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 402
QWEST CORPORATION 160
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
— 402-375 not yet reported which blocks → QWEST CORPORATION 9631 WAYNE NE
— 402-376 9XXX which blocks → QWEST CORPORATION 9631 VALENTINE NE
— 402-384 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-385 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → QWEST CORPORATION 9631 PENDER NE
— 402-387 3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → QWEST CORPORATION 9631 AINSWORTH NE
— 402-390 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-391 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-392 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-393 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-397 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-398 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-399 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-422 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-431 2XXX3XXX · 2 holders which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-444 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-445 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-449 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-451 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-452 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-453 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-455 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-457 9XXX which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-491 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-492 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-493 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-494 not yet reported which blocks → QWEST CORPORATION 9631 SOSIOUX CY NE
— 402-496 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-498 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-522 6XXX which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-530 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-536 0XXX9XXX which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-537 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-541 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-546 9XXX which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-547 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-548 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-550 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-551 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-552 8XXX which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-553 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-554 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-556 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-557 0XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-558 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-559 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-561 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-571 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-572 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-573 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
— 402-574 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE

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.