NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

15 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 931
ONVOY, LLC - TN 13
INTRADO COMMUNICATIONS, LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 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
2020-01-17 931-256-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SPARTA TN
2020-01-17 931-800-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TULLAHOMA TN
2020-01-15 931-290-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CELINA TN
2020-01-15 931-290-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CELINA TN
2020-01-15 931-336-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOSS TN
2020-01-15 931-336-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOSS TN
2020-01-10 931-447-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PULASKI TN
2020-01-06 931-329-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 HOHENWALD TN
2020-01-02 931-286-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 COLUMBIA TN
2019-12-27 931-999-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLARKSVL TN
2019-12-27 931-999-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLARKSVL TN
2019-12-05 931-535-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E NEWJHNSNVL TN
2019-12-04 931-593-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E LOBELVILLE TN
2019-11-29 931-208-9XXX 9000–9999Assigned TELNYX LLC 073H MCEWEN TN
2019-11-29 931-888-2XXX 2000–2999Assigned FRACTEL, LLC 965H WAVERLY TN
2019-11-29 931-888-4XXX 4000–4999Assigned FRACTEL, LLC 965H WAVERLY TN
2019-11-29 931-888-5XXX 5000–5999Assigned FRACTEL, LLC 965H WAVERLY TN
2019-11-29 931-888-7XXX 7000–7999Assigned FRACTEL, LLC 965H WAVERLY TN
2019-11-25 931-391-3XXX 3000–3999Assigned ONVOY, LLC - TN 525E LINDEN TN
2019-11-22 931-463-0XXX 0000–0999Assigned TELNYX LLC 073H SEWANEE TN
2019-11-19 931-213-3XXX 3000–3999Assigned ONVOY, LLC - TN 525E CLIFTON TN
2019-11-19 931-253-5XXX 5000–5999Assigned ONVOY, LLC - TN 525E WAYNESBORO TN
2019-11-19 931-293-9XXX 9000–9999Assigned ONVOY, LLC - TN 525E CORNERSVL TN
2019-11-19 931-600-6XXX 6000–6999Assigned ONVOY, LLC - TN 525E COLLINWOOD TN
2019-11-08 931-213-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CLIFTON TN
2019-11-08 931-253-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WAYNESBORO TN
2019-10-31 931-203-2XXX 2000–2999Assigned BEN LOMAND COMMUNICATIONS, INC. 4586 SEWANEE TN
2019-10-31 931-203-3XXX 3000–3999Assigned BEN LOMAND COMMUNICATIONS, INC. 4586 SEWANEE TN
2019-10-21 931-999-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLARKSVL TN
2019-10-17 931-777-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F COLUMBIA TN
2019-10-17 931-777-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F COLUMBIA TN
2019-10-01 931-371-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 PULASKI TN
2019-09-26 931-248-7XXX 7000–7999Assigned ONVOY, LLC - TN 525E CROSSVILLE TN
2019-09-26 931-248-8XXX 8000–8999Assigned ONVOY, LLC - TN 525E CROSSVILLE TN
2019-09-18 931-271-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 MCMINNVL TN
2019-09-16 931-999-2XXX 2000–2999Assigned VONAGE AMERICA LLC 197D CLARKSVL TN
2019-09-13 931-236-2XXX 2000–2999Assigned ONVOY, LLC - TN 525E FREDONIA TN
2019-09-13 931-236-3XXX 3000–3999Assigned ONVOY, LLC - TN 525E FREDONIA TN
2019-09-13 931-256-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E SPARTA TN
2019-09-12 931-614-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLARKSVL TN
2019-09-06 931-280-9XXX 9000–9999Assigned METROPCS, INC. 5562 BAXTER TN
2019-08-29 931-903-2XXX 2000–2999Assigned ONVOY, LLC - TN 525E LAWRENCEBG TN
2019-08-29 931-909-2XXX 2000–2999Assigned ONVOY, LLC - TN 525E SHELBYVL TN
2019-08-29 931-910-2XXX 2000–2999Assigned ONVOY, LLC - TN 525E PETERSBURG TN
2019-08-20 931-202-5XXX 5000–5999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 CROSSVILLE TN
2019-08-20 931-250-9XXX 9000–9999Assigned POWERTEL NASHVILLE LICENSES, INC. 7476 CROSSVILLE TN
2019-08-06 931-655-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 PETERSBURG TN
2019-08-02 931-777-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - TN 114F COLUMBIA TN
2019-07-31 931-485-4XXX 4000–4999Assigned ONVOY, LLC - TN 525E SO GUTHRIE TN
2019-07-25 931-777-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 COLUMBIA 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.