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
2020-01-14 539-244-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OKMULGEE OK
2020-01-14 539-345-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GROVE OK
2019-12-23 539-238-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRISTOW OK
2019-12-23 539-238-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRISTOW OK
2019-12-23 539-238-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRISTOW OK
2019-12-23 539-238-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRISTOW OK
2019-12-23 539-238-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRISTOW OK
2019-12-10 539-235-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2019-12-10 539-235-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2019-12-03 539-235-0XXX 0000–0999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H TULSA OK
2019-11-19 539-232-4XXX 4000–4999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H WILBURTON OK
2019-11-19 539-265-1XXX 1000–1999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H SAPULPA OK
2019-11-15 539-785-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 WISTER OK
2019-11-08 539-230-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SALLISAW OK
2019-11-07 539-819-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F BARON OK
2019-10-24 539-589-3XXX 3000–3999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H SKIATOOK OK
2019-10-07 539-234-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J TAHLEQUAH OK
2019-10-02 539-237-0XXX 0000–0999Assigned UNITED STATES CELLULAR - OK 6272 STIGLER OK
2019-10-01 539-244-1XXX 1000–1999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H OKMULGEE OK
2019-09-25 539-444-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F TULSA OK
2019-09-05 539-220-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C HEAVENER OK
2019-09-05 539-232-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WILBURTON OK
2019-09-03 539-236-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C INOLA OK
2019-08-27 539-235-1XXX 1000–1999Assigned EXIANT COMMUNICATIONS LLC 114J TULSA OK
2019-08-22 539-213-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 CAMERON OK
2019-08-20 539-228-0XXX 0000–0999Assigned CSC WIRELESS, LLC 425J GROVE OK
2019-08-15 539-589-2XXX 2000–2999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H SKIATOOK OK
2019-07-29 539-234-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J TAHLEQUAH OK
2019-07-29 539-234-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J TAHLEQUAH OK
2019-07-29 539-234-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J TAHLEQUAH OK
2019-07-29 539-234-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J TAHLEQUAH OK
2019-07-12 539-333-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 AFTON OK
2019-07-10 539-325-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C TULSA OK
2019-06-14 539-222-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F TULSA OK
2019-06-14 539-525-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F TULSA OK
2019-05-15 539-666-0XXX 0000–0999Assigned ONVOY, LLC - OK 409F TULSA OK
2019-05-15 539-666-1XXX 1000–1999Assigned ONVOY, LLC - OK 409F TULSA OK
2019-05-15 539-666-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F TULSA OK
2019-05-15 539-666-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F TULSA OK
2019-05-10 539-265-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F SAPULPA OK
2019-05-08 539-204-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BRISTOW OK
2019-05-01 539-202-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F TULSA OK
2019-05-01 539-202-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F TULSA OK
2019-05-01 539-222-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OK 119F TULSA OK
2019-04-24 539-424-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C TULSA OK
2019-04-15 539-230-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SALLISAW OK
2019-04-15 539-230-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SALLISAW OK
2019-04-15 539-230-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SALLISAW OK
2019-04-15 539-230-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SALLISAW OK
2019-04-10 539-430-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 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.