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
2021-07-16 539-242-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F TULSA OK
2021-07-16 539-242-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F TULSA OK
2021-07-16 539-242-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F TULSA OK
2021-07-16 539-242-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F TULSA OK
2021-07-16 539-242-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F TULSA OK
2021-07-16 539-529-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARTLESVL OK
2021-07-16 539-529-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BARTLESVL OK
2021-06-30 539-242-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 TULSA OK
2021-06-30 539-250-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BROKENARRW OK
2021-06-30 539-250-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BROKENARRW OK
2021-06-30 539-251-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PRYOR OK
2021-06-30 539-251-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PRYOR OK
2021-06-30 539-251-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PRYOR OK
2021-06-30 539-348-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J SO CHETOPA OK
2021-06-29 539-210-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PRYOR OK
2021-06-29 539-210-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PRYOR OK
2021-06-29 539-252-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BROKENARRW OK
2021-06-29 539-252-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BROKENARRW OK
2021-06-29 539-252-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BROKENARRW OK
2021-06-28 539-254-9XXX 9000–9999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H SPIRO OK
2021-06-28 539-269-0XXX 0000–0999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H EUFAULA OK
2021-06-28 539-600-7XXX 7000–7999Assigned PEERLESS NETWORK OF OKLAHOMA, LLC - OK 384H HENRYETTA OK
2021-06-23 539-249-0XXX 0000–0999Assigned TELNYX LLC 073H SALLISAW OK
2021-06-17 539-203-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F STROUD OK
2021-06-17 539-240-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2021-06-17 539-240-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2021-06-17 539-240-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2021-06-17 539-240-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2021-06-17 539-240-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TULSA OK
2021-06-17 539-248-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F BARNSDALL OK
2021-06-17 539-252-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F BROKENARRW OK
2021-06-17 539-252-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F BROKENARRW OK
2021-06-17 539-252-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F BROKENARRW OK
2021-06-17 539-252-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F BROKENARRW OK
2021-06-17 539-253-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F QUAPAW OK
2021-06-17 539-254-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F SPIRO OK
2021-06-17 539-254-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F SPIRO OK
2021-06-17 539-266-5XXX 5000–5999Assigned VONAGE AMERICA LLC 197D SALLISAW OK
2021-06-08 539-585-0XXX 0000–0999Assigned COMMIO, LLC 939H AVANT OK
2021-06-08 539-585-1XXX 1000–1999Assigned COMMIO, LLC 939H AVANT OK
2021-06-08 539-585-2XXX 2000–2999Assigned COMMIO, LLC 939H AVANT OK
2021-06-08 539-585-6XXX 6000–6999Assigned COMMIO, LLC 939H AVANT OK
2021-06-07 539-257-5XXX 5000–5999Assigned TON80 COMMUNICATIONS, LLC 516J CLEVELAND OK
2021-06-01 539-877-2XXX 2000–2999Assigned TON80 COMMUNICATIONS, LLC 516J HARTSHORNE OK
2021-05-28 539-209-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F WAGONER OK
2021-05-28 539-231-1XXX 1000–1999Assigned ONVOY, LLC - OK 409F DEWEY OK
2021-05-28 539-529-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C BARTLESVL OK
2021-05-28 539-577-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MIAMI OK
2021-05-28 539-577-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MIAMI OK
2021-05-28 539-577-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MIAMI 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.