NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

15 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 341
ONVOY, LLC - CA 8
NEW CINGULAR WIRELESS PCS, LLC 3
BANDWIDTH.COM CLEC, LLC - CA 3
SONIC TELECOM, LLC - CA 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
2021-01-20 341-201-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C FRNK OLIVR CA
2021-01-20 341-201-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C FRNK OLIVR CA
2021-01-20 341-201-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C FRNK OLIVR CA
2021-01-20 341-201-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C FRNK OLIVR CA
2021-01-13 341-234-5XXX 5000–5999Assigned FRACTEL, LLC 965H OKLD ALMD CA
2021-01-11 341-400-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 OKLD FRTVL CA
2021-01-11 341-400-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 OKLD FRTVL CA
2021-01-11 341-400-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OKLD FRTVL CA
2021-01-04 341-500-0XXX 0000–0999Assigned FRACTEL, LLC 965H ELSBR-PINL CA
2021-01-04 341-500-5XXX 5000–5999Assigned FRACTEL, LLC 965H ELSBR-PINL CA
2020-12-29 341-465-8XXX 8000–8999Assigned FRACTEL, LLC 965H FRNK MAIN CA
2020-12-17 341-201-0XXX 0000–0999Assigned TELNYX LLC 073H FRNK OLIVR CA
2020-12-14 341-200-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HRCUL-RODE CA
2020-12-14 341-314-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2020-12-14 341-314-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2020-12-14 341-314-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2020-12-14 341-314-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2020-12-14 341-314-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2020-12-11 341-895-9XXX 9000–9999Assigned TELNYX LLC 073H OKLD ALMD CA
2020-12-10 341-800-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2020-12-10 341-800-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2020-12-10 341-800-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2020-12-10 341-800-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2020-12-10 341-800-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2020-12-07 341-314-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C ELSBR-PINL CA
2020-12-07 341-314-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C ELSBR-PINL CA
2020-12-07 341-314-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C ELSBR-PINL CA
2020-12-07 341-314-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C ELSBR-PINL CA
2020-12-03 341-300-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C RICHMOND CA
2020-12-03 341-300-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C RICHMOND CA
2020-12-03 341-300-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C RICHMOND CA
2020-12-03 341-600-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C ELSBR-PINL CA
2020-12-03 341-799-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C RICHMOND CA
2020-11-16 341-895-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C OKLD ALMD CA
2020-11-16 341-895-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C OKLD ALMD CA
2020-11-16 341-895-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C OKLD ALMD CA
2020-11-14 341-900-0XXX 0000–0999Assigned FRACTEL, LLC 965H CROCKETT CA
2020-11-06 341-444-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C CROCKETT CA
2020-11-06 341-444-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C CROCKETT CA
2020-10-28 341-600-7XXX 7000–7999Assigned TELNYX LLC 073H ELSBR-PINL CA
2020-10-27 341-799-0XXX 0000–0999Assigned TELNYX LLC 073H RICHMOND CA
2020-10-25 341-529-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FRNK MAIN CA
2020-10-25 341-529-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FRNK MAIN CA
2020-10-25 341-529-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FRNK MAIN CA
2020-10-25 341-529-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FRNK MAIN CA
2020-10-25 341-529-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FRNK MAIN CA
2020-10-21 341-529-7XXX 7000–7999Assigned METROPCS, INC. 5562 FRNK MAIN CA
2020-10-21 341-529-8XXX 8000–8999Assigned METROPCS, INC. 5562 FRNK MAIN CA
2020-10-21 341-600-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ELSBR-PINL CA
2020-10-21 341-600-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ELSBR-PINL 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.