NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

17 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 13
EXIANT COMMUNICATIONS LLC 2
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
2020-10-20 858-293-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SNDG MRMS CA
2020-10-20 858-293-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNDG MRMS CA
2020-10-20 858-376-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C RNCHOBRNDO CA
2020-10-20 858-504-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C RNCHOSANFE CA
2020-10-20 858-504-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C RNCHOSANFE CA
2020-10-20 858-504-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C RNCHOSANFE CA
2020-10-20 858-585-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C LA MESA CA
2020-10-20 858-585-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LA MESA CA
2020-10-20 858-648-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C POWAY CA
2020-10-20 858-648-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C POWAY CA
2020-10-20 858-648-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C POWAY CA
2020-10-20 858-753-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C RNCHOBRNDO CA
2020-10-20 858-788-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C LA JOLLA CA
2020-10-20 858-788-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LA JOLLA CA
2020-10-20 858-788-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C LA JOLLA CA
2020-10-20 858-867-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SNDG SNDG CA
2020-10-20 858-867-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SNDG SNDG CA
2020-10-20 858-867-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SNDG SNDG CA
2020-10-20 858-867-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNDG SNDG CA
2020-10-20 858-901-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C RNCHOPNQTS CA
2020-10-20 858-901-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C RNCHOPNQTS CA
2020-10-20 858-901-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C RNCHOPNQTS CA
2020-10-20 858-955-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C PINEVALLEY CA
2020-10-20 858-955-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C PINEVALLEY CA
2020-10-15 858-289-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SNDG LVTA CA
2020-10-15 858-289-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SNDG LVTA CA
2020-10-15 858-977-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C DEL MAR CA
2020-10-15 858-977-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C DEL MAR CA
2020-10-14 858-683-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 RNCHOBRNDO CA
2020-10-13 858-758-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2020-10-09 858-289-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG LVTA CA
2020-10-09 858-758-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CAJON CA
2020-09-30 858-867-3XXX 3000–3999Assigned VONAGE AMERICA LLC 197D SNDG SNDG CA
2020-09-30 858-977-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DEL MAR CA
2020-09-18 858-758-6XXX 6000–6999Assigned FRACTEL, LLC 965H EL CAJON CA
2020-09-18 858-833-3XXX 3000–3999Assigned FRACTEL, LLC 965H SNDG SNDG CA
2020-09-18 858-955-5XXX 5000–5999Assigned FRACTEL, LLC 965H PINEVALLEY CA
2020-09-08 858-238-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-09-08 858-238-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-09-08 858-238-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-09-08 858-238-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-09-08 858-238-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-09-08 858-238-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-09-08 858-238-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-09-08 858-238-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-09-08 858-238-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-09-08 858-238-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EL CAJON CA
2020-08-27 858-504-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RNCHOSANFE CA
2020-08-27 858-504-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RNCHOSANFE CA
2020-08-25 858-289-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNDG LVTA 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.