NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
— 302-354 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 WILMINGTON DE
— 302-355 not yet reported which blocks → PAETEC ITEL, LLC 829J NEWARK DE
— 302-356 not yet reported which blocks → PAETEC ITEL, LLC 829J NEW CASTLE DE
— 302-359 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 DOVER DE
— 302-360 1XXX5XXX6XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J LEWES DE
— 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

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.