NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

341 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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
— 308-882 none assigned yet which blocks → GREAT PLAINS COMMUNICATIONS, INC. 1577 IMPERIAL NE
— 308-884 not yet reported which blocks → DALTON TEL. CO. 1537 GURLEY NE
— 308-889 2XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → QWEST CORPORATION 9631 BIGSPRINGS NE
— 308-893 6XXX8XXX · 2 holders which blocks → CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE 1128 RIVERDALE NE
— 308-894 not yet reported which blocks → CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE 1128 PALMER NE
— 308-895 not yet reported which blocks → HARTMAN TEL. EXCH., INC. 1557 DANBURY NE
— 308-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NE
— 308-920 4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 ALMA NE
— 308-927 not yet reported which blocks → CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE 1128 EDISON NE
— 308-928 not yet reported which blocks → CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE 1128 ALMA NE
— 308-930 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → UNITED STATES CELLULAR - NE 6263 GRAND IS NE
— 308-935 not yet reported which blocks → NEBRASKA CENTRAL TEL. CO. 1574 ANSLEY NE
— 308-938 not yet reported which blocks → CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE 1128 HILDRETH NE
— 308-940 4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 CENTRAL CY NE
— 308-942 not yet reported which blocks → NEBRASKA CENTRAL TEL. CO. 1574 TAYLOR NE
— 308-946 7XXX8XXX · 2 holders which blocks → QWEST CORPORATION 9631 CENTRAL CY NE
— 308-947 not yet reported which blocks → N.E. COLORADO CELLULAR, INC. 6874 CENTRAL CY NE
— 308-950 not yet reported which blocks → NE
— 308-958 not yet reported which blocks → NE
— 308-959 not yet reported which blocks → NE
— 308-962 not yet reported which blocks → ARAPAHOE TEL. CO. 1516 ARAPAHOE NE
— 308-963 not yet reported which blocks → CONSOLIDATED TELCO, INC. 1530 WELLFLEET NE
— 308-968 not yet reported which blocks → GREAT PLAINS COMMUNICATIONS, INC. 1577 COTESFIELD NE
— 308-970 not yet reported which blocks → NE
— 308-976 not yet reported which blocks → NE
— 308-986 not yet reported which blocks → GREAT PLAINS COMMUNICATIONS, INC. 1577 CHAPMAN NE
— 308-987 not yet reported which blocks → ARAPAHOE TEL. CO. 1516 OVERTON NE
— 308-988 not yet reported which blocks → NE
— 308-991 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 HOLDREGE NE
— 308-995 0XXX1XXX7XXX · 2 holders which blocks → QWEST CORPORATION 9631 HOLDREGE NE
— 308-996 not yet reported which blocks → NEBRASKA CENTRAL TEL. CO. 1574 BOELUS NE
— 308-999 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → UNITED STATES CELLULAR - NE 6263 HOLDREGE NE
— 309-208 none assigned yet which blocks → T-MOBILE USA, INC. 6529 PEORIA IL
— 309-210 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PEORIA IL
— 309-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 309-212 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BLOOMINGTN IL
— 309-213 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PEORIA IL
— 309-214 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PEORIA IL
— 309-215 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PEORIA IL
— 309-216 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PEORIA IL
— 309-218 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PEORIA IL
— 309-219 0–9 XXXall 10 · 3 holders which blocks → UNITED STATES CELLULAR - IL 6265 PEORIA IL
— 309-221 none assigned yet which blocks → UNITED STATES CELLULAR - IL 6265 GALESBURG IL
— 309-222 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → AT&T - LOCAL 7421 PEORIA IL
— 309-224 none assigned yet which blocks → UNITED STATES CELLULAR - IL 6265 PEORIA IL
— 309-226 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 CANTON IL
— 309-227 not yet reported which blocks → CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 1183 CORDOVA IL
— 309-229 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX which blocks → AT&T - LOCAL 7421 PEORIA IL
— 309-231 none assigned yet which blocks → UNITED STATES CELLULAR - IL 6265 PEORIA IL
— 309-232 7XXX8XXX · 2 holders which blocks → UNITED STATES CELLULAR - IL 6265 PEORIA IL

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.