NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

25 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 501
ONVOY, LLC - AR 15
BANDWIDTH.COM CLEC, LLC - AR 5
CSC WIRELESS, LLC 2
NEW CINGULAR WIRELESS PCS, LLC - IL 1
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 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
2009-10-06 501-414-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-10-06 501-414-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-10-06 501-438-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LONOKE AR
2009-09-16 501-932-9XXX 9000–9999Assigned WINDSTREAM COMMUNICATIONS, INC. - AR 7656 CONWAY AR
2009-09-11 501-286-7XXX 7000–7999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G CABOT AR
2009-09-11 501-533-3XXX 3000–3999Assigned TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR 048G JACKSONVL AR
2009-09-08 501-414-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-09-08 501-414-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-09-08 501-414-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-09-08 501-548-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 CONWAY AR
2009-09-08 501-672-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 BENTON AR
2009-08-17 501-303-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTON AR
2009-08-17 501-499-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CONWAY AR
2009-08-11 501-859-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2009-08-11 501-859-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2009-08-10 501-414-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-07-23 501-266-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C LONOKE AR
2009-07-21 501-850-7XXX 7000–7999Assigned WINDSTREAM COMMUNICATIONS, INC. - AR 7656 LITTLEROCK AR
2009-07-21 501-850-8XXX 8000–8999Assigned WINDSTREAM COMMUNICATIONS, INC. - AR 7656 LITTLEROCK AR
2009-07-09 501-251-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-07-09 501-251-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-07-08 501-708-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2009-07-08 501-708-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2009-07-08 501-708-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2009-07-08 501-708-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2009-07-07 501-205-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C CONWAY AR
2009-07-07 501-672-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C BENTON AR
2009-06-16 501-897-3XXX 3000–3999Assigned WINDSTREAM COMMUNICATIONS, INC. - AR 7656 WRIGHTSVL AR
2009-06-05 501-286-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 CABOT AR
2009-06-05 501-548-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 CONWAY AR
2009-06-05 501-813-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-06-05 501-813-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-06-05 501-813-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-05-20 501-613-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2009-05-15 501-458-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MALVERN AR
2009-05-01 501-589-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 QUITMAN AR
2009-04-20 501-850-0XXX 0000–0999Assigned WINDSTREAM COMMUNICATIONS, INC. - AR 7656 LITTLEROCK AR
2009-04-07 501-672-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 BENTON AR
2009-03-23 501-262-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOTSPRINGS AR
2009-03-05 501-368-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SEARCY AR
2009-02-11 501-291-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2009-02-11 501-291-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2009-02-11 501-291-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2009-02-11 501-291-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LITTLEROCK AR
2009-02-05 501-813-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-02-05 501-813-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2009-01-27 501-251-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2009-01-27 501-251-9XXX 9000–9999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2009-01-27 501-291-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2009-01-27 501-291-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR

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.