NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 628
FRACTEL, LLC 43
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
2022-05-27 628-789-9XXX 9000–9999Assigned FRACTEL, LLC 965H SNFC CNTRL CA
2022-05-24 628-386-3XXX 3000–3999Assigned FRACTEL, LLC 965H CORTEMADRA CA
2022-02-22 628-488-8XXX 8000–8999Assigned FRACTEL, LLC 965H SNFC CNTRL CA
2021-07-15 628-377-7XXX 7000–7999Assigned FRACTEL, LLC 965H IGNACIO CA
2021-07-15 628-577-7XXX 7000–7999Assigned FRACTEL, LLC 965H NICASIO CA
2021-07-15 628-677-7XXX 7000–7999Assigned FRACTEL, LLC 965H MILLVALLEY CA
2021-07-15 628-699-9XXX 9000–9999Assigned FRACTEL, LLC 965H SAUSALITO CA
2021-07-15 628-866-6XXX 6000–6999Assigned FRACTEL, LLC 965H BELVEDERE CA
2021-07-08 628-299-9XXX 9000–9999Assigned FRACTEL, LLC 965H SNFC JUNPR CA
2021-07-07 628-277-7XXX 7000–7999Assigned FRACTEL, LLC 965H SAN RAFAEL CA
2021-07-07 628-466-6XXX 6000–6999Assigned FRACTEL, LLC 965H SNFC CNTRL CA
2021-06-17 628-587-8XXX 8000–8999Assigned FRACTEL, LLC 965H NOVATO CA
2021-02-11 628-477-7XXX 7000–7999Assigned FRACTEL, LLC 965H MILLVALLEY CA
2021-02-11 628-588-8XXX 8000–8999Assigned FRACTEL, LLC 965H SNFC CNTRL CA
2021-02-11 628-788-8XXX 8000–8999Assigned FRACTEL, LLC 965H SNFC MT-EV CA
2021-01-27 628-388-8XXX 8000–8999Assigned FRACTEL, LLC 965H INVERNESS CA
2021-01-27 628-399-9XXX 9000–9999Assigned FRACTEL, LLC 965H SNFC MT-EV CA
2020-11-17 628-667-8XXX 8000–8999Assigned FRACTEL, LLC 965H SAN RAFAEL CA
2020-11-16 628-724-6XXX 6000–6999Assigned FRACTEL, LLC 965H BELVEDERE CA
2020-11-03 628-786-7XXX 7000–7999Assigned FRACTEL, LLC 965H SNFC JUNPR CA
2020-09-18 628-432-8XXX 8000–8999Assigned FRACTEL, LLC 965H SNFC MT-EV CA
2020-09-18 628-946-3XXX 3000–3999Assigned FRACTEL, LLC 965H SNFC CNTRL CA
2020-08-25 628-345-6XXX 6000–6999Assigned FRACTEL, LLC 965H POINTREYES CA
2020-08-25 628-842-5XXX 5000–5999Assigned FRACTEL, LLC 965H CORTEMADRA CA
2020-07-10 628-348-7XXX 7000–7999Assigned FRACTEL, LLC 965H BELVEDERE CA
2020-07-10 628-688-8XXX 8000–8999Assigned FRACTEL, LLC 965H SNFC CNTRL CA
2020-07-10 628-732-5XXX 5000–5999Assigned FRACTEL, LLC 965H SNFC JUNPR CA
2020-07-10 628-766-3XXX 3000–3999Assigned FRACTEL, LLC 965H STNSN-BLNS CA
2020-07-10 628-766-6XXX 6000–6999Assigned FRACTEL, LLC 965H STNSN-BLNS CA
2020-07-10 628-977-7XXX 7000–7999Assigned FRACTEL, LLC 965H 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
2019-06-19 628-266-6XXX 6000–6999Assigned FRACTEL, LLC 965H CORTEMADRA CA
2019-06-19 628-288-6XXX 6000–6999Assigned FRACTEL, LLC 965H MILLVALLEY CA
2019-06-19 628-433-3XXX 3000–3999Assigned FRACTEL, LLC 965H IGNACIO CA
2019-05-20 628-465-8XXX 8000–8999Assigned FRACTEL, LLC 965H SAUSALITO CA
2019-05-20 628-529-3XXX 3000–3999Assigned FRACTEL, LLC 965H SNFC JUNPR CA
2019-05-20 628-529-9XXX 9000–9999Assigned FRACTEL, LLC 965H SNFC JUNPR CA
2019-03-19 628-288-8XXX 8000–8999Assigned FRACTEL, LLC 965H MILLVALLEY CA
2019-03-19 628-336-8XXX 8000–8999Assigned FRACTEL, LLC 965H SAN RAFAEL CA
2019-03-19 628-628-2XXX 2000–2999Assigned FRACTEL, LLC 965H SNFC CNTRL CA
2019-03-19 628-628-8XXX 8000–8999Assigned FRACTEL, LLC 965H SNFC CNTRL CA
2019-03-19 628-758-6XXX 6000–6999Assigned FRACTEL, LLC 965H SNFC MT-EV 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.