Recent thousands-block assignments

68 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

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

T-MOBILE USA, INC. 68

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
2017-08-07	323-818-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	LSAN DA 03	CA
2017-08-07	406-402-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	GREATFALLS	MT
2017-08-07	510-570-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	OKLD BKLY	CA
2017-08-07	626-268-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	ARCADIA	CA
2017-08-07	636-638-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	FSSCRSTLCY	MO
2017-08-07	636-706-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	ST PETERS	MO
2017-08-07	636-706-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	ST PETERS	MO
2017-08-07	636-706-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	ST PETERS	MO
2017-08-07	650-309-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	HALFMOONBY	CA
2017-08-07	650-309-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	HALFMOONBY	CA
2017-08-07	657-358-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	SANTA ANA	CA
2017-08-07	657-358-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	SANTA ANA	CA
2017-08-07	657-720-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	SANTA ANA	CA
2017-08-07	657-720-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	SANTA ANA	CA
2017-08-07	657-720-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	SANTA ANA	CA
2017-08-03	562-732-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	LAKEWOOD	CA
2017-08-03	562-732-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	LAKEWOOD	CA
2017-08-03	870-617-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	ARKADLPHIA	AR
2017-08-03	870-617-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	ARKADLPHIA	AR
2017-08-02	406-561-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	BILLINGS	MT
2017-08-01	501-477-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	MORRILTON	AR
2017-08-01	501-477-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	MORRILTON	AR
2017-07-28	539-286-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	OKMULGEE	OK
2017-07-28	626-366-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	ALHAMBRA	CA
2017-07-28	626-366-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	ALHAMBRA	CA
2017-07-28	626-366-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	ALHAMBRA	CA
2017-07-28	626-366-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	ALHAMBRA	CA
2017-07-28	626-366-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	ALHAMBRA	CA
2017-07-28	626-366-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	ALHAMBRA	CA
2017-07-28	918-325-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	MIAMI	OK
2017-07-27	626-464-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	ALHAMBRA	CA
2017-07-27	626-492-9XXX	9000–9999	Assigned	T-MOBILE USA, INC.	6529	ALHAMBRA	CA
2017-07-27	626-615-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	ALHAMBRA	CA
2017-07-27	626-615-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	ALHAMBRA	CA
2017-07-26	217-719-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	JACKSONVL	IL
2017-07-24	312-538-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2017-07-24	312-538-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2017-07-24	312-538-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2017-07-24	312-538-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2017-07-24	312-538-4XXX	4000–4999	Assigned	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2017-07-24	312-538-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2017-07-24	312-538-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2017-07-24	312-538-7XXX	7000–7999	Assigned	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2017-07-24	312-538-8XXX	8000–8999	Assigned	T-MOBILE USA, INC.	6529	CHICGOZN01	IL
2017-07-24	708-438-0XXX	0000–0999	Assigned	T-MOBILE USA, INC.	6529	BLUEISLAND	IL
2017-07-24	708-438-1XXX	1000–1999	Assigned	T-MOBILE USA, INC.	6529	BLUEISLAND	IL
2017-07-24	708-438-2XXX	2000–2999	Assigned	T-MOBILE USA, INC.	6529	BLUEISLAND	IL
2017-07-24	708-438-3XXX	3000–3999	Assigned	T-MOBILE USA, INC.	6529	BLUEISLAND	IL
2017-07-20	216-927-6XXX	6000–6999	Assigned	T-MOBILE USA, INC.	6529	MONTRSE	OH
2017-07-20	618-434-5XXX	5000–5999	Assigned	T-MOBILE USA, INC.	6529	CARBONDALE	IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.