NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

6 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 901
ONVOY, LLC - TN 4
NEW CINGULAR WIRELESS PCS, LLC - GA 1
E. RITTER COMMUNICATIONS, 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
2020-11-09 901-582-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MEMPHIS TN
2020-11-02 901-571-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-11-02 901-571-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-11-02 901-571-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-11-02 901-571-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-11-02 901-571-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-11-02 901-571-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-11-02 901-571-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-11-02 901-571-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-11-02 901-571-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-11-02 901-571-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-10-29 901-370-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-10-29 901-560-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2020-10-22 901-560-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2020-10-22 901-560-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2020-10-22 901-560-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2020-10-22 901-560-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2020-10-22 901-560-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2020-10-22 901-560-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2020-10-22 901-560-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MEMPHIS TN
2020-10-15 901-499-2XXX 2000–2999Assigned ONVOY, LLC - TN 525E ARLINGTON TN
2020-10-15 901-499-3XXX 3000–3999Assigned ONVOY, LLC - TN 525E ARLINGTON TN
2020-10-15 901-499-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E ARLINGTON TN
2020-10-15 901-699-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COVINGTON TN
2020-10-15 901-699-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COVINGTON TN
2020-10-15 901-799-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COLLIERVL TN
2020-10-15 901-799-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COLLIERVL TN
2020-10-13 901-560-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MEMPHIS TN
2020-09-30 901-560-1XXX 1000–1999Assigned IP HORIZON LLC 515J MEMPHIS TN
2020-09-29 901-554-7XXX 7000–7999Assigned VONAGE AMERICA LLC 197D MEMPHIS TN
2020-09-11 901-554-6XXX 6000–6999Assigned NUSO, LLC 478J MEMPHIS TN
2020-09-06 901-554-8XXX 8000–8999Assigned TELNYX LLC 073H MEMPHIS TN
2020-09-03 901-554-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2020-09-03 901-554-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E MEMPHIS TN
2020-09-03 901-558-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MEMPHIS TN
2020-09-01 901-407-3XXX 3000–3999Assigned METROPCS, INC. 5562 MILLINGTON TN
2020-08-31 901-554-0XXX 0000–0999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2020-08-31 901-554-1XXX 1000–1999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2020-08-31 901-554-2XXX 2000–2999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2020-08-31 901-554-9XXX 9000–9999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2020-08-25 901-519-1XXX 1000–1999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2020-08-25 901-519-5XXX 5000–5999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2020-08-25 901-538-0XXX 0000–0999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2020-08-25 901-538-1XXX 1000–1999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2020-08-25 901-549-0XXX 0000–0999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2020-08-25 901-549-1XXX 1000–1999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2020-08-25 901-549-9XXX 9000–9999Assigned POWERTEL MEMPHIS LICENSES, INC. 7474 MEMPHIS TN
2020-08-19 901-549-8XXX 8000–8999Assigned TWILIO INTERNATIONAL, INC. 506J MEMPHIS TN
2020-08-12 901-499-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F ARLINGTON TN
2020-08-12 901-519-2XXX 2000–2999Assigned ONVOY, LLC - TN 525E MEMPHIS TN

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.