NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

15 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, 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
2020-07-02 341-200-2XXX 2000–2999Assigned FRACTEL, LLC 965H HRCUL-RODE CA
2020-07-02 341-200-3XXX 3000–3999Assigned FRACTEL, LLC 965H HRCUL-RODE CA
2020-06-30 341-222-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OKLD FRTVL CA
2020-06-30 341-222-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OKLD FRTVL CA
2020-06-30 341-222-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OKLD FRTVL CA
2020-06-29 341-336-0XXX 0000–0999Assigned METROPCS, INC. 5562 FRNK GRNLF CA
2020-06-29 341-799-7XXX 7000–7999Assigned METROPCS, INC. 5562 RICHMOND CA
2020-06-29 341-799-8XXX 8000–8999Assigned METROPCS, INC. 5562 RICHMOND CA
2020-06-22 341-666-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H OKLD TRNID CA
2020-06-22 341-666-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H OKLD TRNID CA
2020-06-22 341-666-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H OKLD TRNID CA
2020-05-28 341-226-4XXX 4000–4999Assigned FRACTEL, LLC 965H OKLD FRTVL CA
2020-05-28 341-226-5XXX 5000–5999Assigned FRACTEL, LLC 965H OKLD FRTVL CA
2020-05-28 341-336-8XXX 8000–8999Assigned FRACTEL, LLC 965H FRNK GRNLF CA
2020-05-28 341-356-7XXX 7000–7999Assigned FRACTEL, LLC 965H FRNK MAIN CA
2020-05-28 341-356-9XXX 9000–9999Assigned FRACTEL, LLC 965H FRNK MAIN CA
2020-05-28 341-766-3XXX 3000–3999Assigned FRACTEL, LLC 965H OKLD BKLY CA
2020-05-28 341-766-6XXX 6000–6999Assigned FRACTEL, LLC 965H OKLD BKLY CA
2020-05-27 341-799-9XXX 9000–9999Assigned FRACTEL, LLC 965H RICHMOND CA
2020-05-11 341-444-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CROCKETT CA
2020-04-30 341-222-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C OKLD FRTVL CA
2020-04-30 341-222-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C OKLD FRTVL CA
2020-04-30 341-999-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C RICHMOND CA
2020-04-21 341-999-0XXX 0000–0999Assigned AIRESPRING, INC. 996H RICHMOND CA
2020-03-03 341-333-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OKLD BKLY CA
2020-01-02 341-666-6XXX 6000–6999Assigned FRACTEL, LLC 965H OKLD TRNID CA
2020-01-02 341-666-7XXX 7000–7999Assigned FRACTEL, LLC 965H OKLD TRNID CA
2019-12-03 341-222-2XXX 2000–2999Assigned FRACTEL, LLC 965H OKLD FRTVL CA
2019-12-03 341-222-4XXX 4000–4999Assigned FRACTEL, LLC 965H OKLD FRTVL CA
2019-12-03 341-444-4XXX 4000–4999Assigned FRACTEL, LLC 965H CROCKETT CA
2019-12-03 341-444-7XXX 7000–7999Assigned FRACTEL, LLC 965H CROCKETT CA
2019-12-03 341-800-0XXX 0000–0999Assigned FRACTEL, LLC 965H HAYWARD CA
2019-12-03 341-800-8XXX 8000–8999Assigned FRACTEL, LLC 965H HAYWARD CA
2019-10-22 341-888-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C FRNK MAIN CA
2019-10-22 341-888-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C FRNK MAIN CA
2019-10-22 341-888-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C FRNK MAIN CA
2019-10-22 341-888-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C FRNK MAIN CA
2019-10-22 341-888-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C FRNK MAIN CA
2019-10-22 341-888-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C FRNK MAIN CA
2019-10-22 341-888-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C FRNK MAIN CA
2019-09-25 341-333-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OKLD BKLY CA
2019-09-17 341-777-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L HAYWARD CA
2019-09-09 341-333-0XXX 0000–0999Assigned SONIC TELECOM, LLC - CA 433E OKLD BKLY CA
2019-09-09 341-333-2XXX 2000–2999Assigned SONIC TELECOM, LLC - CA 433E OKLD BKLY CA
2019-09-06 341-777-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2019-09-03 341-333-1XXX 1000–1999Assigned SONIC TELECOM, LLC - CA 433E OKLD BKLY CA
2019-08-27 341-333-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OKLD BKLY CA
2019-08-27 341-333-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OKLD BKLY CA
2019-08-21 341-333-3XXX 3000–3999Assigned FRACTEL, LLC 965H OKLD BKLY CA
2019-08-21 341-333-4XXX 4000–4999Assigned FRACTEL, LLC 965H OKLD BKLY 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.