NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

23 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 865
ONVOY, LLC - TN 19
BANDWIDTH.COM CLEC, LLC - TN 2
NEW CINGULAR WIRELESS PCS, LLC - GA 1
INTRADO 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
2020-11-30 865-378-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-11-18 865-895-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F KNOXVILLE TN
2020-11-12 865-350-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F JEFFERSNCY TN
2020-11-12 865-940-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - TN 124F DANDRIDGE TN
2020-11-11 865-505-6XXX 6000–6999Assigned TWIN LAKES COMMUNICATIONS, INC. - TN 204G SEVIERVL TN
2020-11-10 865-370-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TN 4806 KNOXVILLE TN
2020-10-12 865-225-8XXX 8000–8999Assigned TWIN LAKES COMMUNICATIONS, INC. - TN 204G MASCOT TN
2020-09-30 865-378-1XXX 1000–1999Assigned IP HORIZON LLC 515J KNOXVILLE TN
2020-09-04 865-369-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-369-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-369-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-369-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-369-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-549-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-566-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-602-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-602-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-602-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-606-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-839-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-895-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-970-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-04 865-985-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-09-03 865-419-1XXX 1000–1999Assigned TWIN LAKES COMMUNICATIONS, INC. - TN 204G ROCKWOOD TN
2020-08-27 865-364-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KNOXVILLE TN
2020-08-27 865-364-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KNOXVILLE TN
2020-08-27 865-364-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KNOXVILLE TN
2020-08-27 865-369-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KNOXVILLE TN
2020-08-27 865-369-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KNOXVILLE TN
2020-08-27 865-369-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KNOXVILLE TN
2020-08-27 865-370-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KNOXVILLE TN
2020-08-27 865-371-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KNOXVILLE TN
2020-08-27 865-500-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KNOXVILLE TN
2020-08-27 865-895-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 KNOXVILLE TN
2020-08-20 865-371-1XXX 1000–1999Assigned NUSO, LLC 478J KNOXVILLE TN
2020-08-17 865-895-8XXX 8000–8999Assigned TWILIO INTERNATIONAL, INC. 506J KNOXVILLE TN
2020-08-10 865-326-6XXX 6000–6999Assigned ONVOY, LLC - TN 525E WASHBURN TN
2020-08-10 865-345-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E TATE SPG TN
2020-08-05 865-279-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 SHARPSCHPL TN
2020-08-05 865-328-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 LENOIRCITY TN
2020-08-05 865-352-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 SHARPSCHPL TN
2020-07-28 865-370-9XXX 9000–9999Assigned HD CARRIER LLC 321J KNOXVILLE TN
2020-07-09 865-345-6XXX 6000–6999Assigned FRACTEL, LLC 965H TATE SPG TN
2020-07-08 865-606-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-07-08 865-606-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-07-08 865-609-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-07-08 865-666-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-07-08 865-666-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-07-08 865-670-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE TN
2020-07-08 865-900-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 KNOXVILLE 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.