE
— 302-421 0XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-422 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 MILFORD DE
— 302-423 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER DE
— 302-424 9XXX which blocks → VERIZON DELAWARE, INC. 9210 MILFORD DE
— 302-425 1XXX8XXX9XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-426 3XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-427 5XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-428 9XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-429 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-430 1XXX2XXX3XXX4XXX6XXX8XXX9XXX which blocks → VERIZON DELAWARE, INC. 9210 MILFORD DE
— 302-432 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.