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
2021-09-24 423-673-7XXX 7000–7999Assigned ONVOY, LLC - TN 525E JOHNSON CY TN
2021-09-24 423-673-8XXX 8000–8999Assigned ONVOY, LLC - TN 525E JOHNSON CY TN
2021-09-24 423-689-3XXX 3000–3999Assigned ONVOY, LLC - TN 525E BRISTOL TN
2021-09-24 423-689-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E BRISTOL TN
2021-09-24 423-830-2XXX 2000–2999Assigned ONVOY, LLC - TN 525E KINGSPORT TN
2021-09-24 423-850-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E JONESBORO TN
2021-09-24 423-873-3XXX 3000–3999Assigned ONVOY, LLC - TN 525E STONEY CRK TN
2021-09-24 423-897-7XXX 7000–7999Assigned ONVOY, LLC - TN 525E FALLBRANCH TN
2021-09-24 423-904-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E CHATTNOOGA TN
2021-09-24 423-904-6XXX 6000–6999Assigned ONVOY, LLC - TN 525E CHATTNOOGA TN
2021-09-24 423-957-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E HAMPTON TN
2021-09-16 423-696-7XXX 7000–7999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 ROGERSVL TN
2021-09-16 423-696-8XXX 8000–8999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 ROGERSVL TN
2021-09-16 423-696-9XXX 9000–9999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 ROGERSVL TN
2021-09-10 423-672-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H JOHNSON CY TN
2021-09-09 423-577-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 ONEIDA TN
2021-09-09 423-604-7XXX 7000–7999Assigned COMMIO, LLC 939H ETOWAH TN
2021-09-09 423-604-9XXX 9000–9999Assigned COMMIO, LLC 939H ETOWAH TN
2021-09-09 423-632-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 WARTBURG TN
2021-09-08 423-694-9XXX 9000–9999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 SWEETWATER TN
2021-09-07 423-814-6XXX 6000–6999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 SWEETWATER TN
2021-09-07 423-814-7XXX 7000–7999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 SWEETWATER TN
2021-09-03 423-750-0XXX 0000–0999Assigned SKYE TELECOM LLC DBA SKYETEL 622J CHATTNOOGA TN
2021-09-03 423-848-8XXX 8000–8999Assigned SKYE TELECOM LLC DBA SKYETEL 622J JOHNSON CY TN
2021-09-02 423-692-1XXX 1000–1999Assigned SKYBEST COMMUNICATIONS, INC. - TN 081J BUTLER TN
2021-08-30 423-523-6XXX 6000–6999Assigned TERRA NOVA TELECOM INC. 145J BULLS GAP TN
2021-08-27 423-904-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H CHATTNOOGA TN
2021-08-27 423-904-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H CHATTNOOGA TN
2021-08-27 423-904-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CHATTNOOGA TN
2021-08-27 423-904-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CHATTNOOGA TN
2021-08-23 423-660-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHATTNOOGA TN
2021-08-23 423-660-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHATTNOOGA TN
2021-08-23 423-660-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHATTNOOGA TN
2021-08-23 423-660-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHATTNOOGA TN
2021-08-23 423-660-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHATTNOOGA TN
2021-08-23 423-660-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHATTNOOGA TN
2021-08-23 423-671-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHATTNOOGA TN
2021-08-09 423-673-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-08-09 423-880-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-08-09 423-905-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-08-09 423-905-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-08-09 423-905-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-08-09 423-905-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-08-09 423-905-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-08-09 423-905-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-08-09 423-905-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-08-09 423-905-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-08-09 423-905-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-08-09 423-979-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JOHNSON CY TN
2021-08-04 423-456-1XXX 1000–1999Assigned METROPCS, INC. 5562 LAFOLLETTE 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.