NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

4 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 510
ONVOY, LLC - CA 3
BANDWIDTH.COM CLEC, 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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2020-05-18 510-445-9XXX 9000–9999Assigned VONAGE AMERICA LLC 197D FRNK OLIVR CA
2020-05-18 510-961-5XXX 5000–5999Assigned VONAGE AMERICA LLC 197D FRNK GRNLF CA
2020-05-18 510-989-3XXX 3000–3999Assigned VONAGE AMERICA LLC 197D OKLD BKLY CA
2020-05-18 510-989-4XXX 4000–4999Assigned VONAGE AMERICA LLC 197D OKLD BKLY CA
2020-05-15 510-630-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ELSBR-PINL CA
2020-05-15 510-630-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ELSBR-PINL CA
2020-05-15 510-767-3XXX 3000–3999Assigned VONAGE AMERICA LLC 197D FRNK MAIN CA
2020-05-15 510-767-4XXX 4000–4999Assigned VONAGE AMERICA LLC 197D FRNK MAIN CA
2020-04-21 510-880-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2020-04-20 510-880-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2020-04-17 510-264-2XXX 2000–2999Assigned AIRESPRING, INC. 996H HAYWARD CA
2020-04-15 510-346-6XXX 6000–6999Assigned METROPCS, INC. 5562 OKLD TRNID CA
2020-04-15 510-767-2XXX 2000–2999Assigned METROPCS, INC. 5562 FRNK MAIN CA
2020-04-15 510-961-9XXX 9000–9999Assigned METROPCS, INC. 5562 FRNK GRNLF CA
2020-04-15 510-975-2XXX 2000–2999Assigned METROPCS, INC. 5562 OKLD ALMD CA
2020-04-10 510-216-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OKLD FRTVL CA
2020-04-10 510-216-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OKLD FRTVL CA
2020-04-10 510-216-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OKLD FRTVL CA
2020-04-10 510-216-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OKLD FRTVL CA
2020-04-10 510-216-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OKLD FRTVL CA
2020-03-03 510-272-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OKLD MN-PD CA
2020-03-03 510-955-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OKLD TRNID CA
2020-02-12 510-767-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN CA
2020-02-12 510-767-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN CA
2020-02-12 510-767-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN CA
2020-02-12 510-767-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 FRNK MAIN CA
2020-02-03 510-630-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2020-01-15 510-732-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2020-01-15 510-781-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C HAYWARD CA
2020-01-08 510-994-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 RICHMOND CA
2020-01-08 510-994-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 RICHMOND CA
2019-12-18 510-347-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OKLD TRNID CA
2019-12-18 510-767-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F FRNK MAIN CA
2019-12-18 510-767-1XXX 1000–1999Assigned METROPCS, INC. 5562 FRNK MAIN CA
2019-12-18 510-961-8XXX 8000–8999Assigned METROPCS, INC. 5562 FRNK GRNLF CA
2019-12-02 510-216-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OKLD FRTVL CA
2019-12-02 510-272-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OKLD MN-PD CA
2019-12-02 510-975-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OKLD ALMD CA
2019-11-22 510-781-2XXX 2000–2999Assigned VONAGE AMERICA LLC 197D HAYWARD CA
2019-11-08 510-767-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FRNK MAIN CA
2019-10-31 510-216-0XXX 0000–0999Assigned TELNYX LLC 073H OKLD FRTVL CA
2019-10-23 510-617-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HRCUL-RODE CA
2019-10-23 510-617-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HRCUL-RODE CA
2019-10-23 510-630-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELSBR-PINL CA
2019-10-17 510-630-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2019-10-14 510-262-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2019-10-10 510-994-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RICHMOND CA
2019-10-10 510-994-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RICHMOND CA
2019-09-27 510-216-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OKLD FRTVL CA
2019-09-25 510-434-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OKLD FRTVL 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.