NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
— 308-483 not yet reported which blocks → DALTON TEL. CO. 1537 LODGEPOLE NE
— 308-485 1XXX2XXX3XXX6XXX7XXX · 4 holders which blocks → QWEST CORPORATION 9631 CAIRO NE
— 308-486 not yet reported which blocks → CONSOLIDATED TELECOM, INC. 1562 EUSTIS NE
— 308-487 not yet reported which blocks → HEMINGFORD COOP. TEL. CO. 1558 HEMINGFORD NE
— 308-489 6XXX7XXX · 2 holders which blocks → UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE 4530 BROADWATER NE
— 308-493 not yet reported which blocks → ARAPAHOE TEL. CO. 1516 HOLBROOK NE
— 308-496 not yet reported which blocks → NEBRASKA CENTRAL TEL. CO. 1574 NORTH LOUP NE
— 308-497 not yet reported which blocks → GREAT PLAINS COMMUNICATIONS, INC. 1577 SPALDING NE
— 308-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NE
— 308-520 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 NO PLATTE NE
— 308-524 5XXX6XXX9XXX · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 SIDNEY NE
— 308-525 not yet reported which blocks → GOLDEN WEST TEL COOP INC DBA GOLDEN WEST TELECOMM 1659 SOOELRICHS NE
— 308-527 not yet reported which blocks → NEBRASKA CENTRAL TEL. CO. 1574 SARGENT NE
— 308-529 4XXX5XXX6XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 GOTHENBURG NE
— 308-530 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 NO PLATTE NE
— 308-531 not yet reported which blocks → NE
— 308-532 not yet reported which blocks → QWEST CORPORATION 9631 NO PLATTE NE
— 308-533 not yet reported which blocks → CONSOLIDATED TEL. CO. 1532 THEDFORD NE
— 308-534 not yet reported which blocks → QWEST CORPORATION 9631 NO PLATTE NE
— 308-535 1XXX which blocks → QWEST CORPORATION 9631 NO PLATTE NE
— 308-536 0XXX1XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → QWEST CORPORATION 9631 FULLERTON NE
— 308-537 0XXX1XXX5XXX6XXX9XXX · 4 holders which blocks → QWEST CORPORATION 9631 GOTHENBURG NE
— 308-538 not yet reported which blocks → CONSOLIDATED TEL. CO. 1532 DUNNING NE
— 308-539 none assigned yet which blocks → UNITED STATES CELLULAR - NE 6263 NO PLATTE NE
— 308-544 not yet reported which blocks → CONSOLIDATED TEL. CO. 1532 HYANNIS NE
— 308-546 3XXX4XXX8XXX · 3 holders which blocks → CONSOLIDATED TEL. CO. 1532 MULLEN NE
— 308-547 not yet reported which blocks → CONSOLIDATED TEL. CO. 1532 BREWSTER NE
— 308-548 not yet reported which blocks → NORTHEAST NEBRASKA TEL. CO. 1576 CLARKS NE
— 308-550 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 FULLERTON NE
— 308-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST NE
— 308-558 not yet reported which blocks → NE
— 308-563 not yet reported which blocks → CITIZENS TELECOM OF NE LLC DBA FRONTIER COM OF NE 1128 HEARTWELL NE
— 308-567 not yet reported which blocks → GREAT PLAINS COMMUNICATIONS, INC. 1577 HUNTLERGAN NE
— 308-569 not yet reported which blocks → ARAPAHOE TEL. CO. 1516 FARNAM NE
— 308-577 not yet reported which blocks → CONSOLIDATED TEL. CO. 1532 HYANNIS NE
— 308-582 not yet reported which blocks → CONSOLIDATED TELECOM, INC. 1562 MAXWELL NE
— 308-583 1XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → QWEST CORPORATION 9631 WOOD RIVER NE
— 308-584 not yet reported which blocks → CONSOLIDATED TELECOM, INC. 1562 BRADY NE
— 308-586 not yet reported which blocks → UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE 4530 BAYARD NE
— 308-587 not yet reported which blocks → GREAT PLAINS COMMUNICATIONS, INC. 1577 TRYON NE
— 308-588 not yet reported which blocks → CONSOLIDATED TEL. CO. 1532 HYANNIS NE
— 308-589 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → UNITED STATES CELLULAR - NE 6263 GRAND IS NE
— 308-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NE
— 308-623 not yet reported which blocks → UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE 4530 MITCHELL NE
— 308-628 not yet reported which blocks → NEBRASKA CENTRAL TEL. CO. 1574 COMSTOCK NE
— 308-630 not yet reported which blocks → UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE 4530 SCOTSBLUFF NE
— 308-631 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 SCOTSBLUFF NE
— 308-632 not yet reported which blocks → UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE 4530 SCOTSBLUFF NE
— 308-635 not yet reported which blocks → UNITED TEL CO OF THE WEST DBA CENTURYLINK - NE 4530 SCOTSBLUFF NE
— 308-636 none assigned yet which blocks → GREAT PLAINS COMMUNICATIONS, INC. 1577 STAPLETON NE

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.