NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 — NPA 956
8X8, INC. 1
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
2024-02-01 956-927 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C PHARR TX
2024-01-18 956-942 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAREDO TX
2023-12-21 956-201 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H MCALLEN TX
2023-12-21 956-804 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H BROWNSVL TX
2023-10-10 956-807 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F DONNA TX
2023-10-04 956-759 0XXX1XXX2XXX4XXX8XXX9XXX · 3 holders which blocks → STPCS JOINT VENTURE, LLC 4290 RAYMONDVL TX
2023-10-02 956-805 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 WESLACO TX
2023-09-18 956-757 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAREDO TX
2023-09-06 956-745 0XXX1XXX2XXX3XXX4XXX7XXX · 3 holders which blocks → ONVOY, LLC - TX 903C FALCON HTS TX
2023-08-23 956-713 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MCALLEN TX
2023-08-22 956-738 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - TX 903C RIGRANDECY TX
2023-08-22 956-741 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C MERCEDES TX
2023-07-19 956-709 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C BROWNSVL TX
2023-06-28 956-736 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LAREDO TX
2023-05-09 956-840 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J BROWNSVL TX
2023-04-19 956-828 0–9 XXXall 10 · 3 holders which blocks → STPCS JOINT VENTURE, LLC 4290 MCALLEN TX
2023-03-09 956-809 8XXX9XXX which blocks → HD CARRIER LLC 321J HARLINGEN TX
2023-01-20 956-705 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F PHARR TX
2023-01-03 956-692 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MISSION TX
2022-11-16 956-865 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - TX 903C WESLACO TX
2022-10-03 956-680 0–9 XXXwhole prefix which blocks → STPCS JOINT VENTURE, LLC 4290 MISSION TX
2022-09-26 956-679 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LAREDO TX
2022-08-02 956-769 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks → STPCS JOINT VENTURE, LLC 4290 RAYMONDVL TX
2022-07-29 956-439 0–9 XXXwhole prefix which blocks → STPCS JOINT VENTURE, LLC 4290 LAREDO TX
2022-07-28 956-339 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F EDINBURG TX
2022-07-26 956-315 0–9 XXXwhole prefix which blocks → STPCS JOINT VENTURE, LLC 4290 MCALLEN TX
2022-05-31 956-808 8XXX which blocks → TERRA NOVA TELECOM INC. 145J HARLINGEN TX
2022-05-06 956-327 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DOLORES TX
2022-04-04 956-737 0XXX1XXX2XXX7XXX8XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ZAPATA TX
2022-04-04 956-779 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SULLIVANCY TX
2022-04-04 956-837 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PHARR TX
2022-04-04 956-864 0XXX1XXX3XXX7XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J EDCOUCH TX
2022-03-03 956-751 0XXX1XXX8XXX9XXX · 3 holders which blocks → STPCS JOINT VENTURE, LLC 4290 ZAPATA TX
2022-03-02 956-676 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → CALLWORKS CORPORATION 475J BROWNSVL TX
2022-02-07 956-674 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LOSFRESNOS TX
2022-02-07 956-675 8XXX9XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LYFORD TX
2022-02-01 956-670 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J EDINBURG TX
2022-01-19 956-672 0–9 XXXall 10 · 4 holders which blocks → STPCS JOINT VENTURE, LLC 4290 MISSION TX
2022-01-14 956-694 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H BROWNSVL TX
2022-01-11 956-895 8XXX which blocks → TWILIO INTERNATIONAL, INC. 506J HARLINGEN TX
2021-12-29 956-669 0XXX1XXX9XXX which blocks → PEERLESS NETWORK OF TEXAS, LLC - TX 177F HARLINGEN TX
2021-12-15 956-658 0–9 XXXall 10 · 2 holders which blocks → STPCS JOINT VENTURE, LLC 4290 MCALLEN TX
2021-11-16 956-649 0–9 XXXall 10 · 2 holders which blocks → STPCS JOINT VENTURE, LLC 4290 LAREDO TX
2021-11-02 956-646 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F DONNA TX
2021-11-02 956-663 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - TX 903C EDINBURG TX
2021-09-28 956-643 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J BROWNSVL TX
2021-09-07 956-880 0XXX which blocks → SKYE TELECOM LLC DBA SKYETEL 622J HARLINGEN TX
2021-05-27 956-696 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H RIGRANDECY TX
2021-05-10 956-822 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H BROWNSVL TX
2021-05-10 956-855 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H MCALLEN TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.