NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

9 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 539
NEW CINGULAR WIRELESS PCS, LLC - IL 4
ONVOY, LLC - OK 3
TELEPORT COMMUNICATIONS AMERICA OK - LLC 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
2026-03-05 539-237-4XXX 4000–4999Assigned IP HORIZON LLC 515J STIGLER OK
2026-03-05 539-295-2XXX 2000–2999Assigned TERRA NOVA TELECOM INC. 145J TAHLEQUAH OK
2026-02-20 539-252-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F BROKENARRW OK
2026-02-10 539-237-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 STIGLER OK
2026-01-27 539-372-0XXX 0000–0999Assigned ONVOY, LLC - OK 409F CLAREMORE OK
2026-01-06 539-372-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J CLAREMORE OK
2025-12-24 539-370-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2025-12-24 539-370-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2025-12-24 539-370-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2025-12-24 539-370-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2025-12-24 539-370-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2025-12-24 539-370-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2025-12-24 539-370-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2025-12-24 539-370-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2025-12-24 539-370-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2025-12-17 539-371-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 DISNEY OK
2025-12-16 539-370-0XXX 0000–0999Assigned WAVENATION, LLC 700J TULSA OK
2025-12-12 539-293-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F CUSHING OK
2025-12-11 539-307-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKMULGEE OK
2025-11-26 539-249-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SALLISAW OK
2025-11-19 539-304-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GROVE OK
2025-10-24 539-296-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J BROKENARRW OK
2025-10-22 539-310-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WILBURTON OK
2025-10-17 539-388-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2025-10-17 539-388-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2025-10-17 539-388-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2025-10-17 539-388-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2025-10-17 539-388-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2025-10-17 539-388-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2025-10-16 539-369-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2025-10-07 539-353-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J WAGONER OK
2025-09-18 539-306-9XXX 9000–9999Assigned ONVOY, LLC - OK 409F MCALESTER OK
2025-09-16 539-368-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2025-08-28 539-315-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PRYOR OK
2025-08-13 539-369-0XXX 0000–0999Assigned BOOST SUBSCRIBERCO L.L.C. 490J TULSA OK
2025-07-16 539-306-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALESTER OK
2025-07-16 539-306-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALESTER OK
2025-07-16 539-315-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRYOR OK
2025-07-16 539-315-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRYOR OK
2025-07-16 539-354-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRISTOW OK
2025-07-16 539-354-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRISTOW OK
2025-07-16 539-368-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARTLESVL OK
2025-07-16 539-368-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARTLESVL OK
2025-07-09 539-231-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DEWEY OK
2025-07-09 539-310-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WILBURTON OK
2025-07-08 539-368-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2025-07-08 539-368-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2025-06-30 539-239-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MUSKOGEE OK
2025-06-30 539-246-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TAHLEQUAH OK
2025-06-30 539-262-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MUSKOGEE 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.