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
2011-06-30	573-210-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	POTOSI	MO
2011-06-29	573-723-5XXX	5000–5999	Assigned	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO	7432	LKOZKOSBCH	MO
2011-06-27	573-434-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	LKOZKOSBCH	MO
2011-06-21	573-228-6XXX	6000–6999	Assigned	MCC TELEPHONY LLC	593K	COLUMBIA	MO
2011-06-16	573-721-8XXX	8000–8999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MEXICO	MO
2011-05-20	573-788-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	OLDAPPLETN	MO
2011-05-17	573-953-2XXX	2000–2999	Assigned	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BIRCH TREE	MO
2011-05-09	573-803-2XXX	2000–2999	Assigned	CHARTER IP ENABLED SERVICES, LLC	792K	CAPEGIRARD	MO
2011-05-03	573-397-2XXX	2000–2999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	COLUMBIA	MO
2011-05-03	573-397-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	COLUMBIA	MO
2011-05-03	573-469-3XXX	3000–3999	Assigned	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO	5814	JEFFERSNCY	MO
2011-05-02	573-340-8XXX	8000–8999	Assigned	BANDWIDTH.COM CLEC, LLC - MO	993E	WELLSVILLE	MO
2011-04-29	573-534-7XXX	7000–7999	Assigned	AT&T ENTERPRISES, LLC	516C	BONNETERRE	MO
2011-04-28	573-484-2XXX	2000–2999	Assigned	AT&T ENTERPRISES, LLC	516C	BEAUFORT	MO
2011-04-21	573-213-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	BOWLNGGREN	MO
2011-04-21	573-240-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	CENTER	MO
2011-04-21	573-250-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	CLARKSVL	MO
2011-04-21	573-260-9XXX	9000–9999	Assigned	AT&T ENTERPRISES, LLC	516C	CLIMAX SPG	MO
2011-04-21	573-266-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	OAK RIDGE	MO
2011-04-21	573-283-2XXX	2000–2999	Assigned	AT&T ENTERPRISES, LLC	516C	ESSEX	MO
2011-04-21	573-290-0XXX	0000–0999	Assigned	AT&T ENTERPRISES, LLC	516C	CAPEGIRARD	MO
2011-04-21	573-309-1XXX	1000–1999	Assigned	AT&T ENTERPRISES, LLC	516C	BELL CITY	MO
2011-04-21	573-312-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	ELSBERRY	MO
2011-04-21	573-327-4XXX	4000–4999	Assigned	AT&T ENTERPRISES, LLC	516C	FLAT RIVER	MO
2011-04-21	573-328-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	QULIN	MO
2011-04-21	573-343-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	PUXICO	MO
2011-04-21	573-362-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	FISK	MO
2011-04-21	573-363-8XXX	8000–8999	Assigned	AT&T ENTERPRISES, LLC	516C	MACKSCREEK	MO
2011-04-21	573-369-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	TUSCUMBIA	MO
2011-04-21	573-371-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	HOLCOMB	MO
2011-04-21	573-394-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	RISCO	MO
2011-04-21	573-479-3XXX	3000–3999	Assigned	AT&T ENTERPRISES, LLC	516C	HAYTI	MO
2011-04-21	573-483-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	BLOOMSDALE	MO
2011-04-21	573-543-6XXX	6000–6999	Assigned	AT&T ENTERPRISES, LLC	516C	ST MARYS	MO
2011-04-21	573-545-2XXX	2000–2999	Assigned	AT&T ENTERPRISES, LLC	516C	BENTON	MO
2011-04-21	573-560-4XXX	4000–4999	Assigned	AT&T ENTERPRISES, LLC	516C	LOUISIANA	MO
2011-04-21	573-562-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	LEADWOOD	MO
2011-04-21	573-567-9XXX	9000–9999	Assigned	AT&T ENTERPRISES, LLC	516C	MEXICO	MO
2011-04-21	573-608-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	STEGNVIEVE	MO
2011-04-21	573-628-2XXX	2000–2999	Assigned	AT&T ENTERPRISES, LLC	516C	WARDELL	MO
2011-04-21	573-665-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	PAYNESVL	MO
2011-04-21	573-667-4XXX	4000–4999	Assigned	AT&T ENTERPRISES, LLC	516C	MOREHOUSE	MO
2011-04-21	573-675-2XXX	2000–2999	Assigned	AT&T ENTERPRISES, LLC	516C	WYATT	MO
2011-04-21	573-678-6XXX	6000–6999	Assigned	AT&T ENTERPRISES, LLC	516C	RICHWOODS	MO
2011-04-21	573-719-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	HANNIBAL	MO
2011-04-21	573-737-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	HORNERSVL	MO
2011-04-21	573-752-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	DEERING	MO
2011-04-21	573-784-3XXX	3000–3999	Assigned	AT&T ENTERPRISES, LLC	516C	FRANKFORD	MO
2011-04-21	573-794-5XXX	5000–5999	Assigned	AT&T ENTERPRISES, LLC	516C	DELTA	MO
2011-04-21	573-824-3XXX	3000–3999	Assigned	AT&T ENTERPRISES, LLC	516C	ALTEBGFRHN	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.