NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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 209
ONVOY, 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
2016-06-17 209-420-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 STOCKTON CA
2016-06-17 209-561-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 STOCKTON CA
2016-06-17 209-561-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 STOCKTON CA
2016-06-17 209-713-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PINECREST CA
2016-06-15 209-302-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2016-06-09 209-718-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 MODESTO CA
2016-05-26 209-302-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MANTECA CA
2016-05-24 209-280-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LODI CA
2016-05-20 209-206-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TUOLUMNE CA
2016-05-19 209-702-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-05-19 209-702-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-05-19 209-702-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-05-17 209-237-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 TRACY CA
2016-05-17 209-278-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TRACY CA
2016-05-17 209-702-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 MODESTO CA
2016-05-17 209-802-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 NEWMAN CA
2016-05-11 209-490-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-05-11 209-696-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-05-11 209-715-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-05-11 209-715-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-05-10 209-427-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 TURLOCK CA
2016-05-09 209-440-4XXX 4000–4999Assigned HD CARRIER LLC 321J SNELLING CA
2016-05-09 209-440-5XXX 5000–5999Assigned HD CARRIER LLC 321J SNELLING CA
2016-05-09 209-440-6XXX 6000–6999Assigned HD CARRIER LLC 321J SNELLING CA
2016-05-09 209-440-8XXX 8000–8999Assigned HD CARRIER LLC 321J SNELLING CA
2016-05-09 209-440-9XXX 9000–9999Assigned HD CARRIER LLC 321J SNELLING CA
2016-05-09 209-563-3XXX 3000–3999Assigned HD CARRIER LLC 321J SNELLING CA
2016-05-06 209-457-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 IONE CA
2016-05-02 209-702-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MODESTO CA
2016-04-26 209-302-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MANTECA CA
2016-04-12 209-273-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E JACKSON CA
2016-04-12 209-362-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 TRACY CA
2016-04-11 209-715-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 STOCKTON CA
2016-04-07 209-702-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-04-07 209-702-8XXX 8000–8999Assigned METROPCS, INC. 5562 MODESTO CA
2016-04-07 209-702-9XXX 9000–9999Assigned METROPCS, INC. 5562 MODESTO CA
2016-04-01 209-281-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-04-01 209-281-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-03-31 209-838-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 ESCALON CA
2016-03-30 209-452-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LODI CA
2016-03-25 209-867-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7128 LOCKEFORD CA
2016-03-23 209-297-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C ANGELSCAMP CA
2016-03-23 209-297-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C ANGELSCAMP CA
2016-03-23 209-497-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C MODESTO CA
2016-03-23 209-497-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C MODESTO CA
2016-03-22 209-486-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-03-22 209-486-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-03-22 209-486-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MODESTO CA
2016-03-22 209-490-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA
2016-03-22 209-490-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 STOCKTON CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.