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
— 651-289 not yet reported which blocks → COMCAST IP PHONE, LLC 318J TWINCITIES MN
— 651-290 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-291 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-292 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-293 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-294 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 4139 TWINCITIES MN
— 651-295 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
— 651-296 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-297 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-298 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-301 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 RED WING MN
— 651-303 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 STILLWATER MN
— 651-304 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MN 5256 HASTINGS MN
— 651-306 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-307 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
— 651-310 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MN
— 651-312 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-317 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MN 8405 NORTH BRCH MN
— 651-320 not yet reported which blocks → MN
— 651-321 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MN 8405 STCROIXBCH MN
— 651-322 0XXX which blocks → FRONTIER COMMUNICATIONS OF MINNESOTA, INC. 1367 TWINCITIES MN
— 651-323 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MN 8405 STILLWATER MN
— 651-325 1XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-326 not yet reported which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-329 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
— 651-334 2XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
— 651-335 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
— 651-336 0XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
— 651-337 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J STCROIXBCH MN
— 651-338 0XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
— 651-339 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 TWINCITIES MN
— 651-342 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J STILLWATER MN
— 651-344 1XXX7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MN 5256 TWINCITIES MN
— 651-345 not yet reported which blocks → CENTURYLINK OF MINNESOTA, INC. 1456 LAKE CITY MN
— 651-351 not yet reported which blocks → QWEST CORPORATION 9631 STILLWATER MN
— 651-353 not yet reported which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
— 651-355 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TWINCITIES MN
— 651-357 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 4139 TWINCITIES MN
— 651-361 0XXX7XXX8XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - MN 8405 TWINCITIES MN
— 651-365 2XXX which blocks → QWEST CORPORATION 9631 TWINCITIES MN
— 651-367 4XXX9XXX which blocks → AT&T - LOCAL 7421 TWINCITIES MN
— 651-373 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
— 651-379 1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 4139 TWINCITIES MN
— 651-380 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 RED WING MN
— 651-385 not yet reported which blocks → QWEST CORPORATION 9631 RED WING MN
— 651-387 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
— 651-388 not yet reported which blocks → QWEST CORPORATION 9631 RED WING MN
— 651-389 none assigned yet which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TWINCITIES MN
— 651-393 5XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - MN 5256 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.