NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 713
AERIAL COMMUNICATIONS, INC. 409
ONVOY, LLC - TX 242
NEW CINGULAR WIRELESS PCS, LLC - IL 199
LEVEL 3 COMMUNICATIONS, LLC - TX 117
SOUTHWESTERN BELL 102
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
2021-03-17 713-564-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C SEABROOK TX
2021-03-17 713-564-6XXX 6000–6999Assigned ONVOY, LLC - TX 903C SEABROOK TX
2021-03-01 713-930-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2021-03-01 713-930-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2021-03-01 713-930-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2021-03-01 713-930-3XXX 3000–3999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2021-03-01 713-930-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2021-02-12 713-565-0XXX 0000–0999Assigned TELNYX LLC 073H HUFFMAN TX
2021-01-04 713-564-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C SEABROOK TX
2021-01-04 713-564-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C SEABROOK TX
2021-01-04 713-565-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C HUFFMAN TX
2021-01-04 713-565-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C HUFFMAN TX
2020-12-18 713-352-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C APOLLO TX
2020-12-08 713-930-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2020-11-11 713-366-4XXX 4000–4999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2020-11-11 713-429-0XXX 0000–0999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2020-11-11 713-528-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2020-11-11 713-731-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C HOUSTON TX
2020-11-03 713-999-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C HUFFMAN TX
2020-10-26 713-902-7XXX 7000–7999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2020-10-26 713-902-8XXX 8000–8999Assigned METROPCS, INC. 5562 SUGAR LAND TX
2020-10-26 713-913-8XXX 8000–8999Assigned METROPCS, INC. 5562 BARKER TX
2020-10-26 713-913-9XXX 9000–9999Assigned METROPCS, INC. 5562 BARKER TX
2020-10-22 713-589-0XXX 0000–0999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2020-10-22 713-913-7XXX 7000–7999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F BARKER TX
2020-10-14 713-613-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2020-10-14 713-684-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2020-10-14 713-788-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2020-10-14 713-788-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2020-10-14 713-788-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2020-10-14 713-788-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2020-10-14 713-788-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2020-10-14 713-863-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2020-10-14 713-863-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2020-10-02 713-902-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SUGAR LAND TX
2020-10-02 713-902-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SUGAR LAND TX
2020-10-01 713-913-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2020-10-01 713-913-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2020-10-01 713-913-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2020-10-01 713-913-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2020-10-01 713-913-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F BARKER TX
2020-09-24 713-431-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HOUSTON TX
2020-09-08 713-684-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2020-09-08 713-684-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2020-09-08 713-684-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2020-09-08 713-684-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HOUSTON TX
2020-08-26 713-257-2XXX 2000–2999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2020-08-26 713-257-4XXX 4000–4999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2020-08-26 713-264-5XXX 5000–5999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2020-08-26 713-264-9XXX 9000–9999Assigned AERIAL COMMUNICATIONS, INC. 6701 HOUSTON 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.