NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

22 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 559
NEW CINGULAR WIRELESS PCS, LLC 4
HD CARRIER LLC 4
EXIANT COMMUNICATIONS LLC 4
BANDWIDTH.COM CLEC, LLC - CA 4
OPENTACT INC. 2
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
2022-08-17 559-808-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C LINDSAY CA
2022-08-16 559-607-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DINUBA CA
2022-08-12 559-526-9XXX 9000–9999Assigned COMMIO, LLC 939H STRATFORD CA
2022-08-11 559-929-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 HANFORD CA
2022-08-10 559-767-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CLOVIS CA
2022-07-29 559-964-9XXX 9000–9999Assigned HD CARRIER LLC 321J LATON CA
2022-07-27 559-522-9XXX 9000–9999Assigned BOOST SUBSCRIBERCO L.L.C. 490J LEMON COVE CA
2022-07-25 559-774-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C FRESNO CA
2022-07-20 559-378-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TULARE CA
2022-07-20 559-378-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TULARE CA
2022-07-20 559-378-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TULARE CA
2022-07-20 559-507-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MADERA CA
2022-07-20 559-616-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TULARE CA
2022-07-20 559-716-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MADERA CA
2022-07-07 559-669-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H FRESNO CA
2022-07-07 559-669-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H FRESNO CA
2022-07-07 559-669-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H FRESNO CA
2022-07-07 559-669-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H FRESNO CA
2022-07-05 559-649-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CLOVIS CA
2022-06-30 559-806-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J VISALIA CA
2022-06-30 559-828-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SELMA CA
2022-06-30 559-828-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SELMA CA
2022-06-22 559-507-5XXX 5000–5999Assigned COMMIO, LLC 939H MADERA CA
2022-06-22 559-649-4XXX 4000–4999Assigned COMMIO, LLC 939H CLOVIS CA
2022-06-22 559-812-0XXX 0000–0999Assigned COMMIO, LLC 939H CHOWCHILLA CA
2022-06-22 559-929-1XXX 1000–1999Assigned COMMIO, LLC 939H HANFORD CA
2022-06-21 559-669-3XXX 3000–3999Assigned VONAGE AMERICA LLC 197D FRESNO CA
2022-06-10 559-996-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CORCORAN CA
2022-06-09 559-406-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J DINUBA CA
2022-06-09 559-617-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L KINGSBURG CA
2022-06-03 559-378-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TULARE CA
2022-06-03 559-649-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CLOVIS CA
2022-06-03 559-649-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CLOVIS CA
2022-05-27 559-764-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MADERA CA
2022-05-27 559-764-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J MADERA CA
2022-05-26 559-218-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FRESNO CA
2022-05-26 559-218-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J FRESNO CA
2022-05-26 559-649-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CLOVIS CA
2022-05-26 559-649-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CLOVIS CA
2022-05-26 559-649-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLOVIS CA
2022-05-18 559-376-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TERRABELLA CA
2022-05-18 559-669-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H FRESNO CA
2022-05-12 559-620-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SELMA CA
2022-05-06 559-844-1XXX 1000–1999Assigned TELNYX LLC 073H MIRANTPHST CA
2022-05-03 559-929-0XXX 0000–0999Assigned METROPCS, INC. 5562 HANFORD CA
2022-05-03 559-939-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRESNO CA
2022-05-03 559-939-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRESNO CA
2022-05-03 559-939-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRESNO CA
2022-05-03 559-939-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRESNO CA
2022-05-03 559-939-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRESNO CA

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.