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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2016-09-30 580-297-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F ENID OK
2016-09-30 580-297-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F ENID OK
2016-09-30 580-422-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F BILLINGS OK
2016-09-30 580-422-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F BILLINGS OK
2016-09-30 580-498-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F KONAWA OK
2016-09-30 580-498-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F KONAWA OK
2016-09-26 580-634-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 DURANT OK
2016-09-21 580-991-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TONKAWA OK
2016-09-19 580-217-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 WILSON OK
2016-09-16 580-308-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F TONKAWA OK
2016-08-26 580-340-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARDMORE OK
2016-08-26 580-340-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARDMORE OK
2016-08-26 580-771-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2016-08-26 580-771-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2016-08-22 580-243-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELK CITY OK
2016-08-22 580-243-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ELK CITY OK
2016-08-18 580-495-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F ADA OK
2016-08-18 580-495-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F ADA OK
2016-08-12 580-791-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WATONGA OK
2016-08-09 580-470-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DUNCAN OK
2016-08-04 580-251-6XXX 6000–6999Assigned SOUTHWESTERN BELL 9533 DUNCAN OK
2016-08-02 580-441-9XXX 9000–9999Assigned WINDSTREAM OKLAHOMA, INC. 1965 ELMORECITY OK
2016-07-28 580-231-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ENID OK
2016-07-27 580-972-9XXX 9000–9999Assigned WINDSTREAM OKLAHOMA, INC. 1965 STERLING OK
2016-07-19 580-236-8XXX 8000–8999Assigned UNITED STATES CELLULAR - OK 6272 BROKEN BOW OK
2016-07-13 580-495-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C ADA OK
2016-07-13 580-671-9XXX 9000–9999Assigned WINDSTREAM OKLAHOMA, INC. 1965 MT VIEW OK
2016-07-13 580-961-9XXX 9000–9999Assigned WINDSTREAM OKLAHOMA, INC. 1965 STRINGTOWN OK
2016-07-13 580-962-9XXX 9000–9999Assigned WINDSTREAM OKLAHOMA, INC. 1965 BURNS FLAT OK
2016-06-30 580-905-9XXX 9000–9999Assigned WINDSTREAM OKLAHOMA, INC. 1965 MILL CREEK OK
2016-06-30 580-960-9XXX 9000–9999Assigned WINDSTREAM OKLAHOMA, INC. 1965 CORN OK
2016-06-27 580-207-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ATOKA OK
2016-06-17 580-498-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F KONAWA OK
2016-06-09 580-303-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F ELK CITY OK
2016-06-09 580-303-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F ELK CITY OK
2016-06-09 580-303-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F ELK CITY OK
2016-06-09 580-324-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F ENID OK
2016-06-09 580-324-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F ENID OK
2016-06-09 580-324-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F ENID OK
2016-06-09 580-376-1XXX 1000–1999Assigned ONVOY, LLC - OK 409F IDABEL OK
2016-06-09 580-376-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F IDABEL OK
2016-06-09 580-376-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F IDABEL OK
2016-06-09 580-406-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F HUGO OK
2016-06-09 580-406-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F HUGO OK
2016-06-09 580-406-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F HUGO OK
2016-06-09 580-530-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F HOBART OK
2016-06-09 580-530-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F HOBART OK
2016-06-09 580-530-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F HOBART OK
2016-06-09 580-634-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F DURANT OK
2016-06-09 580-634-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F DURANT 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.