NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 512
HD CARRIER LLC 2
INTRADO COMMUNICATIONS, LLC 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
2014-03-14 512-429-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ROCKDALE TX
2014-03-14 512-489-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BRIGGS TX
2014-03-14 512-575-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SMITHVILLE TX
2014-03-14 512-598-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JARRELL TX
2014-03-14 512-842-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WIMBERLEY TX
2014-03-14 512-859-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRANGER TX
2014-03-14 512-980-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MCDADE TX
2014-03-12 512-212-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MARTINDALE TX
2014-03-12 512-256-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J KYLE TX
2014-03-12 512-488-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FENTRESS TX
2014-03-12 512-515-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LIBERTY HL TX
2014-03-12 512-598-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TX 004F JARRELL TX
2014-03-12 512-620-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J LOCKHART TX
2014-03-12 512-641-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J ADAMSVILLE TX
2014-03-12 512-793-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BUCHANNDAM TX
2014-03-12 512-856-8XXX 8000–8999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COUPLAND TX
2014-03-05 512-819-1XXX 1000–1999Assigned CSC VOICE, LLC 612K GEORGETOWN TX
2014-03-05 512-819-6XXX 6000–6999Assigned CSC VOICE, LLC 612K GEORGETOWN TX
2014-02-28 512-960-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2014-02-24 512-717-2XXX 2000–2999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-02-24 512-853-1XXX 1000–1999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-02-24 512-982-8XXX 8000–8999Assigned METROPCS, INC. 5562 AUSTIN TX
2014-02-11 512-676-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-02-11 512-676-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-02-11 512-676-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-02-11 512-676-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-02-11 512-676-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2014-02-03 512-598-3XXX 3000–3999Assigned CSC VOICE, LLC 612K JARRELL TX
2014-02-03 512-969-3XXX 3000–3999Assigned CSC VOICE, LLC 612K AUSTIN TX
2014-02-03 512-969-4XXX 4000–4999Assigned CSC VOICE, LLC 612K AUSTIN TX
2014-02-03 512-969-5XXX 5000–5999Assigned CSC VOICE, LLC 612K AUSTIN TX
2014-01-29 512-528-4XXX 4000–4999Assigned CSC VOICE, LLC 612K LEANDER TX
2014-01-29 512-846-0XXX 0000–0999Assigned CSC VOICE, LLC 612K HUTTO TX
2014-01-28 512-309-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 TAYLOR TX
2014-01-13 512-676-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 AUSTIN TX
2014-01-08 512-545-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2014-01-08 512-545-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2014-01-08 512-545-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2014-01-08 512-545-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BASTROP TX
2014-01-07 512-986-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LEANDER TX
2014-01-07 512-986-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LEANDER TX
2013-12-09 512-676-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 AUSTIN TX
2013-12-06 512-400-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BUDA TX
2013-12-06 512-400-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BUDA TX
2013-12-03 512-932-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KEMPNER TX
2013-11-22 512-676-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2013-11-22 512-676-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 AUSTIN TX
2013-11-21 512-781-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAN MARCOS TX
2013-11-21 512-982-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2013-11-21 512-982-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN 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.