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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2007-06-19 512-780-7XXX 7000–7999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 AUSTIN TX
2007-06-19 512-780-8XXX 8000–8999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 AUSTIN TX
2007-06-19 512-780-9XXX 9000–9999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 AUSTIN TX
2007-06-15 512-529-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-06-15 512-529-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-06-15 512-529-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-06-15 512-529-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-06-15 512-529-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-06-15 512-897-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-06-15 512-897-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-06-15 512-897-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-06-15 512-897-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-06-15 512-897-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-06-14 512-229-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J ELGIN TX
2007-06-14 512-337-0XXX 0000–0999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LEANDER TX
2007-06-07 512-234-5XXX 5000–5999Assigned ONVOY, LLC - TX 903C BURNET TX
2007-05-31 512-240-5XXX 5000–5999Assigned CSC VOICE, LLC 612K GEORGETOWN TX
2007-05-29 512-243-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2007-05-29 512-243-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2007-05-29 512-243-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2007-05-29 512-284-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2007-05-29 512-284-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2007-05-29 512-284-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2007-05-29 512-992-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2007-05-29 512-992-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2007-05-29 512-992-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2007-05-24 512-216-2XXX 2000–2999Assigned ONVOY, LLC - TX 903C SAN MARCOS TX
2007-05-24 512-897-1XXX 1000–1999Assigned ONVOY, LLC - TX 903C AUSTIN TX
2007-05-18 512-529-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2007-05-14 512-553-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BURNET TX
2007-05-09 512-629-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BASTROP TX
2007-05-03 512-938-1XXX 1000–1999Assigned GRANDE COMMUNICATIONS NETWORKS, INC. - TX 7670 SAN MARCOS TX
2007-04-30 512-992-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-04-30 512-992-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-04-30 512-992-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-04-30 512-992-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2007-04-27 512-529-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2007-04-20 512-629-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 7249 BASTROP TX
2007-04-19 512-961-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2007-04-19 512-961-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2007-04-19 512-961-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2007-04-19 512-961-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 AUSTIN TX
2007-04-17 512-216-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAN MARCOS TX
2007-04-13 512-749-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SAN MARCOS TX
2007-04-13 512-749-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SAN MARCOS TX
2007-04-09 512-897-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUSTIN TX
2007-04-05 512-919-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K AUSTIN TX
2007-04-04 512-529-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 AUSTIN TX
2007-03-27 512-216-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SAN MARCOS TX
2007-03-26 512-852-1XXX 1000–1999Assigned CSC VOICE, LLC 612K 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.