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
2014-11-05 423-530-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KINGSPORT TN
2014-11-04 423-617-1XXX 1000–1999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 ATHENS TN
2014-11-04 423-617-2XXX 2000–2999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 ATHENS TN
2014-11-04 423-617-3XXX 3000–3999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 ATHENS TN
2014-11-03 423-405-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F ATHENS TN
2014-10-28 423-375-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F BENTON TN
2014-10-27 423-243-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F SODDYDAISY TN
2014-10-10 423-270-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 ERWIN TN
2014-10-10 423-273-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MORRISTOWN TN
2014-10-10 423-641-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CLEVELAND TN
2014-10-10 423-707-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 ELIZABTHTN TN
2014-10-09 423-708-9XXX 9000–9999Assigned METROPCS, INC. 5562 CHATTNOOGA TN
2014-10-07 423-777-7XXX 7000–7999Assigned ONVOY, LLC - TN 525E CHATTNOOGA TN
2014-10-06 423-298-0XXX 0000–0999Assigned METROPCS, INC. 5562 CHATTNOOGA TN
2014-10-01 423-226-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F CHURCHHILL TN
2014-09-23 423-241-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 COPPERBSIN TN
2014-09-23 423-405-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F ATHENS TN
2014-09-12 423-460-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MOUNTAINCY TN
2014-09-10 423-439-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 JOHNSON CY TN
2014-09-10 423-493-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN
2014-09-10 423-561-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 SWEETWATER TN
2014-09-10 423-763-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN
2014-09-10 423-826-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN
2014-08-25 423-592-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN 7278 LAFOLLETTE TN
2014-08-21 423-616-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F MORRISTOWN TN
2014-08-21 423-617-4XXX 4000–4999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 ATHENS TN
2014-08-21 423-617-5XXX 5000–5999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 ATHENS TN
2014-08-21 423-617-6XXX 6000–6999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 ATHENS TN
2014-08-21 423-617-8XXX 8000–8999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 ATHENS TN
2014-08-15 423-460-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MOUNTAINCY TN
2014-08-13 423-609-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 GREENEVL TN
2014-08-13 423-661-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN
2014-08-11 423-641-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E CLEVELAND TN
2014-08-07 423-491-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 JOHNSON CY TN
2014-08-07 423-530-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KINGSPORT TN
2014-08-05 423-270-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J ERWIN TN
2014-08-05 423-539-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 ONEIDA TN
2014-08-04 423-430-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F JOHNSON CY TN
2014-08-04 423-430-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F JOHNSON CY TN
2014-08-04 423-551-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F CHATTNOOGA TN
2014-08-04 423-763-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F CHATTNOOGA TN
2014-08-04 423-834-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F CHATTNOOGA TN
2014-08-04 423-847-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F CHATTNOOGA TN
2014-08-04 423-913-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J JONESBORO TN
2014-07-29 423-441-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 CUMBERLDGP TN
2014-07-25 423-551-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 CHATTNOOGA TN
2014-07-11 423-237-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F NEWPORT TN
2014-07-11 423-551-3XXX 3000–3999Assigned ELECTRIC POWER BOARD OF CHATTANOOGA 4645 CHATTNOOGA TN
2014-07-11 423-551-4XXX 4000–4999Assigned ELECTRIC POWER BOARD OF CHATTANOOGA 4645 CHATTNOOGA TN
2014-07-11 423-551-8XXX 8000–8999Assigned ELECTRIC POWER BOARD OF CHATTANOOGA 4645 CHATTNOOGA 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.