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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2020-06-16 539-328-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F COLCORD OK
2020-06-16 539-333-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F AFTON OK
2020-06-16 539-333-9XXX 9000–9999Assigned ONVOY, LLC - OK 409F AFTON OK
2020-06-16 539-352-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F MOFFETT OK
2020-06-16 539-352-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F MOFFETT OK
2020-06-08 539-209-0XXX 0000–0999Assigned TELNYX LLC 073H WAGONER OK
2020-06-08 539-221-0XXX 0000–0999Assigned TELNYX LLC 073H HASKELL OK
2020-06-08 539-500-2XXX 2000–2999Assigned TELNYX LLC 073H KIEFER OK
2020-06-08 539-866-0XXX 0000–0999Assigned TELNYX LLC 073H OILTON OK
2020-06-01 539-218-4XXX 4000–4999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H MUSKOGEE OK
2020-05-29 539-333-6XXX 6000–6999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H AFTON OK
2020-05-04 539-218-0XXX 0000–0999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H MUSKOGEE OK
2020-04-27 539-231-0XXX 0000–0999Assigned METROPCS, INC. 5562 DEWEY OK
2020-04-27 539-234-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TAHLEQUAH OK
2020-04-27 539-325-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2020-04-21 539-866-9XXX 9000–9999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H OILTON OK
2020-04-20 539-500-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F KIEFER OK
2020-04-17 539-299-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKEMAH OK
2020-04-17 539-299-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKEMAH OK
2020-03-25 539-325-3XXX 3000–3999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H TULSA OK
2020-03-24 539-235-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2020-03-24 539-292-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2020-03-24 539-292-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2020-03-24 539-325-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2020-03-24 539-325-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2020-03-09 539-367-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BROKENARRW OK
2020-03-09 539-367-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BROKENARRW OK
2020-03-09 539-367-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BROKENARRW OK
2020-03-09 539-367-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BROKENARRW OK
2020-02-27 539-235-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2020-02-27 539-235-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2020-02-21 539-244-9XXX 9000–9999Assigned CROSS CABLE TELEVISION, LLC - OK 809H OKMULGEE OK
2020-02-21 539-449-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F PORTER OK
2020-02-21 539-538-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F ASHLAND OK
2020-02-19 539-635-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F SAVANNA OK
2020-02-13 539-585-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F AVANT OK
2020-02-13 539-622-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F BOYNTON OK
2020-02-12 539-337-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F RAMONA OK
2020-02-11 539-549-9XXX 9000–9999Assigned HD CARRIER LLC 321J TULSA OK
2020-02-07 539-201-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F KIOWA OK
2020-02-05 539-489-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F SNUGHARBOR OK
2020-02-04 539-214-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F FAIRFAX OK
2020-01-29 539-629-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2020-01-29 539-629-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2020-01-29 539-629-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2020-01-29 539-629-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2020-01-29 539-629-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2020-01-29 539-629-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TULSA OK
2020-01-14 539-210-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRYOR OK
2020-01-14 539-244-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKMULGEE 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.