NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

13 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 423
NEW CINGULAR WIRELESS PCS, LLC - GA 3
BANDWIDTH.COM CLEC, LLC - TN 3
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 2
AHOI LLC 2
TELNYX 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
2022-01-09 423-672-9XXX 9000–9999Assigned SUNCOM DBA T-MOBILE USA 8645 JOHNSON CY TN
2022-01-07 423-749-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F COLLEGEDL TN
2021-12-30 423-696-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E ROGERSVL TN
2021-12-30 423-759-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MORRISTOWN TN
2021-12-30 423-759-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MORRISTOWN TN
2021-12-30 423-759-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MORRISTOWN TN
2021-12-30 423-759-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MORRISTOWN TN
2021-12-30 423-776-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PIKEVILLE TN
2021-12-30 423-776-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PIKEVILLE TN
2021-12-30 423-776-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PIKEVILLE TN
2021-12-30 423-776-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PIKEVILLE TN
2021-12-30 423-776-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PIKEVILLE TN
2021-12-30 423-776-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PIKEVILLE TN
2021-12-30 423-776-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PIKEVILLE TN
2021-12-30 423-776-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PIKEVILLE TN
2021-12-30 423-776-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PIKEVILLE TN
2021-12-30 423-776-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PIKEVILLE TN
2021-12-29 423-749-9XXX 9000–9999Assigned METROPCS, INC. 5562 COLLEGEDL TN
2021-12-16 423-549-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H JOHNSON CY TN
2021-12-16 423-549-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H JOHNSON CY TN
2021-12-15 423-740-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CLEVELAND TN
2021-12-15 423-769-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F BENTON TN
2021-12-14 423-250-4XXX 4000–4999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 CLEVELAND TN
2021-12-14 423-250-6XXX 6000–6999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 CLEVELAND TN
2021-12-14 423-407-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F SPRINGCITY TN
2021-12-14 423-738-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRISTOL TN
2021-12-14 423-738-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRISTOL TN
2021-12-14 423-738-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRISTOL TN
2021-12-14 423-738-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRISTOL TN
2021-12-14 423-738-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRISTOL TN
2021-12-14 423-813-5XXX 5000–5999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 CLEVELAND TN
2021-12-14 423-813-6XXX 6000–6999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 CLEVELAND TN
2021-12-13 423-689-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRISTOL TN
2021-12-13 423-689-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRISTOL TN
2021-12-13 423-689-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRISTOL TN
2021-12-13 423-689-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRISTOL TN
2021-12-13 423-689-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRISTOL TN
2021-12-03 423-719-2XXX 2000–2999Assigned NUSO, LLC 478J CHATTNOOGA TN
2021-12-02 423-705-2XXX 2000–2999Assigned NUSO, LLC 478J JOHNSON CY TN
2021-12-01 423-691-9XXX 9000–9999Assigned ONVOY, LLC - TN 525E ATHENS TN
2021-11-19 423-670-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-11-19 423-673-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-11-19 423-673-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-11-19 423-673-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-11-19 423-673-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-11-19 423-673-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-11-19 423-848-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-11-19 423-848-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-11-19 423-848-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-11-19 423-848-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY 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.