Recent thousands-block assignments

11 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 573

INTRADO COMMUNICATIONS, LLC 4

ONVOY, LLC - MO 2

BANDWIDTH.COM CLEC, LLC - MO 2

EXIANT COMMUNICATIONS LLC 1

E. RITTER 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
2004-12-30	573-240-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	CENTER	MO
2004-12-30	573-250-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	CLARKSVL	MO
2004-12-30	573-260-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	CLIMAX SPG	MO
2004-12-30	573-300-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	POPLAR BLF	MO
2004-12-30	573-312-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	ELSBERRY	MO
2004-12-30	573-314-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	FRANKFORD	MO
2004-12-30	573-319-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	MACKSCREEK	MO
2004-12-30	573-321-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	ADVANCE	MO
2004-12-30	573-342-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	RICHWOODS	MO
2004-12-30	573-343-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	PUXICO	MO
2004-12-30	573-349-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	PATTON	MO
2004-12-30	573-352-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	POCAHONTAS	MO
2004-12-30	573-552-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	LKOZKOSBCH	MO
2004-12-30	573-586-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	FTLENARDWD	MO
2004-12-30	573-724-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	HAYTI	MO
2004-12-30	573-826-4XXX	4000–4999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	FULTON	MO
2004-12-01	573-768-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	PERRYVILLE	MO
2004-11-17	573-234-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	COLUMBIA	MO
2004-11-17	573-518-9XXX	9000–9999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	FLAT RIVER	MO
2004-11-17	573-535-6XXX	6000–6999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	STEGNVIEVE	MO
2004-11-12	573-823-0XXX	0000–0999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	COLUMBIA	MO
2004-11-12	573-823-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	COLUMBIA	MO
2004-11-02	573-433-0XXX	0000–0999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WAYNESVL	MO
2004-11-02	573-433-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WAYNESVL	MO
2004-10-18	573-586-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	FTLENARDWD	MO
2004-10-08	573-301-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	JEFFERSNCY	MO
2004-10-08	573-301-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	JEFFERSNCY	MO
2004-10-08	573-301-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	JEFFERSNCY	MO
2004-10-08	573-301-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	JEFFERSNCY	MO
2004-09-27	573-201-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ROLLA	MO
2004-09-27	573-201-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ROLLA	MO
2004-09-27	573-201-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ROLLA	MO
2004-09-27	573-366-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FARMINGTON	MO
2004-09-27	573-366-6XXX	6000–6999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FARMINGTON	MO
2004-09-27	573-366-7XXX	7000–7999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FARMINGTON	MO
2004-09-27	573-366-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FARMINGTON	MO
2004-09-27	573-366-9XXX	9000–9999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FARMINGTON	MO
2004-09-16	573-213-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	BOWLNGGREN	MO
2004-09-16	573-560-8XXX	8000–8999	Assigned	METROPCS, INC.	5562	LOUISIANA	MO
2004-08-30	573-452-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	FTLENARDWD	MO
2004-08-27	573-982-9XXX	9000–9999	Assigned	METROPCS, INC.	5562	CENTRALIA	MO
2004-08-25	573-657-3XXX	3000–3999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	ASHLAND	MO
2004-08-25	573-696-6XXX	6000–6999	Assigned	BRIGHTSPEED OF MISSOURI, LLC	9784	HALLSVILLE	MO
2004-08-24	573-644-7XXX	7000–7999	Assigned	ONVOY, LLC - MO	093F	JEFFERSNCY	MO
2004-08-23	573-317-8XXX	8000–8999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MO	7218	CAMDENTON	MO
2004-08-10	573-318-5XXX	5000–5999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHAFFEE	MO
2004-08-09	573-213-7XXX	7000–7999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MO	7218	BOWLNGGREN	MO
2004-08-06	573-560-5XXX	5000–5999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	LOUISIANA	MO
2004-06-24	573-200-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	CAPEGIRARD	MO
2004-06-22	573-201-1XXX	1000–1999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ROLLA	MO

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.