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 209
PACIFIC BELL 181
NEW CINGULAR WIRELESS PCS, LLC 128
ONVOY, LLC - CA 76
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 71
T-MOBILE USA, INC. 69
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
— 209-625 0XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → IP HORIZON LLC 515J LODI CA
— 209-626 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → IP HORIZON LLC 515J MERCED CA
— 209-627 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → IP HORIZON LLC 515J TRACY CA
— 209-628 2XXX3XXX4XXX5XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MERCED CA
— 209-629 6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MANTECA CA
— 209-631 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MERCED CA
— 209-632 not yet reported which blocks → PACIFIC BELL 9740 TURLOCK CA
— 209-633 8XXX9XXX · 2 holders which blocks → UTILITY TELECOM GROUP, LLC - CA 9262 TURLOCK CA
— 209-634 not yet reported which blocks → PACIFIC BELL 9740 TURLOCK CA
— 209-639 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 STOCKTON CA
— 209-642 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LODI CA
— 209-644 not yet reported which blocks → ONVOY, LLC - CA 649C STOCKTON CA
— 209-645 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C STOCKTON CA
— 209-648 7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TURLOCK CA
— 209-649 none assigned yet which blocks → T-MOBILE USA, INC. 6529 STOCKTON CA
— 209-652 none assigned yet which blocks → METROPCS, INC. 5562 MODESTO CA
— 209-653 not yet reported which blocks → ONVOY, LLC - CA 649C MODESTO CA
— 209-656 not yet reported which blocks → PACIFIC BELL 9740 TURLOCK CA
— 209-658 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MERCED CA
— 209-659 0–9 XXXall 10 · 5 holders which blocks → TWILIO INTERNATIONAL, INC. 506J STOCKTON CA
— 209-662 6XXX7XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 STOCKTON CA
— 209-664 not yet reported which blocks → PACIFIC BELL 9740 TURLOCK CA
— 209-665 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MANTECA CA
— 209-666 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CA 649C TRACY CA
— 209-667 not yet reported which blocks → PACIFIC BELL 9740 TURLOCK CA
— 209-668 not yet reported which blocks → PACIFIC BELL 9740 TURLOCK CA
— 209-669 not yet reported which blocks → PACIFIC BELL 9740 TURLOCK CA
— 209-670 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 STOCKTON CA
— 209-671 2XXX4XXX5XXX · 2 holders which blocks → ONVOY, LLC - CA 649C PINECREST CA
— 209-674 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - CA 649C SANANDREAS CA
— 209-675 4XXX7XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LOS BANOS CA
— 209-677 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - CA 649C SNRA JUNO CA
— 209-678 4XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TURLOCK CA
— 209-679 7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MANTECA CA
— 209-680 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST PHONE OF CALIFORNIA, LLC 394L PLYMOUTH CA
— 209-681 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C MODESTO CA
— 209-682 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J COULTERVL CA
— 209-683 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E ATWATER CA
— 209-684 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C STOCKTON CA
— 209-690 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - CA 649C CROWS LDG CA
— 209-691 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E ESCALON CA
— 209-694 3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → PACIFIC BELL 9740 SNRA MAIN CA
— 209-700 not yet reported which blocks → CA
— 209-704 6XXX7XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LOS BANOS CA
— 209-708 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 SNRA MAIN CA
— 209-710 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST PHONE OF CALIFORNIA, LLC 394L LOS BANOS CA
— 209-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 209-712 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LODI CA
— 209-713 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PINECREST CA
— 209-714 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - CA 649C SUTTER CRK CA

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.