NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

25 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 858
ONVOY, LLC - CA 20
EXIANT COMMUNICATIONS LLC 2
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 1
NEW CINGULAR WIRELESS PCS, LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-11-16 858-428-3XXX 3000–3999Assigned TELNYX LLC 073H RNCHOPNQTS CA
2021-11-15 858-310-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H RNCHOSANFE CA
2021-11-15 858-310-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H RNCHOSANFE CA
2021-11-15 858-371-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H RNCHOPNQTS CA
2021-11-15 858-780-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H RNCHOPNQTS CA
2021-11-10 858-327-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SNDG SNDG CA
2021-11-02 858-644-0XXX 0000–0999Assigned TELNYX LLC 073H SNDG MRMS CA
2021-10-27 858-844-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2021-10-27 858-844-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2021-10-27 858-844-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2021-10-26 858-328-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA MESA CA
2021-10-22 858-933-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H DEL MAR CA
2021-10-20 858-325-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H SNDG LVTA CA
2021-10-20 858-325-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SNDG LVTA CA
2021-10-20 858-325-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SNDG LVTA CA
2021-10-20 858-325-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SNDG LVTA CA
2021-10-20 858-644-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H SNDG MRMS CA
2021-10-20 858-644-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SNDG MRMS CA
2021-10-20 858-644-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SNDG MRMS CA
2021-10-20 858-644-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H SNDG MRMS CA
2021-10-20 858-644-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H SNDG MRMS CA
2021-10-20 858-944-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H SNDG LVTA CA
2021-10-19 858-355-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H SNDG SNDG CA
2021-10-19 858-355-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H SNDG SNDG CA
2021-10-19 858-355-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H SNDG SNDG CA
2021-10-19 858-355-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SNDG SNDG CA
2021-10-19 858-355-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H SNDG SNDG CA
2021-10-18 858-765-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H LA JOLLA CA
2021-10-18 858-765-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H LA JOLLA CA
2021-10-15 858-955-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H PINEVALLEY CA
2021-10-15 858-955-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H PINEVALLEY CA
2021-10-13 858-323-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H CHULAVISTA CA
2021-10-13 858-323-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H CHULAVISTA CA
2021-10-11 858-844-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2021-10-11 858-844-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2021-10-05 858-765-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7147 LA JOLLA CA
2021-09-29 858-422-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C CORONADO CA
2021-09-29 858-422-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C CORONADO CA
2021-09-24 858-544-4XXX 4000–4999Assigned FRACTEL, LLC 965H RNCHOBRNDO CA
2021-09-23 858-422-2XXX 2000–2999Assigned FRACTEL, LLC 965H CORONADO CA
2021-09-23 858-644-4XXX 4000–4999Assigned FRACTEL, LLC 965H SNDG MRMS CA
2021-09-22 858-355-5XXX 5000–5999Assigned FRACTEL, LLC 965H SNDG SNDG CA
2021-09-22 858-944-1XXX 1000–1999Assigned COMMIO, LLC 939H SNDG LVTA CA
2021-09-22 858-944-2XXX 2000–2999Assigned COMMIO, LLC 939H SNDG LVTA CA
2021-09-22 858-944-3XXX 3000–3999Assigned COMMIO, LLC 939H SNDG LVTA CA
2021-09-22 858-944-7XXX 7000–7999Assigned COMMIO, LLC 939H SNDG LVTA CA
2021-09-20 858-377-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C POWAY CA
2021-09-20 858-377-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C POWAY CA
2021-09-20 858-933-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DEL MAR CA
2021-09-20 858-933-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DEL MAR 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.