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
2016-09-15	573-444-5XXX	5000–5999	Assigned	ONVOY, LLC - MO	093F	FREDERCKTN	MO
2016-09-15	573-444-6XXX	6000–6999	Assigned	ONVOY, LLC - MO	093F	FREDERCKTN	MO
2016-09-15	573-502-0XXX	0000–0999	Assigned	ONVOY, LLC - MO	093F	GRAVOIS ML	MO
2016-09-15	573-502-2XXX	2000–2999	Assigned	ONVOY, LLC - MO	093F	GRAVOIS ML	MO
2016-09-15	573-542-1XXX	1000–1999	Assigned	ONVOY, LLC - MO	093F	CHARLESTON	MO
2016-09-15	573-550-2XXX	2000–2999	Assigned	ONVOY, LLC - MO	093F	FULTON	MO
2016-09-15	573-550-3XXX	3000–3999	Assigned	ONVOY, LLC - MO	093F	FULTON	MO
2016-09-15	573-653-4XXX	4000–4999	Assigned	ONVOY, LLC - MO	093F	DEERING	MO
2016-09-15	573-713-2XXX	2000–2999	Assigned	ONVOY, LLC - MO	093F	FARMINGTON	MO
2016-09-15	573-920-1XXX	1000–1999	Assigned	ONVOY, LLC - MO	093F	ELDON	MO
2016-09-15	573-920-2XXX	2000–2999	Assigned	ONVOY, LLC - MO	093F	ELDON	MO
2016-09-14	573-240-2XXX	2000–2999	Assigned	ONVOY, LLC - MO	093F	CENTER	MO
2016-09-14	573-240-3XXX	3000–3999	Assigned	ONVOY, LLC - MO	093F	CENTER	MO
2016-09-14	573-313-3XXX	3000–3999	Assigned	ONVOY, LLC - MO	093F	BENTON	MO
2016-09-14	573-313-4XXX	4000–4999	Assigned	ONVOY, LLC - MO	093F	BENTON	MO
2016-09-14	573-316-8XXX	8000–8999	Assigned	ONVOY, LLC - MO	093F	CARDWELL	MO
2016-09-14	573-324-0XXX	0000–0999	Assigned	ONVOY, LLC - MO	093F	BOWLNGGREN	MO
2016-09-14	573-381-5XXX	5000–5999	Assigned	ONVOY, LLC - MO	093F	CAPEGIRARD	MO
2016-09-14	573-381-6XXX	6000–6999	Assigned	ONVOY, LLC - MO	093F	CAPEGIRARD	MO
2016-09-14	573-410-7XXX	7000–7999	Assigned	ONVOY, LLC - MO	093F	CAMDENTON	MO
2016-09-14	573-410-8XXX	8000–8999	Assigned	ONVOY, LLC - MO	093F	CAMDENTON	MO
2016-09-14	573-484-8XXX	8000–8999	Assigned	ONVOY, LLC - MO	093F	BEAUFORT	MO
2016-09-14	573-500-2XXX	2000–2999	Assigned	ONVOY, LLC - MO	093F	CAMPBELL	MO
2016-09-14	573-534-1XXX	1000–1999	Assigned	ONVOY, LLC - MO	093F	BONNETERRE	MO
2016-09-14	573-534-3XXX	3000–3999	Assigned	ONVOY, LLC - MO	093F	BONNETERRE	MO
2016-09-14	573-702-0XXX	0000–0999	Assigned	ONVOY, LLC - MO	093F	BLOOMSDALE	MO
2016-09-14	573-702-1XXX	1000–1999	Assigned	ONVOY, LLC - MO	093F	BLOOMSDALE	MO
2016-09-14	573-733-0XXX	0000–0999	Assigned	ONVOY, LLC - MO	093F	BELL CITY	MO
2016-09-14	573-742-4XXX	4000–4999	Assigned	ONVOY, LLC - MO	093F	BOWLNGGREN	MO
2016-09-14	573-878-4XXX	4000–4999	Assigned	ONVOY, LLC - MO	093F	BEAUFORT	MO
2016-09-14	573-955-0XXX	0000–0999	Assigned	ONVOY, LLC - MO	093F	BISMARCK	MO
2016-09-14	573-955-1XXX	1000–1999	Assigned	ONVOY, LLC - MO	093F	BISMARCK	MO
2016-09-01	573-476-6XXX	6000–6999	Assigned	MCC TELEPHONY LLC	593K	COLUMBIA	MO
2016-08-26	573-488-0XXX	0000–0999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	ASHLAND	MO
2016-08-25	573-920-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - MO	993E	ELDON	MO
2016-08-11	573-987-5XXX	5000–5999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	JACKSON	MO
2016-08-10	573-360-5XXX	5000–5999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO	7432	E PRAIRIE	MO
2016-08-10	573-417-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO	7432	LINN	MO
2016-08-10	573-963-3XXX	3000–3999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO	7432	NEW MADRID	MO
2016-08-10	573-984-0XXX	0000–0999	Assigned	BANDWIDTH.COM CLEC, LLC - MO	993E	STEGNVIEVE	MO
2016-08-09	573-545-8XXX	8000–8999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO	7432	BENTON	MO
2016-08-09	573-610-9XXX	9000–9999	Assigned	WINDSTREAM MISSOURI, INC.	1885	IBERIA	MO
2016-08-09	573-742-3XXX	3000–3999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MO	7218	BOWLNGGREN	MO
2016-08-04	573-842-0XXX	0000–0999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WAYNESVL	MO
2016-08-03	573-501-6XXX	6000–6999	Assigned	ONVOY, LLC - MO	093F	HANNIBAL	MO
2016-08-02	573-501-2XXX	2000–2999	Assigned	UNITED STATES CELLULAR - MO	6275	HANNIBAL	MO
2016-08-01	573-375-2XXX	2000–2999	Assigned	TELEPORT COMMUNICATIONS AMERICA, LLC - MO	7218	ELDON	MO
2016-07-28	573-963-7XXX	7000–7999	Assigned	LEVEL 3 COMMUNICATIONS, LLC - MO	4932	NEW MADRID	MO
2016-07-27	573-375-4XXX	4000–4999	Assigned	ONVOY, LLC - MO	093F	ELDON	MO
2016-07-26	573-410-1XXX	1000–1999	Assigned	ONVOY, LLC - MO	093F	CAMDENTON	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.