NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 628
EXIANT COMMUNICATIONS LLC 3
ONVOY, LLC - CA 2
TELNYX LLC 1
OPENTACT INC. 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
2026-04-03 628-977-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC MT-EV CA
2026-03-11 628-253-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SAN RAFAEL CA
2026-01-30 628-327-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SAN RAFAEL CA
2026-01-16 628-327-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN RAFAEL CA
2026-01-14 628-327-7XXX 7000–7999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SAN RAFAEL CA
2026-01-14 628-327-8XXX 8000–8999Assigned BOOST SUBSCRIBERCO L.L.C. 490J SAN RAFAEL CA
2025-12-12 628-327-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SAN RAFAEL CA
2025-12-10 628-315-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BELVEDERE CA
2025-12-10 628-315-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BELVEDERE CA
2025-12-10 628-315-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BELVEDERE CA
2025-12-05 628-356-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J NICASIO CA
2025-11-28 628-466-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2025-11-07 628-316-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2025-11-07 628-316-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2025-11-07 628-316-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2025-11-07 628-316-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2025-11-07 628-998-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2025-11-07 628-998-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2025-11-07 628-998-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2025-11-07 628-998-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2025-11-06 628-254-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SAUSALITO CA
2025-11-06 628-329-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SAUSALITO CA
2025-11-04 628-327-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SAN RAFAEL CA
2025-10-31 628-310-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BELVEDERE CA
2025-10-31 628-310-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BELVEDERE CA
2025-10-22 628-327-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN RAFAEL CA
2025-10-02 628-301-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C NOVATO CA
2025-09-03 628-327-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C SAN RAFAEL CA
2025-08-27 628-308-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC MT-EV CA
2025-08-05 628-998-9XXX 9000–9999Assigned WAVENATION, LLC 700J SNFC CNTRL CA
2025-07-07 628-297-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC MT-EV CA
2025-06-25 628-682-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C NOVATO CA
2025-05-22 628-310-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BELVEDERE CA
2025-05-16 628-308-8XXX 8000–8999Assigned SONIC TELECOM, LLC - CA 433E SNFC MT-EV CA
2025-05-15 628-291-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MILLVALLEY CA
2025-05-15 628-312-2XXX 2000–2999Assigned LEAP TELECOM, LLC 616J SNFC CNTRL CA
2025-05-15 628-312-3XXX 3000–3999Assigned LEAP TELECOM, LLC 616J SNFC CNTRL CA
2025-04-28 628-335-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2025-04-28 628-335-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2025-04-28 628-335-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2025-04-28 628-335-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2025-04-28 628-335-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2025-04-28 628-335-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2025-04-28 628-335-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2025-04-28 628-335-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2025-04-28 628-335-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2025-04-28 628-335-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2025-04-22 628-305-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H SAN RAFAEL CA
2025-04-22 628-305-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H SAN RAFAEL CA
2025-04-07 628-328-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.