NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 915
PEERLESS NETWORK OF TEXAS, LLC - TX 1
8X8, INC. 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
2009-06-09 915-538-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2009-04-21 915-226-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-226-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-226-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-226-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-226-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-226-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-226-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-226-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-226-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-401-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-401-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-401-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-843-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-843-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-843-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-843-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-843-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-843-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-21 915-843-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-04-08 915-538-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2009-03-05 915-540-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2009-02-04 915-319-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-02-04 915-319-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-02-04 915-502-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-02-04 915-502-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-02-04 915-502-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-02-04 915-502-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-02-04 915-502-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-02-04 915-502-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-02-04 915-502-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-02-04 915-502-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-02-04 915-502-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2009-01-15 915-321-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CANUTILLO TX
2008-12-31 915-317-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2008-12-16 915-226-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C EL PASO TX
2008-11-24 915-235-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F EL PASO TX
2008-11-10 915-765-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FABENS TX
2008-10-28 915-401-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EL PASO TX
2008-10-28 915-504-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2008-10-28 915-504-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2008-10-09 915-504-6XXX 6000–6999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7263 EL PASO TX
2008-10-09 915-504-7XXX 7000–7999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7263 EL PASO TX
2008-09-29 915-319-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2008-09-29 915-319-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2008-09-23 915-503-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2008-09-23 915-503-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2008-09-23 915-503-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2008-08-19 915-503-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2008-07-30 915-503-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX

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.