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
— 302-929 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 LAUREL DE
— 302-930 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 MILFORD DE
— 302-933 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → VERIZON DELAWARE, INC. 9210 MILLSBORO DE
— 302-934 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 MILLSBORO DE
— 302-943 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX which blocks → PAETEC ITEL, LLC 829J CAMDEN DE
— 302-945 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 ANGOLA DE
— 302-947 3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 ANGOLA DE
— 302-950 not yet reported which blocks → DE
— 302-956 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J BRIDGEVL DE
— 302-958 not yet reported which blocks → DE
— 302-959 not yet reported which blocks → DE
— 302-966 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 8 holders which blocks → PAETEC ITEL, LLC 829J ANGOLA DE
— 302-970 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 XXXXXXXXXX DE
— 302-976 not yet reported which blocks → DE
— 302-981 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 NEWARK DE
— 302-983 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 NEWARK DE
— 302-984 7XXX8XXX9XXX · 3 holders which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-985 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WILMINGTON DE
— 302-988 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 SELBYVILLE DE
— 302-990 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 SEAFORD DE
— 302-992 8XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-993 6XXX which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-994 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-995 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-996 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-997 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 XXXXXXXXXX DE
— 302-998 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 302-999 not yet reported which blocks → VERIZON DELAWARE, INC. 9210 WILMINGTON DE
— 303-200 none assigned yet which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CO 7378 DENVER CO
— 303-201 not yet reported which blocks → SPOK, INC. 6630 DENVER CO
— 303-202 not yet reported which blocks → QWEST CORPORATION 9636 DENVER CO
— 303-203 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 DENVER CO
— 303-204 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
— 303-205 not yet reported which blocks → QWEST CORPORATION 9636 DENVER CO
— 303-206 not yet reported which blocks → SPOK, INC. 6630 DENVER CO
— 303-207 not yet reported which blocks → SPOK, INC. 6630 DENVER CO
— 303-208 not yet reported which blocks → SPOK, INC. 6630 DENVER CO
— 303-209 not yet reported which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DENVER CO
— 303-210 none assigned yet which blocks → T-MOBILE USA, INC. 6529 DENVER CO
— 303-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CO
— 303-212 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 DENVER CO
— 303-213 not yet reported which blocks → SPOK, INC. 6630 DENVER CO
— 303-214 3XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DENVER CO
— 303-215 not yet reported which blocks → QWEST CORPORATION 9636 DENVER CO
— 303-216 not yet reported which blocks → QWEST CORPORATION 9636 DENVER CO
— 303-217 0XXX1XXX3XXX5XXX6XXX8XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DENVER CO
— 303-218 0XXX8XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DENVER CO
— 303-219 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DENVER CO
— 303-220 not yet reported which blocks → QWEST CORPORATION 9636 DENVER CO
— 303-221 not yet reported which blocks → QWEST CORPORATION 9636 DENVER CO

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.