NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

6 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 870
ONVOY, LLC - AR 5
AHOI 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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2011-07-14 870-502-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2011-07-14 870-502-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2011-07-14 870-502-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2011-07-12 870-281-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLYTHEVL AR
2011-07-12 870-281-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLYTHEVL AR
2011-06-24 870-794-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
2011-06-24 870-794-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
2011-06-24 870-794-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PINE BLUFF AR
2011-06-24 870-826-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOPE AR
2011-06-03 870-362-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WYNNE AR
2011-06-03 870-753-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HELENA AR
2011-06-03 870-949-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAGNOLIA AR
2011-06-02 870-280-1XXX 1000–1999Assigned WINDSTREAM ARKANSAS, INC. 1691 HARRISON AR
2011-05-27 870-738-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2011-05-27 870-738-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2011-05-27 870-738-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2011-05-27 870-738-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2011-05-27 870-738-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2011-05-27 870-738-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2011-05-27 870-738-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 JONESBORO AR
2011-05-16 870-821-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARIANNA AR
2011-05-09 870-587-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C WYNNE AR
2011-05-09 870-626-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C MAGNOLIA AR
2011-05-02 870-502-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2011-05-02 870-502-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2011-05-02 870-502-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2011-05-02 870-502-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2011-05-02 870-502-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2011-04-01 870-413-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2011-04-01 870-413-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PINE BLUFF AR
2011-03-30 870-262-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C BATESVILLE AR
2011-03-30 870-283-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C CAVE CITY AR
2011-03-30 870-442-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C CHERRY VLY AR
2011-03-30 870-477-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C CASH AR
2011-03-30 870-589-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BRINKLEY AR
2011-03-30 870-657-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C BLACKFIHLK AR
2011-03-30 870-668-2XXX 2000–2999Assigned AT&T ENTERPRISES, LLC 516C CONCORD AR
2011-03-30 870-823-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C CRAWFODSVL AR
2011-03-30 870-838-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C BLYTHEVL AR
2011-03-30 870-878-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C BLACK ROCK AR
2011-03-30 870-899-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C BODCAW AR
2011-03-25 870-890-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 FORDYCE AR
2011-03-23 870-742-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C STRONG AR
2011-03-22 870-635-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 W MEMPHIS AR
2011-03-21 870-203-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C JONESBORO AR
2011-03-21 870-217-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C NEWPORT AR
2011-03-21 870-252-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C GRUBBS AR
2011-03-21 870-339-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C HUGHES AR
2011-03-21 870-343-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C TURRELL AR
2011-03-21 870-493-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C DELL AR

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.