NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 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, all time — NPA 831
TELNYX LLC 37
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
2026-04-07 831-340-7XXX 7000–7999Assigned TELNYX LLC 073H SANTA CRUZ CA
2025-09-24 831-339-4XXX 4000–4999Assigned TELNYX LLC 073H GONZALES CA
2025-08-12 831-329-0XXX 0000–0999Assigned TELNYX LLC 073H SALINAS CA
2023-11-09 831-280-8XXX 8000–8999Assigned TELNYX LLC 073H APTOS CA
2023-05-26 831-306-9XXX 9000–9999Assigned TELNYX LLC 073H CHUALAR CA
2023-04-13 831-946-0XXX 0000–0999Assigned TELNYX LLC 073H SANTA CRUZ CA
2023-02-24 831-230-5XXX 5000–5999Assigned TELNYX LLC 073H MONTEREY CA
2022-11-25 831-230-9XXX 9000–9999Assigned TELNYX LLC 073H MONTEREY CA
2022-11-22 831-428-0XXX 0000–0999Assigned TELNYX LLC 073H SANTA CRUZ CA
2022-06-09 831-215-0XXX 0000–0999Assigned TELNYX LLC 073H MONTEREY CA
2021-06-23 831-271-0XXX 0000–0999Assigned TELNYX LLC 073H HOLLISTER CA
2021-01-28 831-204-4XXX 4000–4999Assigned TELNYX LLC 073H MONTEREY CA
2021-01-28 831-303-1XXX 1000–1999Assigned TELNYX LLC 073H SAN ARDO CA
2021-01-27 831-243-7XXX 7000–7999Assigned TELNYX LLC 073H SALINAS CA
2020-10-27 831-461-3XXX 3000–3999Assigned TELNYX LLC 073H SANTA CRUZ CA
2018-06-21 831-221-3XXX 3000–3999Assigned TELNYX LLC 073H SAN ARDO CA
2018-06-21 831-232-3XXX 3000–3999Assigned TELNYX LLC 073H CHUALAR CA
2018-06-21 831-298-4XXX 4000–4999Assigned TELNYX LLC 073H CARMEL VLY CA
2018-06-21 831-300-2XXX 2000–2999Assigned TELNYX LLC 073H BIG SUR CA
2018-06-21 831-302-1XXX 1000–1999Assigned TELNYX LLC 073H SAN LUCAS CA
2018-06-21 831-315-4XXX 4000–4999Assigned TELNYX LLC 073H SOLEDAD CA
2018-06-21 831-525-7XXX 7000–7999Assigned TELNYX LLC 073H KING CITY CA
2018-06-21 831-613-8XXX 8000–8999Assigned TELNYX LLC 073H GREENFIELD CA
2018-06-21 831-623-8XXX 8000–8999Assigned TELNYX LLC 073H SAN JUAN CA
2018-06-21 831-731-3XXX 3000–3999Assigned TELNYX LLC 073H CASTROVL CA
2018-06-21 831-821-5XXX 5000–5999Assigned TELNYX LLC 073H TRES PINOS CA
2017-07-11 831-703-7XXX 7000–7999Assigned TELNYX LLC 073H BOULDERCRK CA
2017-07-10 831-268-1XXX 1000–1999Assigned TELNYX LLC 073H FELTON CA
2017-07-10 831-532-6XXX 6000–6999Assigned TELNYX LLC 073H BEN LOMOND CA
2017-05-31 831-257-8XXX 8000–8999Assigned TELNYX LLC 073H APTOS CA
2017-05-23 831-201-6XXX 6000–6999Assigned TELNYX LLC 073H SANTA CRUZ CA
2017-05-23 831-666-1XXX 1000–1999Assigned TELNYX LLC 073H WATSONVL CA
2017-03-15 831-245-4XXX 4000–4999Assigned TELNYX LLC 073H HOLLISTER CA
2017-03-15 831-276-7XXX 7000–7999Assigned TELNYX LLC 073H SALINAS CA
2017-03-15 831-290-4XXX 4000–4999Assigned TELNYX LLC 073H GONZALES CA
2017-03-15 831-293-1XXX 1000–1999Assigned TELNYX LLC 073H CARMEL CA
2016-12-16 831-230-1XXX 1000–1999Assigned TELNYX LLC 073H MONTEREY 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.