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
2018-02-20 580-324-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F ENID OK
2018-02-07 580-744-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F FAIRVIEW OK
2018-01-26 580-370-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F PERRY OK
2018-01-11 580-967-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA OK
2018-01-11 580-967-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA OK
2017-12-12 580-967-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ADA OK
2017-12-12 580-967-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ADA OK
2017-12-11 580-980-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 CALERA OK
2017-12-08 580-691-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 CARTWRIGHT OK
2017-12-08 580-714-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 ACHILLE OK
2017-12-08 580-733-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 BOKCHITO OK
2017-12-08 580-942-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 COLBERT OK
2017-12-07 580-967-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 ADA OK
2017-10-02 580-722-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C NEWKIRK OK
2017-09-26 580-860-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 DUNCAN OK
2017-09-25 580-204-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C BOSWELL OK
2017-09-25 580-387-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TISHOMINGO OK
2017-09-25 580-890-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEATHERFD OK
2017-09-25 580-982-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ANTLERS OK
2017-09-20 580-967-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 ADA OK
2017-08-23 580-860-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DUNCAN OK
2017-08-23 580-860-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DUNCAN OK
2017-08-23 580-860-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DUNCAN OK
2017-08-21 580-754-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 GUYMON OK
2017-08-14 580-401-4XXX 4000–4999Assigned METROPCS, INC. 5562 PONCA CITY OK
2017-08-14 580-768-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARDMORE OK
2017-08-10 580-970-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALTUS OK
2017-08-10 580-970-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALTUS OK
2017-08-09 580-954-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALTUS OK
2017-08-02 580-412-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C FAIRVIEW OK
2017-07-25 580-971-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C SNYDER OK
2017-07-06 580-459-9XXX 9000–9999Assigned WINDSTREAM OKLAHOMA, INC. 1965 MILBURN OK
2017-07-05 580-809-9XXX 9000–9999Assigned WINDSTREAM OKLAHOMA, INC. 1965 SMITHVILLE OK
2017-06-21 580-232-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C CACHE OK
2017-06-21 580-313-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C WAURIKA OK
2017-06-21 580-403-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C STRATFORD OK
2017-06-21 580-662-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C RINGLING OK
2017-06-21 580-686-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C KONAWA OK
2017-06-12 580-300-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 MARIETTA OK
2017-06-12 580-313-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 WAURIKA OK
2017-06-12 580-706-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 MANGUM OK
2017-06-12 580-741-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 MEDFORD OK
2017-06-12 580-769-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 SAYRE OK
2017-06-12 580-832-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 CORDELL OK
2017-06-12 580-896-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 COALGATE OK
2017-06-12 580-896-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C COALGATE OK
2017-06-12 580-997-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 CHEROKEE OK
2017-06-07 580-307-1XXX 1000–1999Assigned TELNYX LLC 073H PERRY OK
2017-06-07 580-789-8XXX 8000–8999Assigned TELNYX LLC 073H BLACKWELL OK
2017-06-07 580-816-6XXX 6000–6999Assigned TELNYX LLC 073H WEATHERFD 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.