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 858
FRACTEL, LLC 35
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
2022-05-10 858-838-8XXX 8000–8999Assigned FRACTEL, LLC 965H CAMPO 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
2021-11-30 858-533-3XXX 3000–3999Assigned FRACTEL, LLC 965H HARBSNALPN CA
2021-09-24 858-544-4XXX 4000–4999Assigned FRACTEL, LLC 965H RNCHOBRNDO CA
2021-09-23 858-422-2XXX 2000–2999Assigned FRACTEL, LLC 965H CORONADO CA
2021-09-23 858-644-4XXX 4000–4999Assigned FRACTEL, LLC 965H SNDG MRMS CA
2021-09-22 858-355-5XXX 5000–5999Assigned FRACTEL, LLC 965H SNDG SNDG CA
2021-08-05 858-844-4XXX 4000–4999Assigned FRACTEL, LLC 965H EL CAJON CA
2021-08-05 858-933-3XXX 3000–3999Assigned FRACTEL, LLC 965H DEL MAR CA
2021-07-13 858-377-7XXX 7000–7999Assigned FRACTEL, LLC 965H POWAY CA
2021-07-13 858-944-4XXX 4000–4999Assigned FRACTEL, LLC 965H SNDG LVTA CA
2021-06-04 858-477-7XXX 7000–7999Assigned FRACTEL, LLC 965H SNDG SNDG CA
2021-04-23 858-744-4XXX 4000–4999Assigned FRACTEL, LLC 965H SNDG SNDG CA
2021-04-23 858-855-5XXX 5000–5999Assigned FRACTEL, LLC 965H EL CAJON CA
2021-04-22 858-567-8XXX 8000–8999Assigned FRACTEL, LLC 965H LA JOLLA CA
2021-03-16 858-466-6XXX 6000–6999Assigned FRACTEL, LLC 965H LA MESA CA
2021-03-16 858-786-7XXX 7000–7999Assigned FRACTEL, LLC 965H NATIONALCY CA
2021-01-27 858-399-9XXX 9000–9999Assigned FRACTEL, LLC 965H CORONADO CA
2021-01-13 858-588-8XXX 8000–8999Assigned FRACTEL, LLC 965H RNCHOBRNDO CA
2021-01-05 858-789-9XXX 9000–9999Assigned FRACTEL, LLC 965H SNDG SNDG CA
2021-01-05 858-899-9XXX 9000–9999Assigned FRACTEL, LLC 965H EL CAJON CA
2020-11-09 858-667-8XXX 8000–8999Assigned FRACTEL, LLC 965H SNDG LVTA CA
2020-09-18 858-758-6XXX 6000–6999Assigned FRACTEL, LLC 965H EL CAJON CA
2020-09-18 858-833-3XXX 3000–3999Assigned FRACTEL, LLC 965H SNDG SNDG CA
2020-09-18 858-955-5XXX 5000–5999Assigned FRACTEL, LLC 965H PINEVALLEY CA
2020-07-10 858-599-9XXX 9000–9999Assigned FRACTEL, LLC 965H NATIONALCY CA
2020-07-10 858-867-5XXX 5000–5999Assigned FRACTEL, LLC 965H SNDG SNDG CA
2020-03-30 858-977-7XXX 7000–7999Assigned FRACTEL, LLC 965H DEL MAR CA
2019-03-19 858-388-8XXX 8000–8999Assigned FRACTEL, LLC 965H EL CAJON CA
2019-03-19 858-585-8XXX 8000–8999Assigned FRACTEL, LLC 965H LA MESA CA
2019-03-19 858-788-8XXX 8000–8999Assigned FRACTEL, LLC 965H LA JOLLA CA
2019-03-19 858-988-8XXX 8000–8999Assigned FRACTEL, LLC 965H SNDG SNDG 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.