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
— 302-284 5XXX6XXX7XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 FELTON DE
— 302-285 2XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J MIDDLETOWN DE
— 302-286 5XXX7XXX8XXX9XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-289 0XXX1XXX2XXX3XXX5XXX6XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 FELTON DE
— 302-292 9XXX which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-294 0XXX1XXX3XXX6XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 NEWARK DE
— 302-295 not yet reported which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 WILMINGTON DE
— 302-296 1XXX6XXX7XXX8XXX which blocks → PAETEC ITEL, LLC 829J REHOBOTH DE
— 302-297 1XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J MILLSBORO DE
— 302-303 not yet reported which blocks → ONVOY, LLC - DE 969E GUMBORO DE
— 302-305 not yet reported which blocks → ONVOY, LLC - DE 969E HARRINGTON DE
— 302-306 not yet reported which blocks → ONVOY, LLC - DE 969E HARTLY DE
— 302-307 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F HOCKESSIN DE
— 302-308 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 HOLLY OAK DE
— 302-309 not yet reported which blocks → ONVOY, LLC - DE 969E LAUREL DE
— 302-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX DE
— 302-312 0XXX which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 MIDDLETOWN DE
— 302-313 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 LEWES DE
— 302-314 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F MIDDLETOWN DE
— 302-315 not yet reported which blocks → ONVOY, LLC - DE 969E MILFORD DE
— 302-316 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F MILLSBORO DE
— 302-317 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 NEW CASTLE DE
— 302-318 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 NEWARK DE
— 302-320 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-321 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J DAGSBORO DE
— 302-322 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEW CASTLE DE
— 302-323 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEW CASTLE DE
— 302-324 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEW CASTLE DE
— 302-325 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEW CASTLE DE
— 302-326 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEW CASTLE DE
— 302-327 0XXX1XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → VERIZON DELAWARE, INC. 9210 NEW CASTLE DE
— 302-328 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 NEW CASTLE DE
— 302-329 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J MILTON DE
— 302-330 2XXX5XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J ANGOLA DE
— 302-331 0XXX which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 CAMDEN DE
— 302-334 1XXX2XXX5XXX6XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J HOLLY OAK DE
— 302-335 2XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 FREDERICA DE
— 302-336 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F DOVER DE
— 302-337 4XXX5XXX6XXX which blocks → VERIZON DELAWARE, INC. 9210 BRIDGEVL DE
— 302-339 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 GEORGETOWN DE
— 302-342 0XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 DOVER DE
— 302-343 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J HARTLY DE
— 302-344 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 GEORGETOWN DE
— 302-345 not yet reported which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILMINGTON DE
— 302-346 not yet reported which blocks → PAETEC ITEL, LLC 829J DOVER DE
— 302-349 1XXX2XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 GREENWOOD DE
— 302-350 not yet reported which blocks → REDI-CALL COMMUNICATIONS CO. 6810 DOVER DE
— 302-351 not yet reported which blocks → PAETEC ITEL, LLC 829J WILMINGTON DE
— 302-352 not yet reported which blocks → PAETEC ITEL, LLC 829J HOCKESSIN DE
— 302-353 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 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.