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 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
— 651-395 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
— 651-398 0XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
— 651-402 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
— 651-405 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-406 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-407 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-408 2XXX3XXX4XXX5XXX · 2 holders which blocks → CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 1123 TWINCITIES MN
— 651-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MN
— 651-415 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-423 not yet reported which blocks → FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 1367 TWINCITIES MN
— 651-426 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-428 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
— 651-429 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-430 not yet reported which blocks → QWEST CORPORATION 9631 STILLWATER MN
— 651-433 0XXX6XXX7XXX · 3 holders which blocks → CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 1123 SCANDIMRIN MN
— 651-436 0XXX which blocks → QWEST CORPORATION 9631 STCROIXBCH MN
— 651-437 not yet reported which blocks → CENTURYLINK OF MINNESOTA, INC. 1456 HASTINGS MN
— 651-438 not yet reported which blocks → CENTURYLINK OF MINNESOTA, INC. 1456 HASTINGS MN
— 651-439 not yet reported which blocks → QWEST CORPORATION 9631 STILLWATER MN
— 651-450 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-451 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-452 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-453 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-454 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-455 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-456 8XXX which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-457 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-458 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-459 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-460 0XXX9XXX · 2 holders which blocks → FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 1367 TWINCITIES MN
— 651-462 not yet reported which blocks → CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 1123 TWINCITIES MN
— 651-463 not yet reported which blocks → FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 1367 TWINCITIES MN
— 651-464 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-465 8XXX which blocks → CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 1123 TAYLORSFLS MN
— 651-466 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-468 1XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MN 7783 TWINCITIES MN
— 651-470 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
— 651-478 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J TWINCITIES MN
— 651-480 not yet reported which blocks → CENTURYLINK OF MINNESOTA, INC. 1456 HASTINGS MN
— 651-481 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-482 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-483 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-484 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-485 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
— 651-486 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-490 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-493 not yet reported which blocks → COMCAST IP PHONE, LLC 318J TWINCITIES MN
— 651-494 2XXX4XXX7XXX8XXX which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-495 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-497 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → QWEST CORPORATION 9631 TWINCITIES MN

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.