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

Recent thousands-block assignments
Assigned	Thousands-block	Last 4 digits	Status	Assignee	OCN	Rate center	State
2005-01-07	512-506-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2005-01-07	512-669-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2005-01-07	512-669-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2005-01-07	512-669-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2005-01-03	512-595-1XXX	1000–1999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	TAYLOR	TX
2004-12-20	512-623-4XXX	4000–4999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-12-15	512-213-0XXX	0000–0999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	LOCKHART	TX
2004-12-15	512-727-0XXX	0000–0999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-12-15	512-727-1XXX	1000–1999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-12-15	512-727-2XXX	2000–2999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-12-15	512-727-3XXX	3000–3999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-12-15	512-727-4XXX	4000–4999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-12-15	512-727-5XXX	5000–5999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-12-15	512-727-6XXX	6000–6999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-12-15	512-727-7XXX	7000–7999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-12-15	512-727-8XXX	8000–8999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-12-15	512-727-9XXX	9000–9999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-12-14	512-312-4XXX	4000–4999	Assigned	TWC IP ENABLED SERVICES, LLC	793K	BUDA	TX
2004-12-14	512-642-3XXX	3000–3999	Assigned	TWC IP ENABLED SERVICES, LLC	793K	HUTTO	TX
2004-12-14	512-667-6XXX	6000–6999	Assigned	TWC IP ENABLED SERVICES, LLC	793K	SAN MARCOS	TX
2004-12-14	512-722-3XXX	3000–3999	Assigned	TWC IP ENABLED SERVICES, LLC	793K	WIMBERLEY	TX
2004-12-14	512-985-5XXX	5000–5999	Assigned	TWC IP ENABLED SERVICES, LLC	793K	BASTROP	TX
2004-12-13	512-538-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2004-12-13	512-538-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2004-12-13	512-538-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2004-12-13	512-538-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2004-12-10	512-524-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	AUSTIN	TX
2004-12-10	512-524-6XXX	6000–6999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	AUSTIN	TX
2004-12-10	512-524-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	AUSTIN	TX
2004-12-10	512-524-9XXX	9000–9999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	AUSTIN	TX
2004-11-23	512-506-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2004-11-23	512-586-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2004-11-23	512-586-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2004-11-23	512-586-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2004-11-18	512-402-5XXX	5000–5999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	AUSTIN	TX
2004-11-15	512-276-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	AUSTIN	TX
2004-11-11	512-664-0XXX	0000–0999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-11-11	512-664-1XXX	1000–1999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-11-11	512-664-2XXX	2000–2999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-11-11	512-664-3XXX	3000–3999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-11-11	512-664-4XXX	4000–4999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-11-11	512-664-5XXX	5000–5999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-11-11	512-664-6XXX	6000–6999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-11-11	512-664-7XXX	7000–7999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-11-11	512-664-8XXX	8000–8999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-11-11	512-664-9XXX	9000–9999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	AUSTIN	TX
2004-10-29	512-686-5XXX	5000–5999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	GEORGETOWN	TX
2004-10-27	512-667-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	SAN MARCOS	TX
2004-10-19	512-355-1XXX	1000–1999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	BERTRAM	TX
2004-10-15	512-523-3XXX	3000–3999	Assigned	LEVEL 3 OF TELECOM OF TEXAS, LLC - TX	7516	BUDA	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.