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
2020-05-12 628-356-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C NICASIO CA
2020-05-12 628-356-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C NICASIO CA
2020-05-11 628-262-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H BELVEDERE CA
2020-04-22 628-269-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN RAFAEL CA
2020-04-20 628-286-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SNFC MT-EV CA
2020-04-20 628-286-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SNFC MT-EV CA
2020-04-15 628-267-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2020-04-10 628-286-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2020-04-10 628-286-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2020-04-10 628-286-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2020-04-10 628-286-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2020-04-10 628-286-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2020-04-10 628-286-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC MT-EV CA
2020-04-08 628-260-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFC CNTRL CA
2020-04-07 628-244-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BELVEDERE CA
2020-04-07 628-244-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BELVEDERE CA
2020-03-25 628-209-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NOVATO CA
2020-03-11 628-271-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2020-03-11 628-271-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2020-03-11 628-271-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2020-03-11 628-271-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2020-03-11 628-271-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2020-03-11 628-271-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2020-03-09 628-269-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN RAFAEL CA
2020-03-03 628-286-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFC MT-EV CA
2020-03-03 628-465-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAUSALITO CA
2020-03-03 628-529-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFC JUNPR CA
2020-02-25 628-266-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CORTEMADRA CA
2020-02-24 628-271-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNFC CNTRL CA
2020-02-03 628-286-1XXX 1000–1999Assigned WIDE VOICE, LLC - CA 252F SNFC MT-EV CA
2020-01-14 628-758-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C SNFC MT-EV CA
2020-01-14 628-758-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SNFC MT-EV CA
2019-12-26 628-268-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFC CNTRL CA
2019-12-18 628-202-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BELVEDERE CA
2019-12-11 628-202-5XXX 5000–5999Assigned TELNYX LLC 073H BELVEDERE CA
2019-12-02 628-280-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNFC MT-EV CA
2019-11-22 628-356-7XXX 7000–7999Assigned FRACTEL, LLC 965H NICASIO CA
2019-11-22 628-356-9XXX 9000–9999Assigned FRACTEL, LLC 965H NICASIO CA
2019-11-12 628-209-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C NOVATO CA
2019-11-12 628-265-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C INVERNESS CA
2019-11-04 628-271-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H SNFC CNTRL CA
2019-10-23 628-269-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN RAFAEL CA
2019-10-14 628-529-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNFC JUNPR CA
2019-10-14 628-529-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNFC JUNPR CA
2019-10-04 628-272-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C POINTREYES CA
2019-09-30 628-209-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C NOVATO CA
2019-09-30 628-269-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SAN RAFAEL CA
2019-09-26 628-758-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFC MT-EV CA
2019-09-23 628-271-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL CA
2019-09-23 628-271-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNFC CNTRL 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.