NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

21 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 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
2007-02-21 580-799-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELK CITY OK
2007-02-16 580-258-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COALGATE OK
2007-02-16 580-371-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TISHOMINGO OK
2007-02-16 580-713-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAWTON OK
2007-02-16 580-743-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUGO OK
2007-02-16 580-759-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STRATFORD OK
2007-02-15 580-372-3XXX 3000–3999Assigned UNITED STATES CELLULAR - OK 6272 HUGO OK
2007-02-15 580-559-5XXX 5000–5999Assigned SOUTHWESTERN BELL 9533 ADA OK
2007-02-06 580-647-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2007-01-18 580-229-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HEALDTON OK
2007-01-18 580-239-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ATOKA OK
2007-01-18 580-263-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MADILL OK
2007-01-18 580-271-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ANTLERS OK
2007-01-17 580-238-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARIETTA OK
2007-01-16 580-565-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KINGSTON OK
2007-01-15 580-216-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOODWARD OK
2007-01-02 580-749-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 PONCA CITY OK
2006-12-27 580-277-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARDMORE OK
2006-12-27 580-380-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DURANT OK
2006-12-22 580-483-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAWTON OK
2006-12-15 580-235-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA OK
2006-12-15 580-551-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ENID OK
2006-12-13 580-458-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2006-12-08 580-224-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARDMORE OK
2006-12-07 580-362-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWKIRK OK
2006-11-20 580-559-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 ADA OK
2006-11-20 580-649-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALTUS OK
2006-11-09 580-461-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 GUYMON OK
2006-10-31 580-354-8XXX 8000–8999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 LAWTON OK
2006-10-31 580-395-5XXX 5000–5999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 MEDFORD OK
2006-10-31 580-743-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUGO OK
2006-10-24 580-715-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLINTON OK
2006-10-24 580-890-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WEATHERFD OK
2006-10-06 580-319-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 ARDMORE OK
2006-10-06 580-458-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2006-10-04 580-483-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAWTON OK
2006-09-29 580-491-1XXX 1000–1999Assigned METROPCS, INC. 5562 PONCA CITY OK
2006-09-29 580-606-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 DUNCAN OK
2006-09-22 580-303-8XXX 8000–8999Assigned UNITED STATES CELLULAR - OK 6272 ELK CITY OK
2006-09-22 580-547-9XXX 9000–9999Assigned UNITED STATES CELLULAR - OK 6272 CLINTON OK
2006-09-22 580-816-0XXX 0000–0999Assigned UNITED STATES CELLULAR - OK 6272 WEATHERFD OK
2006-09-19 580-483-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAWTON OK
2006-09-19 580-483-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAWTON OK
2006-08-29 580-337-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 BESSIE OK
2006-08-29 580-377-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 WOODWARD OK
2006-08-29 580-547-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 CLINTON OK
2006-08-28 580-302-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 WEATHERFD OK
2006-08-25 580-339-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELK CITY OK
2006-08-25 580-369-4XXX 4000–4999Assigned CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 DAVIS OK
2006-08-17 580-540-4XXX 4000–4999Assigned CSC VOICE, LLC 612K ENID OK

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.