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
— 302-218 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILMINGTON DE
— 302-219 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F GREENWOOD DE
— 302-220 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-221 not yet reported which blocks → PAETEC ITEL, LLC 829J NEW CASTLE DE
— 302-223 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 SMYRNA DE
— 302-224 not yet reported which blocks → PAETEC ITEL, LLC 829J NEWARK DE
— 302-225 not yet reported which blocks → PAETEC ITEL, LLC 829J WILMINGTON DE
— 302-226 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 REHOBOTH DE
— 302-227 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 REHOBOTH DE
— 302-228 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
— 302-229 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
— 302-230 1XXX2XXX6XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WILMINGTON DE
— 302-231 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 ANGOLA DE
— 302-232 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → BLOCK LINE SYSTEMS, LLC - DE 783E BRIDGEVL DE
— 302-233 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 CAMDEN DE
— 302-234 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 HOCKESSIN DE
— 302-235 3XXX8XXX9XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 HOCKESSIN DE
— 302-236 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 GEORGETOWN DE
— 302-238 1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → VERIZON DELAWARE, INC. 9210 GUMBORO DE
— 302-239 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 HOCKESSIN DE
— 302-241 0XXX2XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOVER DE
— 302-242 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 CAMDEN DE
— 302-243 not yet reported which blocks → SPOK, INC. 6630 WILMINGTON DE
— 302-246 1XXX3XXX5XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J HOLLY OAK DE
— 302-247 not yet reported which blocks → SPOK, INC. 6630 WILMINGTON DE
— 302-248 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J DELMAR DE
— 302-249 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
— 302-251 1XXX2XXX6XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J OCEAN VIEW DE
— 302-252 1XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 WILMINGTON DE
— 302-253 7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J GEORGETOWN DE
— 302-254 not yet reported which blocks → PAETEC ITEL, LLC 829J WILMINGTON DE
— 302-255 5XXX6XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-258 3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GEORGETOWN DE
— 302-260 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 REHOBOTH DE
— 302-261 2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DELAWARECY DE
— 302-262 1XXX5XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J SEAFORD DE
— 302-263 not yet reported which blocks → SCOTT SABO DBA ALLPAGE 4276 DOVER DE
— 302-266 1XXX2XXX4XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 302-269 2XXX4XXX5XXX6XXX8XXX9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DOVER DE
— 302-270 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 CAMDEN DE
— 302-275 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILMINGTON DE
— 302-279 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 MIDDLETOWN DE
— 302-280 1XXX5XXX6XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J LAUREL DE
— 302-282 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-283 9XXX which blocks → VERIZON DELAWARE, INC. 9210 NEWARK DE
— 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

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.