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 415
BOOST SUBSCRIBERCO L.L.C. 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
2012-12-04 415-696-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2012-12-04 415-787-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C POINTREYES CA
2012-12-04 415-868-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C STNSN-BLNS CA
2012-12-04 415-997-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C NICASIO CA
2012-12-03 415-757-6XXX 6000–6999Assigned SONIC TELECOM, LLC - CA 433E SNFC CNTRL CA
2012-12-03 415-859-7XXX 7000–7999Assigned SONIC TELECOM, LLC - CA 433E SNFC JUNPR CA
2012-11-29 415-231-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNFC MT-EV CA
2012-11-28 415-419-2XXX 2000–2999Assigned SONIC TELECOM, LLC - CA 433E SAN RAFAEL CA
2012-11-28 415-465-7XXX 7000–7999Assigned SONIC TELECOM, LLC - CA 433E SAUSALITO CA
2012-11-28 415-569-5XXX 5000–5999Assigned SONIC TELECOM, LLC - CA 433E MILLVALLEY CA
2012-11-28 415-737-8XXX 8000–8999Assigned SONIC TELECOM, LLC - CA 433E CORTEMADRA CA
2012-11-28 415-763-3XXX 3000–3999Assigned SONIC TELECOM, LLC - CA 433E IGNACIO CA
2012-11-27 415-481-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SNFC JUNPR CA
2012-11-27 415-589-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2012-11-26 415-757-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFC CNTRL CA
2012-11-15 415-757-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNFC CNTRL CA
2012-11-15 415-757-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNFC CNTRL CA
2012-11-13 415-569-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MILLVALLEY CA
2012-11-13 415-569-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MILLVALLEY CA
2012-11-13 415-741-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC MT-EV CA
2012-11-13 415-757-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J SNFC CNTRL CA
2012-11-09 415-654-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2012-11-09 415-654-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2012-11-09 415-654-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2012-11-09 415-654-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2012-11-09 415-654-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC CNTRL CA
2012-11-07 415-349-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC JUNPR CA
2012-11-07 415-526-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN RAFAEL CA
2012-11-07 415-654-5XXX 5000–5999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNFC CNTRL CA
2012-11-07 415-715-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC JUNPR CA
2012-11-06 415-757-1XXX 1000–1999Assigned NUSO, LLC 551G SNFC CNTRL CA
2012-10-30 415-465-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAUSALITO CA
2012-10-30 415-465-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAUSALITO CA
2012-10-29 415-539-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFC CNTRL CA
2012-10-29 415-539-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFC CNTRL CA
2012-10-25 415-524-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN RAFAEL CA
2012-10-19 415-524-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN RAFAEL CA
2012-10-19 415-539-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNFC CNTRL CA
2012-10-18 415-988-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNFC JUNPR CA
2012-10-15 415-755-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN RAFAEL CA
2012-10-12 415-306-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SAN RAFAEL CA
2012-10-10 415-539-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SNFC CNTRL CA
2012-10-10 415-539-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SNFC CNTRL CA
2012-10-09 415-654-6XXX 6000–6999Assigned METROPCS, INC. 5562 SNFC CNTRL CA
2012-10-09 415-654-7XXX 7000–7999Assigned METROPCS, INC. 5562 SNFC CNTRL CA
2012-10-09 415-654-8XXX 8000–8999Assigned METROPCS, INC. 5562 SNFC CNTRL CA
2012-10-09 415-654-9XXX 9000–9999Assigned METROPCS, INC. 5562 SNFC CNTRL CA
2012-10-04 415-539-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC CNTRL CA
2012-10-04 415-539-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC CNTRL CA
2012-10-04 415-539-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC CNTRL 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.