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
2022-07-01 858-898-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C CORONADO CA
2022-06-30 858-321-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J SNDG SNDG CA
2022-06-30 858-878-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA MESA CA
2022-06-22 858-838-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CAMPO CA
2022-06-21 858-687-5XXX 5000–5999Assigned VONAGE AMERICA LLC 197D POWAY CA
2022-06-16 858-644-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNDG MRMS CA
2022-06-15 858-899-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CAJON CA
2022-05-27 858-318-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CHULAVISTA CA
2022-05-27 858-318-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CHULAVISTA CA
2022-05-25 858-828-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 SNDG SNDG CA
2022-05-18 858-828-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG SNDG CA
2022-05-17 858-838-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C CAMPO CA
2022-05-12 858-838-0XXX 0000–0999Assigned TELNYX LLC 073H CAMPO CA
2022-05-11 858-533-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HARBSNALPN CA
2022-05-10 858-838-8XXX 8000–8999Assigned FRACTEL, LLC 965H CAMPO CA
2022-05-05 858-808-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H NATIONALCY CA
2022-05-05 858-808-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H NATIONALCY CA
2022-04-28 858-500-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C LA JOLLA CA
2022-04-28 858-768-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LA JOLLA CA
2022-04-27 858-665-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LA JOLLA CA
2022-04-25 858-828-0XXX 0000–0999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2022-04-25 858-828-1XXX 1000–1999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2022-04-25 858-828-2XXX 2000–2999Assigned METROPCS, INC. 5562 SNDG SNDG CA
2022-04-22 858-533-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C HARBSNALPN CA
2022-04-22 858-533-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C HARBSNALPN CA
2022-04-11 858-325-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG LVTA CA
2022-04-05 858-463-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C CHULAVISTA CA
2022-04-05 858-463-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C CHULAVISTA CA
2022-04-01 858-422-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C CORONADO CA
2022-04-01 858-422-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C CORONADO CA
2022-03-25 858-462-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NATIONALCY CA
2022-03-16 858-463-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2022-03-16 858-463-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2022-03-12 858-899-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL CAJON CA
2022-03-04 858-723-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA MESA CA
2022-02-18 858-808-8XXX 8000–8999Assigned FRACTEL, LLC 965H NATIONALCY CA
2022-02-18 858-828-8XXX 8000–8999Assigned FRACTEL, LLC 965H SNDG SNDG CA
2022-02-18 858-878-8XXX 8000–8999Assigned FRACTEL, LLC 965H LA MESA CA
2022-02-18 858-898-8XXX 8000–8999Assigned FRACTEL, LLC 965H CORONADO CA
2022-02-18 858-899-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 EL CAJON CA
2022-02-17 858-787-8XXX 8000–8999Assigned TON80 COMMUNICATIONS, LLC 516J PINEVALLEY CA
2022-02-14 858-463-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2022-02-14 858-463-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CHULAVISTA CA
2022-02-10 858-533-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C HARBSNALPN CA
2022-02-10 858-533-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C HARBSNALPN CA
2022-01-31 858-723-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C LA MESA CA
2022-01-27 858-665-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LA JOLLA CA
2022-01-26 858-310-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RNCHOSANFE CA
2022-01-26 858-723-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA MESA CA
2022-01-19 858-665-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J LA JOLLA 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.