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
2020-06-26 501-633-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2020-06-26 501-633-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2020-06-26 501-633-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2020-06-26 501-633-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2020-06-26 501-633-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2020-06-26 501-633-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 LITTLEROCK AR
2020-06-25 501-732-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MALVERN AR
2020-06-24 501-430-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 BENTON AR
2020-06-24 501-430-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 BENTON AR
2020-06-19 501-817-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FERNDALE AR
2020-06-19 501-817-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FERNDALE AR
2020-06-19 501-830-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FERNDALE AR
2020-06-15 501-427-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C MAUMELLE AR
2020-06-11 501-381-0XXX 0000–0999Assigned ONVOY, LLC - AR 348F BENTON AR
2020-06-11 501-381-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F BENTON AR
2020-06-11 501-403-0XXX 0000–0999Assigned ONVOY, LLC - AR 348F BENTON AR
2020-06-10 501-629-9XXX 9000–9999Assigned HD CARRIER LLC 321J LITTLEROCK AR
2020-06-09 501-601-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 MALVERN AR
2020-06-08 501-363-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C HOTSPRINGS AR
2020-06-08 501-630-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J LITTLEROCK AR
2020-06-04 501-426-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CONWAY AR
2020-06-03 501-290-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F SEARCY AR
2020-06-03 501-290-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F SEARCY AR
2020-06-03 501-299-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F KENSETT AR
2020-06-02 501-300-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F BRADFORD AR
2020-06-02 501-300-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F BRADFORD AR
2020-06-02 501-842-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F ENGLAND AR
2020-05-15 501-300-1XXX 1000–1999Assigned TELNYX LLC 073H BRADFORD AR
2020-05-15 501-457-4XXX 4000–4999Assigned TELNYX LLC 073H JACKSONVL AR
2020-05-14 501-510-2XXX 2000–2999Assigned E. RITTER COMMUNICATIONS, LLC 128L LONOKE AR
2020-05-08 501-710-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H LITTLEROCK AR
2020-05-08 501-710-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H LITTLEROCK AR
2020-05-05 501-403-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - AR 5179 BENTON AR
2020-05-05 501-534-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J LITTLEROCK AR
2020-04-30 501-335-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAMASCUS AR
2020-04-30 501-335-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAMASCUS AR
2020-04-30 501-893-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTER RDG AR
2020-04-30 501-893-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTER RDG AR
2020-04-29 501-394-0XXX 0000–0999Assigned TELNYX LLC 073H CABOT AR
2020-04-28 501-284-5XXX 5000–5999Assigned TELNYX LLC 073H JUDSONIA AR
2020-04-28 501-285-6XXX 6000–6999Assigned TELNYX LLC 073H ENGLAND AR
2020-04-28 501-292-6XXX 6000–6999Assigned TELNYX LLC 073H BALD KNOB AR
2020-04-28 501-299-3XXX 3000–3999Assigned TELNYX LLC 073H KENSETT AR
2020-04-28 501-397-0XXX 0000–0999Assigned TELNYX LLC 073H REDFIELD AR
2020-04-28 501-434-5XXX 5000–5999Assigned TELNYX LLC 073H MCRAE AR
2020-04-28 501-506-4XXX 4000–4999Assigned TELNYX LLC 073H GRIFFITHVL AR
2020-04-28 501-509-1XXX 1000–1999Assigned TELNYX LLC 073H COY AR
2020-04-28 501-600-1XXX 1000–1999Assigned TELNYX LLC 073H PLEASANTPL AR
2020-04-27 501-426-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 CONWAY AR
2020-04-15 501-988-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL 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.