NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

2 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 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
2007-02-21 915-219-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2007-02-21 915-219-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2007-02-21 915-219-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2007-02-13 915-667-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2007-02-13 915-667-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2007-01-22 915-238-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2007-01-22 915-238-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2007-01-10 915-261-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-12-28 915-765-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K FABENS TX
2006-12-19 915-356-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7263 EL PASO TX
2006-12-04 915-202-0XXX 0000–0999Assigned WESTEL, INC. - TX 7399 EL PASO TX
2006-11-21 915-667-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-11-21 915-667-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-11-21 915-667-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-11-21 915-667-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-11-21 915-667-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-11-21 915-667-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-11-21 915-667-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-11-07 915-238-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2006-10-18 915-540-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-10-18 915-540-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-10-18 915-540-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-10-18 915-540-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-10-11 915-540-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-10-09 915-780-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-09-22 915-603-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2006-09-22 915-603-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2006-09-14 915-545-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-09-14 915-603-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-09-06 915-541-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-08-30 915-543-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-08-29 915-356-1XXX 1000–1999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7263 EL PASO TX
2006-08-29 915-765-3XXX 3000–3999Assigned VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 FABENS TX
2006-08-16 915-487-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2006-08-02 915-440-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CLINT TX
2006-08-01 915-603-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EL PASO TX
2006-08-01 915-603-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EL PASO TX
2006-08-01 915-603-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EL PASO TX
2006-07-26 915-603-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-07-26 915-603-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-06-12 915-838-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2006-05-30 915-222-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 EL PASO TX
2006-05-24 915-691-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-05-24 915-691-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-05-24 915-691-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-05-24 915-691-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-05-24 915-691-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-05-24 915-691-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-05-24 915-691-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX
2006-05-24 915-691-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EL PASO TX

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.