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
— 302-294 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
— 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

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.