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
2022-07-08 341-342-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C FRNK OLIVR CA
2022-07-08 341-342-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C FRNK OLIVR CA
2022-07-08 341-342-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C FRNK OLIVR CA
2022-07-05 341-215-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RICHMOND CA
2022-07-05 341-216-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN CA
2022-07-05 341-216-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN CA
2022-07-05 341-388-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RICHMOND CA
2022-07-05 341-786-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN CA
2022-07-05 341-786-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN CA
2022-07-05 341-786-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN CA
2022-06-30 341-209-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FRNK OLIVR CA
2022-06-30 341-786-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FRNK MAIN CA
2022-06-30 341-786-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FRNK MAIN CA
2022-06-30 341-786-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 FRNK MAIN CA
2022-06-28 341-420-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L OKLD FRTVL CA
2022-06-28 341-420-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L OKLD FRTVL CA
2022-06-28 341-420-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L OKLD FRTVL CA
2022-06-22 341-441-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OKLD MN-PD CA
2022-06-15 341-204-8XXX 8000–8999Assigned TELNYX LLC 073H FRNK GRNLF CA
2022-06-09 341-213-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OKLD MN-PD CA
2022-06-09 341-213-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OKLD MN-PD CA
2022-06-09 341-213-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OKLD MN-PD CA
2022-06-09 341-213-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OKLD MN-PD CA
2022-06-03 341-219-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J OKLD BKLY CA
2022-06-03 341-219-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J OKLD BKLY CA
2022-05-27 341-214-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C HRCUL-RODE CA
2022-05-27 341-214-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C HRCUL-RODE CA
2022-05-13 341-221-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2022-05-11 341-214-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HRCUL-RODE CA
2022-05-11 341-786-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F FRNK MAIN CA
2022-05-03 341-215-5XXX 5000–5999Assigned SONIC TELECOM, LLC - CA 433E RICHMOND CA
2022-04-20 341-837-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELSBR-PINL CA
2022-04-19 341-214-0XXX 0000–0999Assigned TELNYX LLC 073H HRCUL-RODE CA
2022-04-13 341-213-0XXX 0000–0999Assigned COMMIO, LLC 939H OKLD MN-PD CA
2022-04-13 341-216-3XXX 3000–3999Assigned COMMIO, LLC 939H FRNK MAIN CA
2022-04-12 341-214-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HRCUL-RODE CA
2022-04-11 341-210-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OKLD ALMD CA
2022-04-05 341-221-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2022-04-05 341-221-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2022-03-18 341-688-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OKLD BKLY CA
2022-03-18 341-688-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OKLD BKLY CA
2022-03-18 341-688-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OKLD BKLY CA
2022-03-18 341-688-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OKLD BKLY CA
2022-03-07 341-441-1XXX 1000–1999Assigned TON80 COMMUNICATIONS, LLC 516J OKLD MN-PD CA
2022-03-04 341-215-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RICHMOND CA
2022-03-04 341-215-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RICHMOND CA
2022-03-04 341-215-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F RICHMOND CA
2022-03-04 341-216-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN CA
2022-03-04 341-216-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN CA
2022-03-04 341-216-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN 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.