NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

21 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
2019-02-15 559-468-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C WOODLAKE CA
2019-02-15 559-483-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SPRINGVL CA
2019-02-15 559-483-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SPRINGVL CA
2019-02-15 559-484-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C TIPTON CA
2019-02-15 559-484-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C TIPTON CA
2019-02-15 559-522-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C LEMON COVE CA
2019-02-15 559-522-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LEMON COVE CA
2019-02-15 559-531-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C TIVYVALLEY CA
2019-02-15 559-531-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C TIVYVALLEY CA
2019-02-15 559-543-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C HURON CA
2019-02-15 559-543-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C HURON CA
2019-02-15 559-615-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C PORTERVL CA
2019-02-15 559-615-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C PORTERVL CA
2019-02-15 559-615-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C PORTERVL CA
2019-02-15 559-634-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C KINGSBURG CA
2019-02-15 559-634-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C KINGSBURG CA
2019-02-15 559-648-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C DINUBA CA
2019-02-15 559-648-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C DINUBA CA
2019-02-15 559-653-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C FOWLER CA
2019-02-15 559-653-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C FOWLER CA
2019-02-15 559-678-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SQUAW VLY CA
2019-02-15 559-831-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MADERA CA
2019-02-15 559-831-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C MADERA CA
2019-02-15 559-831-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MADERA CA
2019-02-15 559-933-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C FIREBAUGH CA
2019-02-15 559-933-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C FIREBAUGH CA
2019-02-15 559-934-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C COALINGA CA
2019-02-15 559-934-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C COALINGA CA
2019-02-15 559-942-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C CARUTHERS CA
2019-02-15 559-942-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C CARUTHERS CA
2019-02-08 559-663-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C CHOWCHILLA CA
2019-02-08 559-663-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C CHOWCHILLA CA
2019-02-07 559-550-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 FRESNO CA
2019-01-31 559-551-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F REEDLEY CA
2019-01-29 559-210-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SANJOAQUIN CA
2019-01-29 559-210-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SANJOAQUIN CA
2019-01-29 559-235-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C DUNLAP CA
2019-01-29 559-235-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C DUNLAP CA
2019-01-29 559-242-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C MENDOTA CA
2019-01-29 559-242-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C MENDOTA CA
2019-01-29 559-345-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LEMOORE CA
2019-01-29 559-345-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LEMOORE CA
2019-01-29 559-520-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BURREL CA
2019-01-29 559-520-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BURREL CA
2019-01-29 559-523-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C PIXLEY CA
2019-01-29 559-523-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C PIXLEY CA
2019-01-29 559-526-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C STRATFORD CA
2019-01-29 559-526-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C STRATFORD CA
2019-01-29 559-527-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C TERRABELLA CA
2019-01-29 559-527-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C TERRABELLA 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.