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 616
MICHIGAN BELL TEL CO 143
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 61
OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 52
ONVOY, LLCV - MI 41
NEW CINGULAR WIRELESS PCS, LLC - IL 37
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
2026-07-24 616-618 0XXX1XXX · 2 holders which blocks → VOIP INNOVATIONS, LLC 597F GRAND RPDS MI
2026-01-13 616-999 0–9 XXXall 10 · 4 holders which blocks → AHOI LLC 883K GRAND RPDS MI
2025-10-10 616-415 0–9 XXXall 10 · 4 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J GRAND RPDS MI
2025-09-24 616-413 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2025-08-28 616-445 0XXX4XXX9XXX which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DRENTHE MI
2025-08-19 616-398 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDHAVEN MI
2025-04-11 616-409 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2025-02-20 616-289 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2025-01-17 616-313 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DRENTHE MI
2024-10-16 616-408 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → LEAP TELECOM, LLC 616J GRAND RPDS MI
2024-10-08 616-386 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2024-03-07 616-407 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 GRAND RPDS MI
2023-12-22 616-381 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2023-10-30 616-376 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2023-08-17 616-370 0–9 XXXall 10 · 4 holders which blocks → WIRETAP TELECOM, LLC. 733J GRAND RPDS MI
2023-07-28 616-360 2XXX3XXX4XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C DUTTON MI
2023-07-14 616-305 0XXX2XXX · 2 holders which blocks → ONVOY, LLCV - MI 543C BYRON CTR MI
2023-07-14 616-919 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 DRENTHE MI
2023-07-06 616-297 0XXX1XXX2XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLCV - MI 543C LOWELL MI
2023-06-26 616-221 0–9 XXXwhole prefix which blocks → ONVOY, LLCV - MI 543C GRAND RPDS MI
2023-06-08 616-280 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRAND RPDS MI
2023-05-24 616-203 0XXX7XXX8XXX9XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J BELDING MI
2022-10-11 616-867 0XXX1XXX3XXX5XXX6XXX7XXX · 4 holders which blocks → COMMIO, LLC 939H ROCKFORD MI
2022-09-27 616-616 0–9 XXXwhole prefix which blocks → ONVOY, LLCV - MI 543C GRAND RPDS MI
2022-03-07 616-424 2XXX which blocks → TON80 COMMUNICATIONS, LLC 516J CONKLIN MI
2022-02-28 616-373 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ZEELAND MI
2022-02-22 616-388 0XXX2XXX3XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAKEODESSA MI
2022-02-18 616-746 7XXX which blocks → TON80 COMMUNICATIONS, LLC 516J TRUFANT MI
2022-01-21 616-372 0XXX2XXX3XXX4XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C COOPERSVL MI
2021-11-18 616-354 4XXX5XXX which blocks → ONVOY, LLCV - MI 543C GREENVILLE MI
2021-11-10 616-362 0XXX1XXX2XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E MOLINE MI
2021-10-29 616-342 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLCV - MI 543C HUDSONVL MI
2021-10-01 616-353 0XXX1XXX5XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E SAND LAKE MI
2021-09-17 616-699 0–9 XXXall 10 · 6 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J GRAND RPDS MI
2021-09-03 616-315 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2021-09-03 616-341 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GRAND RPDS MI
2021-09-01 616-349 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GRAND RPDS MI
2021-08-25 616-320 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E GRAND RPDS MI
2021-07-21 616-324 0XXX1XXX2XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E CASNOVIA MI
2021-07-21 616-348 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H CALEDONIA MI
2021-07-21 616-758 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H GRANDHAVEN MI
2021-07-20 616-314 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLCV - MI 543C ADA MI
2021-06-15 616-282 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLCV - MI 543C LOWELL MI
2021-06-07 616-343 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 GREENVILLE MI
2021-05-25 616-661 0XXX1XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H SPARTA MI
2021-05-21 616-601 0XXX6XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H FREEPORT MI
2021-05-10 616-898 2XXX3XXX6XXX7XXX8XXX · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J ALTO MI
2021-03-24 616-465 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H GRAND RPDS MI
2021-03-19 616-358 0–9 XXXall 10 · 5 holders which blocks → STRATUS NETWORKS 495J CEDAR SPG MI
2021-01-28 616-387 0–9 XXXall 10 · 3 holders which blocks → IP HORIZON LLC 515J GRAND RPDS MI

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.