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 651
QWEST CORPORATION 186
AERIAL COMMUNICATIONS, INC. 66
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 47
ONVOY, LLC - MN 32
LEVEL 3 COMMUNICATIONS, LLC - MN 19
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
2026-07-28 651-580 7XXX which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J TWINCITIES MN
2026-03-17 651-908 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2025-11-14 651-870 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2025-04-22 651-420 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2025-03-12 651-441 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 LAKE CITY MN
2024-10-24 651-418 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2024-02-06 651-627 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2024-01-19 651-416 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 HASTINGS MN
2023-12-27 651-585 0XXX which blocks → FIVE9, INC. 598J STILLWATER MN
2023-09-28 651-509 0–9 XXXall 10 · 4 holders which blocks → WIDE VOICE, LLC - MN 954H TWINCITIES MN
2023-08-18 651-421 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2023-08-18 651-655 0–9 XXXwhole prefix which blocks → ONVOY SPECTRUM, LLC 624H TWINCITIES MN
2023-06-21 651-397 0XXX7XXX9XXX · 3 holders which blocks → AT&T - LOCAL 7421 NORTH BRCH MN
2023-04-18 651-506 4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J STILLWATER MN
2022-12-30 651-396 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2022-10-04 651-677 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 HASTINGS MN
2022-09-15 651-551 0XXX1XXX2XXX3XXX4XXX5XXX9XXX · 3 holders which blocks → COMMIO, LLC 939H STILLWATER MN
2022-09-02 651-498 0XXX1XXX3XXX8XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J STILLWATER MN
2022-07-01 651-392 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2022-06-29 651-391 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TWINCITIES MN
2022-02-17 651-588 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAKE CITY MN
2022-02-16 651-742 0XXX1XXX2XXX6XXX8XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RED WING MN
2022-02-01 651-837 4XXX6XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SCANDIMRIN MN
2021-06-21 651-386 0XXX1XXX2XXX3XXX6XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MN 980E WABASHA MN
2021-06-17 651-422 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H NORTH BRCH MN
2021-06-17 651-477 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H STCROIXBCH MN
2021-05-26 651-384 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 LAKE CITY MN
2021-02-02 651-650 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - MN 184D LINDSTROM MN
2020-12-16 651-382 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MN 184D LAKE CITY MN
2020-12-14 651-381 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MN 184D HASTINGS MN
2020-10-13 651-461 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2020-10-08 651-758 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H TWINCITIES MN
2020-07-23 651-899 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H SCANDIMRIN MN
2020-06-17 651-877 1XXX2XXX4XXX6XXX7XXX8XXX · 2 holders which blocks → FRACTEL, LLC 965H TAYLORSFLS MN
2020-06-17 651-946 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H HASTINGS MN
2020-06-17 651-977 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → FRACTEL, LLC 965H RED WING MN
2020-05-15 651-377 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MN 5256 TWINCITIES MN
2020-05-15 651-515 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 TWINCITIES MN
2020-03-25 651-378 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2020-02-18 651-661 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2020-02-14 651-374 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J TWINCITIES MN
2019-12-19 651-615 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2019-10-15 651-390 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → VONAGE AMERICA LLC 197D STILLWATER MN
2019-10-02 651-372 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MN 184D NORTH BRCH MN
2019-08-20 651-349 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - MN 184D WABASHA MN
2019-06-12 651-867 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H TWINCITIES MN
2019-05-24 651-467 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - MN 184D LINDSTROM MN
2019-02-04 651-370 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J TWINCITIES MN
2018-11-08 651-369 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MN 184D TWINCITIES MN
2018-10-29 651-364 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN

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.