NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

21 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 580
ONVOY, LLC - OK 11
NEW CINGULAR WIRELESS PCS, LLC - IL 7
TELNYX LLC 1
T-MOBILE USA, INC. 1
OPENTACT INC. 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
2005-01-31 580-756-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 MARLOW OK
2005-01-31 580-817-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 TEXHOMA OK
2005-01-31 580-910-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 HEALDTON OK
2005-01-31 580-982-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 ANTLERS OK
2005-01-11 580-491-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PONCA CITY OK
2005-01-06 580-916-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DURANT OK
2004-12-13 580-461-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 GUYMON OK
2004-12-13 580-917-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2004-12-07 580-572-4XXX 4000–4999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 PERRY OK
2004-12-07 580-669-5XXX 5000–5999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 GLENCOE OK
2004-12-07 580-724-8XXX 8000–8999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 MORRISON OK
2004-11-29 580-216-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOODWARD OK
2004-11-29 580-262-2XXX 2000–2999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 BLACKWELL OK
2004-11-29 580-660-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CORDELL OK
2004-11-29 580-718-6XXX 6000–6999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 PONCA CITY OK
2004-11-29 580-723-8XXX 8000–8999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 RED ROCK OK
2004-11-22 580-928-7XXX 7000–7999Assigned METROPCS, INC. 5562 SAYRE OK
2004-11-16 580-354-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2004-10-18 580-564-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KINGSTON OK
2004-10-08 580-317-6XXX 6000–6999Assigned UNITED STATES CELLULAR - OK 6272 HUGO OK
2004-10-06 580-475-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 DUNCAN OK
2004-06-15 580-374-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 ELK CITY OK
2004-05-03 580-372-1XXX 1000–1999Assigned UNITED STATES CELLULAR - OK 6272 HUGO OK
2004-04-22 580-440-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 KAW CITY OK
2004-04-09 580-208-0XXX 0000–0999Assigned UNITED STATES CELLULAR - OK 6272 IDABEL OK
2004-03-24 580-348-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRECKENRDG OK
2004-03-24 580-647-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2004-03-15 580-230-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DURANT OK
2004-03-09 580-209-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ANTLERS OK
2004-03-05 580-339-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELK CITY OK
2004-02-09 580-310-8XXX 8000–8999Assigned UNITED STATES CELLULAR - OK 6272 ADA OK
2004-02-09 580-587-8XXX 8000–8999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 RATTAN OK
2004-02-09 580-896-2XXX 2000–2999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 COALGATE OK
2004-02-03 580-380-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DURANT OK
2004-02-03 580-380-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DURANT OK
2004-02-02 580-298-8XXX 8000–8999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 ANTLERS OK
2004-02-02 580-367-8XXX 8000–8999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 CADDO OK
2004-02-02 580-566-8XXX 8000–8999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 BOSWELL OK
2004-02-02 580-845-8XXX 8000–8999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 TUPELO OK
2004-02-02 580-847-8XXX 8000–8999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 BENNINGTON OK
2004-02-02 580-873-8XXX 8000–8999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 FORTTOWSON OK
2004-02-02 580-937-8XXX 8000–8999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 WAPANUCKA OK
2004-01-29 580-318-1XXX 1000–1999Assigned UNITED STATES CELLULAR - OK 6272 ALTUS OK
2004-01-29 580-318-2XXX 2000–2999Assigned UNITED STATES CELLULAR - OK 6272 ALTUS OK
2004-01-29 580-318-3XXX 3000–3999Assigned UNITED STATES CELLULAR - OK 6272 ALTUS OK
2004-01-29 580-318-4XXX 4000–4999Assigned UNITED STATES CELLULAR - OK 6272 ALTUS OK
2004-01-29 580-318-5XXX 5000–5999Assigned UNITED STATES CELLULAR - OK 6272 ALTUS OK
2004-01-29 580-318-8XXX 8000–8999Assigned UNITED STATES CELLULAR - OK 6272 ALTUS OK
2004-01-29 580-806-2XXX 2000–2999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 KINGSTON OK
2004-01-21 580-789-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLACKWELL OK

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.