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
2026-03-06 580-570-2XXX 2000–2999Assigned IP HORIZON LLC 515J DURANT OK
2026-03-06 580-575-1XXX 1000–1999Assigned IP HORIZON LLC 515J ELDORADO OK
2026-03-06 580-596-5XXX 5000–5999Assigned IP HORIZON LLC 515J CHEROKEE OK
2026-03-06 580-605-0XXX 0000–0999Assigned IP HORIZON LLC 515J DUNCAN OK
2026-03-06 580-629-1XXX 1000–1999Assigned IP HORIZON LLC 515J COALGATE OK
2026-03-06 580-685-2XXX 2000–2999Assigned IP HORIZON LLC 515J ARDMORE OK
2026-03-06 580-732-3XXX 3000–3999Assigned IP HORIZON LLC 515J ALVA OK
2026-03-06 580-833-3XXX 3000–3999Assigned IP HORIZON LLC 515J BLACKWELL OK
2026-03-06 580-857-8XXX 8000–8999Assigned IP HORIZON LLC 515J ALLEN OK
2026-03-06 580-998-0XXX 0000–0999Assigned IP HORIZON LLC 515J ANTLERS OK
2026-03-03 580-457-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAWTON OK
2026-03-03 580-457-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAWTON OK
2026-02-20 580-324-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 ENID OK
2026-02-20 580-605-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DUNCAN OK
2026-02-20 580-605-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DUNCAN OK
2026-02-19 580-305-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J FREDERICK OK
2026-02-19 580-449-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J CHEYENNE OK
2026-02-19 580-562-5XXX 5000–5999Assigned TERRA NOVA TELECOM INC. 145J BURNS FLAT OK
2026-01-13 580-732-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J ALVA OK
2026-01-13 580-998-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J ANTLERS OK
2025-12-31 580-998-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ANTLERS OK
2025-12-12 580-500-5XXX 5000–5999Assigned TERRA NOVA TELECOM INC. 145J CLINTON OK
2025-12-11 580-330-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEATHERFD OK
2025-12-11 580-502-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WILSON OK
2025-12-05 580-692-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ARDMORE OK
2025-11-26 580-354-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAWTON OK
2025-11-26 580-457-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAWTON OK
2025-10-29 580-333-3XXX 3000–3999Assigned TERRA NOVA TELECOM INC. 145J COMANCHE OK
2025-10-27 580-750-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 MEDFORD OK
2025-10-17 580-359-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARDMORE OK
2025-10-16 580-282-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARIETTA OK
2025-09-23 580-550-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J WALTERS OK
2025-09-17 580-636-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALTUS OK
2025-09-12 580-356-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 ENID OK
2025-09-10 580-469-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAYRE OK
2025-09-10 580-603-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J ENID OK
2025-09-10 580-930-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SULPHUR OK
2025-09-04 580-495-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA OK
2025-09-04 580-645-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ADA OK
2025-08-06 580-640-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J TISHOMINGO OK
2025-08-05 580-729-4XXX 4000–4999Assigned TERRA NOVA TELECOM INC. 145J SAYRE OK
2025-08-05 580-794-3XXX 3000–3999Assigned TERRA NOVA TELECOM INC. 145J FAIRVIEW OK
2025-08-05 580-826-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARDMORE OK
2025-08-05 580-884-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J CHEROKEE OK
2025-07-16 580-570-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DURANT OK
2025-07-16 580-570-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DURANT OK
2025-07-16 580-990-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DUNCAN OK
2025-07-16 580-990-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DUNCAN OK
2025-07-09 580-202-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CORDELL OK
2025-07-09 580-247-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DAVIS 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.