NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 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, 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
2022-01-11 308-896 8XXX which blocks → TWILIO INTERNATIONAL, INC. 506J CAIRO NE
2021-09-16 308-460 2XXX4XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PALMER NE
2021-08-12 308-406 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VENANGO NE
2021-08-12 308-417 0XXX1XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STAPLETON NE
2021-08-12 308-437 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANOLA NE
2021-08-12 308-451 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CALLAWAY NE
2021-08-12 308-462 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PALISADE NE
2021-08-12 308-463 7XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TRENTON NE
2021-08-12 308-541 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OCONTO NE
2021-08-12 308-552 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUNTLERGAN NE
2021-08-12 308-602 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CAMBRIDGE NE
2021-08-12 308-721 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARNOLD NE
2021-07-15 308-461 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NO LONG IS NE
2021-06-29 308-456 0XXX1XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 MITCHELL NE
2021-06-16 308-356 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARTLETT NE
2021-06-16 308-410 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRADY NE
2021-06-16 308-412 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EUSTIS NE
2021-06-16 308-413 0XXX7XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 THEDFORD NE
2021-06-16 308-416 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CURTIS NE
2021-06-16 308-431 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FARNAM NE
2021-06-16 308-435 1XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MERNA NE
2021-06-16 308-441 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NO BURWELL NE
2021-06-16 308-442 1XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAYWOOD NE
2021-06-16 308-454 5XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAXWELL NE
2021-06-16 308-481 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOLBROOK NE
2021-06-16 308-491 0XXX1XXX4XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANT NE
2021-06-16 308-495 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HERSHEY NE
2021-06-16 308-509 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADRID NE
2021-06-16 308-554 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GIBBON NE
2021-06-16 308-599 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITCHFIELD NE
2021-05-07 308-407 0XXX1XXX7XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NE 995E RIVERDALE NE
2021-05-07 308-409 0XXX9XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NE 995E RAVENNA NE
2021-05-07 308-438 2XXX3XXX8XXX which blocks → ONVOY, LLC - NE 549E AMHERST NE
2021-05-06 308-405 1XXX2XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COZAD NE
2021-05-04 308-813 2XXX8XXX which blocks → ONVOY, LLC - NE 549E HEARTWELL NE
2021-05-04 308-831 2XXX3XXX which blocks → ONVOY, LLC - NE 549E NAPONEE NE
2021-05-04 308-843 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - NE 549E PLEASANTON NE
2021-04-13 308-910 0XXX1XXX5XXX · 2 holders which blocks → ALLO COMMUNICATIONS LLC 907K GRAND IS NE
2021-03-15 308-403 0–9 XXXall 10 · 2 holders which blocks → TELNYX LLC 073H GRAND IS NE
2021-03-12 308-354 0XXX1XXX3XXX · 2 holders which blocks → ONVOY, LLC - NE 549E LEWELLEN NE
2021-03-12 308-401 0XXX1XXX3XXX4XXX8XXX · 2 holders which blocks → ONVOY, LLC - NE 549E LYMAN NE
2021-03-04 308-477 0XXX9XXX · 2 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K WILCOX NE
2021-02-28 308-317 1XXX3XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BROADWATER NE
2021-02-28 308-376 1XXX2XXX6XXX7XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OSHKOSH NE
2021-02-16 308-877 0XXX which blocks → CHARTER IP ENABLED SERVICES, LLC 792K LOOMIS NE
2021-02-16 308-985 0XXX1XXX2XXX · 2 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K OVERTON NE
2021-02-03 308-314 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NE 995E GRAND IS NE
2021-02-03 308-378 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H LEXINGTON NE
2021-01-08 308-371 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NE 549E KEARNEY NE
2020-12-24 308-310 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NE 549E SCOTSBLUFF NE

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.