NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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 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
2016-11-02 628-238-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F IGNACIO CA
2016-10-18 628-251-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFC CNTRL CA
2016-10-18 628-251-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFC CNTRL CA
2016-10-18 628-251-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFC CNTRL CA
2016-10-18 628-251-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFC CNTRL CA
2016-10-18 628-251-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFC CNTRL CA
2016-10-18 628-256-0XXX 0000–0999Assigned SONIC TELECOM, LLC - CA 433E SNFC MT-EV CA
2016-10-18 628-256-1XXX 1000–1999Assigned SONIC TELECOM, LLC - CA 433E SNFC MT-EV CA
2016-10-05 628-215-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C MILLVALLEY CA
2016-10-05 628-215-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MILLVALLEY CA
2016-10-05 628-215-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C MILLVALLEY CA
2016-10-05 628-215-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C MILLVALLEY CA
2016-10-04 628-214-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C NOVATO CA
2016-10-03 628-204-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C NICASIO CA
2016-10-03 628-204-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C NICASIO CA
2016-10-03 628-239-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SNFC JUNPR CA
2016-10-03 628-239-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SNFC JUNPR CA
2016-10-03 628-239-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNFC JUNPR CA
2016-09-30 628-215-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MILLVALLEY CA
2016-09-28 628-238-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C IGNACIO CA
2016-09-22 628-215-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MILLVALLEY CA
2016-09-22 628-239-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFC JUNPR CA
2016-09-22 628-244-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELVEDERE CA
2016-09-21 628-254-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SAUSALITO CA
2016-09-20 628-212-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CORTEMADRA CA
2016-09-20 628-212-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CORTEMADRA CA
2016-09-20 628-212-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CORTEMADRA CA
2016-09-20 628-214-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NOVATO CA
2016-09-20 628-215-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MILLVALLEY CA
2016-09-20 628-215-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MILLVALLEY CA
2016-09-20 628-215-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MILLVALLEY CA
2016-09-20 628-215-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MILLVALLEY CA
2016-09-20 628-216-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POINTREYES CA
2016-09-20 628-216-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POINTREYES CA
2016-09-19 628-210-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F INVERNESS CA
2016-09-16 628-203-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C STNSN-BLNS CA
2016-09-16 628-204-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C NICASIO CA
2016-09-15 628-201-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFC CNTRL CA
2016-09-15 628-253-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN RAFAEL CA
2016-09-15 628-254-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAUSALITO CA
2016-09-14 628-204-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NICASIO CA
2016-09-14 628-204-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NICASIO CA
2016-09-14 628-204-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NICASIO CA
2016-09-14 628-204-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NICASIO CA
2016-09-14 628-229-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POINTREYES CA
2016-09-14 628-229-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POINTREYES CA
2016-09-14 628-229-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POINTREYES CA
2016-09-14 628-229-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POINTREYES CA
2016-09-14 628-235-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SNFC CNTRL CA
2016-09-14 628-245-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MILLVALLEY 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.