NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 903
ONVOY, LLC - TX 6
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 3
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2010-08-06 903-617-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TYLER TX
2010-08-05 903-326-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F RICE TX
2010-08-05 903-374-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F GLADEWATER TX
2010-08-05 903-702-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MARSHALL TX
2010-07-26 903-497-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MINEOLA TX
2010-07-22 903-485-8XXX 8000–8999Assigned CUMBY TELEPHONE COOPERATIVE, INC. 4042 SHIRLEY TX
2010-07-20 903-380-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MTPLEASANT TX
2010-07-16 903-401-4XXX 4000–4999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D PARIS TX
2010-07-16 903-462-5XXX 5000–5999Assigned FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D DENISON TX
2010-07-14 903-805-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TYLER TX
2010-07-13 903-204-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MTPLEASANT TX
2010-07-13 903-204-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MTPLEASANT TX
2010-07-13 903-946-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 PITTSBURG TX
2010-07-13 903-946-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 PITTSBURG TX
2010-06-29 903-392-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HENDERSON TX
2010-06-29 903-392-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HENDERSON TX
2010-06-21 903-373-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 PALESTINE TX
2010-06-21 903-373-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 PALESTINE TX
2010-06-21 903-475-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LONGVIEW TX
2010-06-21 903-804-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 ATHENS TX
2010-06-21 903-805-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TYLER TX
2010-06-17 903-747-3XXX 3000–3999Assigned CSC VOICE, LLC 612K TYLER TX
2010-06-16 903-702-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MARSHALL TX
2010-06-15 903-204-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MTPLEASANT TX
2010-06-11 903-259-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 GREENVILLE TX
2010-06-09 903-771-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SHERMAN TX
2010-06-07 903-625-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 JACKSONVL TX
2010-05-28 903-487-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C SHERMAN TX
2010-05-27 903-204-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F MTPLEASANT TX
2010-05-27 903-218-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F KILGORE TX
2010-05-27 903-265-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CARTHAGE TX
2010-05-27 903-284-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F JACKSONVL TX
2010-05-27 903-650-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F ATLANTA TX
2010-05-27 903-708-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F PITTSBURG TX
2010-05-27 903-722-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F HENDERSON TX
2010-05-27 903-871-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F WHITEHOUSE TX
2010-05-27 903-951-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F SULPHURSPG TX
2010-05-14 903-218-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F KILGORE TX
2010-05-14 903-910-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MABANK TX
2010-05-10 903-482-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 VANALSTYNE TX
2010-05-07 903-905-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PARIS TX
2010-04-26 903-393-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 JACKSONVL TX
2010-04-20 903-475-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LONGVIEW TX
2010-04-20 903-475-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LONGVIEW TX
2010-04-20 903-475-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 LONGVIEW TX
2010-04-20 903-707-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TYLER TX
2010-04-20 903-707-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TYLER TX
2010-04-20 903-707-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TYLER TX
2010-04-20 903-707-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TYLER TX
2010-04-19 903-263-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 CARTHAGE TX

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.