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
2021-05-26 539-255-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J PICHER OK
2021-05-25 539-262-1XXX 1000–1999Assigned STRATUS NETWORKS 495J MUSKOGEE OK
2021-05-18 539-238-4XXX 4000–4999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H BRISTOW OK
2021-05-17 539-246-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J TAHLEQUAH OK
2021-05-16 539-786-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J PRUE OK
2021-05-04 539-208-3XXX 3000–3999Assigned TELNYX LLC 073H OWASSO OK
2021-05-04 539-737-7XXX 7000–7999Assigned TON80 COMMUNICATIONS, LLC 516J WILBURTON OK
2021-05-04 539-895-8XXX 8000–8999Assigned TWILIO INTERNATIONAL, INC. 506J TULSA OK
2021-04-29 539-200-1XXX 1000–1999Assigned ONVOY, LLC - OK 409F BARNSDALL OK
2021-04-29 539-231-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F DEWEY OK
2021-04-29 539-255-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F PICHER OK
2021-04-29 539-328-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F COLCORD OK
2021-04-29 539-866-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F OILTON OK
2021-04-20 539-867-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 TULSA OK
2021-04-16 539-910-0XXX 0000–0999Assigned ONVOY, LLC - OK 409F TULSA OK
2021-04-16 539-995-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALESTER OK
2021-04-16 539-995-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALESTER OK
2021-04-16 539-995-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MCALESTER OK
2021-04-14 539-246-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TAHLEQUAH OK
2021-04-14 539-901-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H TULSA OK
2021-04-13 539-234-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TAHLEQUAH OK
2021-04-01 539-239-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C MUSKOGEE OK
2021-03-31 539-257-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F CLEVELAND OK
2021-03-30 539-209-1XXX 1000–1999Assigned ONVOY, LLC - OK 409F WAGONER OK
2021-03-30 539-231-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F DEWEY OK
2021-03-30 539-328-0XXX 0000–0999Assigned ONVOY, LLC - OK 409F COLCORD OK
2021-03-30 539-866-1XXX 1000–1999Assigned ONVOY, LLC - OK 409F OILTON OK
2021-03-22 539-240-1XXX 1000–1999Assigned STRATUS NETWORKS 495J TULSA OK
2021-03-15 539-529-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 BARTLESVL OK
2021-03-08 539-867-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2021-03-08 539-900-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2021-03-08 539-900-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2021-03-08 539-900-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2021-03-08 539-900-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2021-03-03 539-208-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F OWASSO OK
2021-03-03 539-224-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F WMAYSVILLE OK
2021-03-03 539-224-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F WMAYSVILLE OK
2021-03-03 539-243-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F WATTS OK
2021-03-03 539-243-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F WATTS OK
2021-03-03 539-245-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F POCOLA OK
2021-03-03 539-245-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F POCOLA OK
2021-03-03 539-352-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F MOFFETT OK
2021-03-03 539-352-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F MOFFETT OK
2021-03-02 539-242-1XXX 1000–1999Assigned IP HORIZON LLC 515J TULSA OK
2021-03-02 539-593-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F TULSA OK
2021-02-26 539-217-7XXX 7000–7999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H SAND SPG OK
2021-02-26 539-241-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 CHOUTEAU OK
2021-02-25 539-476-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F TULSA OK
2021-02-25 539-476-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F TULSA OK
2021-02-25 539-476-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F TULSA 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.