NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 972
NEW CINGULAR WIRELESS PCS, LLC - IL 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
2013-09-03 972-597-7XXX 7000–7999Assigned ONVOY, LLC - TX 903C ITALY TX
2013-09-03 972-853-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C NEVADA TX
2013-08-28 972-457-4XXX 4000–4999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2013-08-08 972-515-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RED OAK TX
2013-07-24 972-382-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CELINA TX
2013-07-03 972-954-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ALLEN TX
2013-06-28 972-810-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F CARROLLTON TX
2013-06-11 972-457-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 IRVING TX
2013-06-11 972-457-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 IRVING TX
2013-06-11 972-457-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 IRVING TX
2013-06-11 972-457-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 IRVING TX
2013-06-05 972-346-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PROSPER TX
2013-04-24 972-598-9XXX 9000–9999Assigned ONVOY, LLC - TX 903C DALLAS TX
2013-04-16 972-598-8XXX 8000–8999Assigned SOUTHWESTERN BELL 9533 DALLAS TX
2013-04-03 972-576-7XXX 7000–7999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F RED OAK TX
2013-04-03 972-576-9XXX 9000–9999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F RED OAK TX
2013-04-03 972-597-0XXX 0000–0999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F ITALY TX
2013-04-03 972-597-1XXX 1000–1999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F ITALY TX
2013-04-02 972-370-3XXX 3000–3999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F FRISCO TX
2013-04-02 972-370-5XXX 5000–5999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F FRISCO TX
2013-04-02 972-426-7XXX 7000–7999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F DLFTWTARPT TX
2013-04-02 972-426-8XXX 8000–8999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F DLFTWTARPT TX
2013-04-01 972-848-5XXX 5000–5999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F WILMER TX
2013-04-01 972-848-6XXX 6000–6999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F WILMER TX
2013-03-29 972-635-0XXX 0000–0999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F ROYSE CITY TX
2013-03-29 972-636-4XXX 4000–4999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F ROYSE CITY TX
2013-03-29 972-736-8XXX 8000–8999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F PRINCETON TX
2013-03-29 972-736-9XXX 9000–9999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F PRINCETON TX
2013-03-29 972-843-9XXX 9000–9999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F NEVADA TX
2013-03-29 972-853-9XXX 9000–9999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F NEVADA TX
2013-03-28 972-427-1XXX 1000–1999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F CRANDALL TX
2013-03-28 972-525-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F WILMER TX
2013-03-28 972-694-0XXX 0000–0999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F JOSEPHINE TX
2013-03-28 972-694-1XXX 1000–1999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F JOSEPHINE TX
2013-03-28 972-833-0XXX 0000–0999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F FERRIS TX
2013-03-25 972-666-8XXX 8000–8999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F BRISTOL TX
2013-03-25 972-846-0XXX 0000–0999Assigned PEERLESS NETWORK OF TEXAS, LLC - TX 177F BRISTOL TX
2013-03-12 972-347-8XXX 8000–8999Assigned ONVOY, LLC - TX 903C PROSPER TX
2013-03-12 972-598-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 DALLAS TX
2013-02-22 972-598-2XXX 2000–2999Assigned METROPCS, INC. 5562 DALLAS TX
2013-02-22 972-598-3XXX 3000–3999Assigned METROPCS, INC. 5562 DALLAS TX
2013-02-22 972-598-4XXX 4000–4999Assigned METROPCS, INC. 5562 DALLAS TX
2013-02-22 972-598-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 DALLAS TX
2013-02-22 972-598-7XXX 7000–7999Assigned METROPCS, INC. 5562 DALLAS TX
2013-02-07 972-861-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2013-02-07 972-885-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2013-02-07 972-885-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2013-02-07 972-885-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2013-02-07 972-885-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F DALLAS TX
2013-02-01 972-348-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J DALLAS 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.