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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-06-04 501-394-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CABOT AR
2021-06-04 501-409-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H BENTON AR
2021-06-04 501-462-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F SEARCY AR
2021-06-04 501-462-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F SEARCY AR
2021-06-04 501-462-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F SEARCY AR
2021-06-04 501-462-5XXX 5000–5999Assigned ONVOY, LLC - AR 348F SEARCY AR
2021-06-04 501-464-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H BALD KNOB AR
2021-06-04 501-999-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H BEEBE AR
2021-06-03 501-474-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F MCRAE AR
2021-06-03 501-999-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F BEEBE AR
2021-06-03 501-999-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F BEEBE AR
2021-06-02 501-459-1XXX 1000–1999Assigned STRATUS NETWORKS 495J CONWAY AR
2021-05-20 501-453-5XXX 5000–5999Assigned E. RITTER COMMUNICATIONS, LLC 128L JACKSONVL AR
2021-05-20 501-453-6XXX 6000–6999Assigned E. RITTER COMMUNICATIONS, LLC 128L JACKSONVL AR
2021-05-18 501-643-6XXX 6000–6999Assigned TWILIO INTERNATIONAL, INC. 506J LITTLEROCK AR
2021-05-15 501-356-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 JESSIEVL AR
2021-05-15 501-999-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F BEEBE AR
2021-05-15 501-999-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F BEEBE AR
2021-05-04 501-737-5XXX 5000–5999Assigned AIRUS, INC. - AR 578H SCOTT AR
2021-05-03 501-451-0XXX 0000–0999Assigned AIRUS, INC. - AR 578H LITTLEROCK AR
2021-04-23 501-441-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H LITTLEROCK AR
2021-04-23 501-441-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H LITTLEROCK AR
2021-04-21 501-338-1XXX 1000–1999Assigned METROPCS, INC. 5562 BISMARCK AR
2021-04-21 501-652-2XXX 2000–2999Assigned METROPCS, INC. 5562 MORRILTON AR
2021-04-21 501-755-0XXX 0000–0999Assigned METROPCS, INC. 5562 QUITMAN AR
2021-04-20 501-640-1XXX 1000–1999Assigned TON80 COMMUNICATIONS, LLC 516J LITTLEROCK AR
2021-04-16 501-665-0XXX 0000–0999Assigned COMMIO, LLC 939H LITTLEROCK AR
2021-04-16 501-910-0XXX 0000–0999Assigned ONVOY, LLC - AR 348F LITTLEROCK AR
2021-04-13 501-430-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BENTON AR
2021-04-12 501-441-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AR 802C LITTLEROCK AR
2021-04-12 501-621-2XXX 2000–2999Assigned TELNYX LLC 073H LITTLEROCK AR
2021-03-19 501-226-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F JESSIEVL AR
2021-03-19 501-356-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F JESSIEVL AR
2021-03-19 501-361-9XXX 9000–9999Assigned ONVOY, LLC - AR 348F BRYANTCGVL AR
2021-03-19 501-426-8XXX 8000–8999Assigned ONVOY, LLC - AR 348F CONWAY AR
2021-03-19 501-426-9XXX 9000–9999Assigned ONVOY, LLC - AR 348F CONWAY AR
2021-03-19 501-448-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F FERNDALE AR
2021-03-19 501-457-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F JACKSONVL AR
2021-03-19 501-464-1XXX 1000–1999Assigned ONVOY, LLC - AR 348F BALD KNOB AR
2021-03-19 501-464-2XXX 2000–2999Assigned ONVOY, LLC - AR 348F BALD KNOB AR
2021-03-19 501-482-6XXX 6000–6999Assigned ONVOY, LLC - AR 348F FERNDALE AR
2021-03-19 501-596-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F JACKSONVL AR
2021-03-19 501-645-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F MORRILTON AR
2021-03-19 501-645-4XXX 4000–4999Assigned ONVOY, LLC - AR 348F MORRILTON AR
2021-03-19 501-737-7XXX 7000–7999Assigned ONVOY, LLC - AR 348F SCOTT AR
2021-03-19 501-983-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F JACKSONVL AR
2021-03-19 501-988-3XXX 3000–3999Assigned ONVOY, LLC - AR 348F JACKSONVL AR
2021-03-18 501-409-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTON AR
2021-03-18 501-599-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SYVNHLSHWD AR
2021-03-17 501-452-1XXX 1000–1999Assigned STRATUS NETWORKS 495J MORRILTON 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.