NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 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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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 541-762 not yet reported which blocks → ONVOY, LLC - OR 750E EUGENE OR
— 541-763 5XXX which blocks → CENTURYTEL OF OREGON, INC. DBA CENTURYLINK 2360 FOSSIL OR
— 541-764 1XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → CENTURYTEL OF OREGON, INC. DBA CENTURYLINK 2395 DEPOE BAY OR
— 541-765 1XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → CENTURYTEL OF OREGON, INC. DBA CENTURYLINK 2395 DEPOE BAY OR
— 541-766 not yet reported which blocks → QWEST CORPORATION 9638 CORVALLIS OR
— 541-767 4XXX6XXX7XXX8XXX · 4 holders which blocks → QWEST CORPORATION 9638 COTTAGEGRV OR
— 541-768 not yet reported which blocks → QWEST CORPORATION 9638 CORVALLIS OR
— 541-770 not yet reported which blocks → QWEST CORPORATION 9638 MEDFORD OR
— 541-771 none assigned yet which blocks → UNITED STATES CELLULAR - OR 6349 BEND OR
— 541-772 not yet reported which blocks → QWEST CORPORATION 9638 MEDFORD OR
— 541-773 not yet reported which blocks → QWEST CORPORATION 9638 MEDFORD OR
— 541-774 not yet reported which blocks → QWEST CORPORATION 9638 MEDFORD OR
— 541-776 not yet reported which blocks → QWEST CORPORATION 9638 MEDFORD OR
— 541-777 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → T-MOBILE USA, INC. 6529 MADRAS OR
— 541-778 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MEDFORD OR
— 541-779 not yet reported which blocks → QWEST CORPORATION 9638 MEDFORD OR
— 541-782 7XXX8XXX · 2 holders which blocks → QWEST CORPORATION 9638 OAKRIDGE OR
— 541-783 8XXX which blocks → CENTURYTEL OF OREGON, INC. DBA CENTURYLINK 2360 CHILOQUIN OR
— 541-784 5XXX6XXX7XXX8XXX which blocks → QWEST CORPORATION 9638 ROSEBURG OR
— 541-785 not yet reported which blocks → PINE TEL. SYSTEM 2392 OXBOW OR
— 541-786 6XXX7XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 LA GRANDE OR
— 541-787 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → UNITED STATES CELLULAR - OR 6349 GRANTSPASS OR
— 541-788 6XXX which blocks → T-MOBILE USA, INC. 6529 BEND OR
— 541-791 6XXX7XXX · 2 holders which blocks → QWEST CORPORATION 9638 ALBANY OR
— 541-793 4XXX5XXX · 2 holders which blocks → UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 4520 DIAMOND LK OR
— 541-798 not yet reported which blocks → CENTURYTEL OF OREGON, INC. DBA CENTURYLINK 2360 MERRILL OR
— 541-806 7XXX which blocks → UNITED STATES CELLULAR - OR 6349 HOOD RIVER OR
— 541-810 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → UNITED STATES CELLULAR - OR 6349 KLAMATHFLS OR
— 541-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX OR
— 541-812 not yet reported which blocks → QWEST CORPORATION 9638 ALBANY OR
— 541-814 not yet reported which blocks → SPOK, INC. 6630 MEDFORD OR
— 541-815 none assigned yet which blocks → UNITED STATES CELLULAR - OR 6349 BEND OR
— 541-819 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F NEWPORT OR
— 541-820 not yet reported which blocks → OREGON TEL. CORP. 2389 PRAIRIE CY OR
— 541-821 none assigned yet which blocks → UNITED STATES CELLULAR - OR 6349 MEDFORD OR
— 541-822 not yet reported which blocks → QWEST CORPORATION 9638 BLUE RIVER OR
— 541-823 5XXX6XXX7XXX · 3 holders which blocks → QWEST CORPORATION 9638 ONTARIO OR
— 541-824 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OR 750E COQUILLE OR
— 541-825 1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → ZIPLY FIBER OREGON, LLC DBA ZIPLY FIBER 3401 DAYS CREEK OR
— 541-826 not yet reported which blocks → UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 4520 WHITE CITY OR
— 541-828 8XXX which blocks → ASOTIN TEL CO 2404 FLORA TROY OR
— 541-829 2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 CORVALLIS OR
— 541-830 not yet reported which blocks → UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 4520 WHITE CITY OR
— 541-831 not yet reported which blocks → UNITED TELEPHONE - NORTHWEST DBA CENTURYLINK - OR 4520 WHITE CITY OR
— 541-832 4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → ZIPLY FIBER OREGON, LLC DBA ZIPLY FIBER 3401 GLENDALE OR
— 541-836 not yet reported which blocks → CENTURYTEL OF OREGON, INC. DBA CENTURYLINK 2360 DRAIN OR
— 541-837 1XXX2XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ZIPLY FIBER OREGON, LLC DBA ZIPLY FIBER 3401 AZALEA OR
— 541-839 2XXX5XXX9XXX · 3 holders which blocks → ZIPLY FIBER OREGON, LLC DBA ZIPLY FIBER 3401 CANYONVL OR
— 541-840 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MEDFORD OR
— 541-842 0XXX which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 MEDFORD OR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.