NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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, all time — NPA 308
NEW CINGULAR WIRELESS PCS, LLC - IL 57
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 54
QWEST CORPORATION 42
GREAT PLAINS COMMUNICATIONS, INC. 30
CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE 28
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
2026-06-17 308-508 7XXX8XXX9XXX which blocks → HD CARRIER LLC 321J GRAND IS NE
2026-06-03 308-600 0XXX which blocks → AHOI LLC 883K GRAND IS NE
2026-04-22 308-399 7XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 HAYES CTR NE
2025-12-22 308-444 0XXX4XXX which blocks → ONVOY, LLC - NE 549E AXTELL NE
2025-11-05 308-374 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - NE 549E NO PLATTE NE
2025-09-03 308-855 5XXX which blocks → ALLO COMMUNICATIONS LLC 907K SCOTSBLUFF NE
2025-07-11 308-329 0XXX which blocks → WAVENATION, LLC 700J GRAND IS NE
2025-05-23 308-393 1XXX which blocks → CHARTER IP ENABLED SERVICES, LLC 792K ASHTON NE
2025-03-26 308-810 0XXX7XXX9XXX · 3 holders which blocks → METROPCS, INC. 5562 BROKEN BOW NE
2025-03-19 308-343 1XXX which blocks → AIRUS, INC. - NE 478H GRAND IS NE
2025-03-19 308-815 1XXX9XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 ST PAUL NE
2025-03-06 308-333 0XXX1XXX3XXX5XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GOTHENBURG NE
2024-10-02 308-332 7XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ARCHER NE
2024-09-11 308-331 0XXX1XXX3XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 FULLERTON NE
2024-05-07 308-322 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEMOYNE NE
2024-04-17 308-315 1XXX which blocks → IP HORIZON LLC 515J GRAND IS NE
2024-01-05 308-296 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NE 549E KEARNEY NE
2023-08-22 308-292 0XXX1XXX2XXX3XXX4XXX which blocks → COMMIO, LLC 939H BRIDGEPORT NE
2023-08-22 308-294 0XXX1XXX2XXX3XXX4XXX which blocks → COMMIO, LLC 939H CHAPPELL NE
2023-08-22 308-295 0XXX1XXX2XXX3XXX4XXX5XXX · 2 holders which blocks → COMMIO, LLC 939H FARWELL NE
2023-08-04 308-291 3XXX which blocks → ONVOY, LLC - NE 549E GERING NE
2023-07-12 308-290 0XXX which blocks → BOOST SUBSCRIBERCO L.L.C. 490J DANNEBROG NE
2023-06-16 308-288 1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLDREGE NE
2023-05-25 308-283 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J GRAND IS NE
2023-05-19 308-266 1XXX2XXX5XXX7XXX · 4 holders which blocks → ONVOY, LLC - NE 549E ATLANTA NE
2023-05-19 308-272 1XXX which blocks → ONVOY, LLC - NE 549E GREELEY NE
2023-05-05 308-261 0XXX1XXX2XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 IMPERIAL NE
2023-04-04 308-257 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J NO PLATTE NE
2023-02-21 308-408 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H LEXINGTON NE
2023-02-13 308-256 0XXX1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → NUSO, LLC 732J SCOTSBLUFF NE
2023-02-03 308-208 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NO PLATTE NE
2023-02-01 308-206 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 KEARNEY NE
2023-01-03 308-200 0XXX1XXX2XXX3XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 MCCOOK NE
2023-01-03 308-205 0XXX1XXX2XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 ELWOOD NE
2022-11-16 308-204 0XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NO JULESBG NE
2022-09-23 308-209 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARTHUR NE
2022-09-23 308-213 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DANBURY NE
2022-09-23 308-242 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENKELMAN NE
2022-09-23 308-243 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELSIE NE
2022-09-23 308-259 1XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SILVER CRK NE
2022-09-23 308-328 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAIGLER NE
2022-09-23 308-363 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WAUNETA NE
2022-09-23 308-419 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SODTOWN NE
2022-08-19 308-298 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BUSHNELL NE
2022-08-19 308-347 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DALTON NE
2022-08-08 308-466 1XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 FRANKLIN NE
2022-05-27 308-264 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHPEETZ NE
2022-04-04 308-867 5XXX8XXX · 2 holders which blocks → COMMIO, LLC 939H GRAND IS NE
2022-03-18 308-465 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 OGALLALA NE
2022-02-18 308-253 0XXX1XXX2XXX3XXX7XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K BIGSPRINGS NE

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.