NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

13 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2007-01-04 423-895-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 ELIZABTHTN TN
2006-12-28 423-262-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 JOHNSON CY TN
2006-12-28 423-278-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 GREENEVL TN
2006-12-27 423-532-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K NEWPORT TN
2006-12-22 423-342-0XXX 0000–0999Assigned SUNCOM DBA T-MOBILE USA 8645 ELIZABTHTN TN
2006-12-22 423-946-6XXX 6000–6999Assigned SUNCOM DBA T-MOBILE USA 8645 JOHNSON CY TN
2006-12-15 423-243-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SODDYDAISY TN
2006-12-11 423-244-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CLEVELAND TN
2006-12-11 423-307-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MORRISTOWN TN
2006-12-11 423-333-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 ATHENS TN
2006-12-06 423-223-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ONEIDA TN
2006-11-22 423-723-4XXX 4000–4999Assigned METROPCS, INC. 5562 KINGSPORT TN
2006-11-20 423-468-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E CHATTNOOGA TN
2006-11-20 423-468-6XXX 6000–6999Assigned ONVOY, LLC - TN 525E CHATTNOOGA TN
2006-11-20 423-468-7XXX 7000–7999Assigned ONVOY, LLC - TN 525E CHATTNOOGA TN
2006-11-20 423-468-8XXX 8000–8999Assigned ONVOY, LLC - TN 525E CHATTNOOGA TN
2006-11-20 423-790-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CLEVELAND TN
2006-11-16 423-276-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KINGSPORT TN
2006-11-14 423-212-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BLOUNTVL TN
2006-11-14 423-256-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CHURCHHILL TN
2006-11-06 423-220-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 ERWIN TN
2006-11-03 423-208-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHATTNOOGA TN
2006-11-03 423-208-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHATTNOOGA TN
2006-11-03 423-723-3XXX 3000–3999Assigned METROPCS, INC. 5562 KINGSPORT TN
2006-10-31 423-391-3XXX 3000–3999Assigned UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 4510 BLUFF CITY TN
2006-10-31 423-465-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWPORT TN
2006-10-31 423-948-2XXX 2000–2999Assigned SUNCOM DBA T-MOBILE USA 8645 LIMESTONE TN
2006-10-20 423-307-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MORRISTOWN TN
2006-10-19 423-468-1XXX 1000–1999Assigned ELECTRIC POWER BOARD OF CHATTANOOGA 4645 CHATTNOOGA TN
2006-10-17 423-333-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 ATHENS TN
2006-10-17 423-468-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN
2006-10-17 423-536-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 SWEETWATER TN
2006-10-17 423-972-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 GREENEVL TN
2006-10-12 423-465-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 NEWPORT TN
2006-10-12 423-896-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 HAMPTON TN
2006-10-11 423-297-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ELIZABTHTN TN
2006-10-09 423-217-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRISTOL TN
2006-10-04 423-385-0XXX 0000–0999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 CHATTNOOGA TN
2006-10-04 423-424-8XXX 8000–8999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 CHATTNOOGA TN
2006-09-20 423-438-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MORRISTOWN TN
2006-09-14 423-424-9XXX 9000–9999Assigned POWERTEL ATLANTA LICENSES, INC. 7473 CHATTNOOGA TN
2006-09-13 423-489-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CUMBERLDGP TN
2006-09-13 423-539-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ONEIDA TN
2006-09-12 423-465-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWPORT TN
2006-09-11 423-426-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 LIMESTONE TN
2006-09-11 423-863-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KINGSPORT TN
2006-09-08 423-213-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 ELIZABTHTN TN
2006-09-08 423-315-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN
2006-09-08 423-326-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN
2006-09-08 423-326-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 CHATTNOOGA TN

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.