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
2013-01-24 580-228-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C WAURIKA OK
2013-01-24 580-387-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C TISHOMINGO OK
2013-01-24 580-672-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C MADILL OK
2013-01-24 580-759-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C STRATFORD OK
2013-01-17 580-721-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C MARLOW OK
2012-12-27 580-634-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 DURANT OK
2012-12-21 580-560-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 DUNCAN OK
2012-12-18 580-382-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C PONCA CITY OK
2012-12-12 580-364-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 ATOKA OK
2012-12-12 580-377-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 WOODWARD OK
2012-11-09 580-754-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 GUYMON OK
2012-11-09 580-786-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C DUNCAN OK
2012-11-09 580-982-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 ANTLERS OK
2012-10-31 580-231-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ENID OK
2012-10-10 580-418-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 FREDERICK OK
2012-09-28 580-312-6XXX 6000–6999Assigned PINE TELEPHONE COMPANY DBA PINE CELL PHONES, INC. 235C BROKEN BOW OK
2012-09-28 580-312-7XXX 7000–7999Assigned PINE TELEPHONE COMPANY DBA PINE CELL PHONES, INC. 235C BROKEN BOW OK
2012-09-24 580-236-7XXX 7000–7999Assigned UNITED STATES CELLULAR - OK 6272 BROKEN BOW OK
2012-08-09 580-377-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOODWARD OK
2012-08-09 580-377-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOODWARD OK
2012-08-01 580-453-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 ADA OK
2012-07-30 580-670-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C BLACKWELL OK
2012-07-27 580-352-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F PONCA CITY OK
2012-07-12 580-665-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA OK
2012-07-11 580-951-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 LAWTON OK
2012-06-26 580-665-0XXX 0000–0999Assigned UNITED STATES CELLULAR - OK 6272 ADA OK
2012-06-19 580-236-6XXX 6000–6999Assigned UNITED STATES CELLULAR - OK 6272 BROKEN BOW OK
2012-06-15 580-743-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HUGO OK
2012-06-06 580-374-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELK CITY OK
2012-06-06 580-798-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 ARDMORE OK
2012-06-06 580-798-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 ARDMORE OK
2012-06-06 580-798-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 ARDMORE OK
2012-05-23 580-231-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ENID OK
2012-05-08 580-729-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAYRE OK
2012-05-04 580-318-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 ALTUS OK
2012-05-04 580-579-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 DURANT OK
2012-05-04 580-579-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 DURANT OK
2012-04-13 580-353-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAWTON OK
2012-03-27 580-280-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2012-03-27 580-456-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C ROFF OK
2012-03-27 580-540-9XXX 9000–9999Assigned CSC VOICE, LLC 612K ENID OK
2012-03-19 580-340-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARDMORE OK
2012-03-19 580-650-2XXX 2000–2999Assigned CSC VOICE, LLC 612K WEATHERFD OK
2012-03-09 580-216-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOODWARD OK
2012-02-28 580-277-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARDMORE OK
2012-02-22 580-514-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2012-02-22 580-514-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2012-02-17 580-491-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PONCA CITY OK
2012-02-09 580-280-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2012-01-27 580-686-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 KONAWA 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.