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
2021-02-25 539-476-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F TULSA OK
2021-02-25 539-476-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F TULSA OK
2021-02-25 539-476-9XXX 9000–9999Assigned ONVOY, LLC - OK 409F TULSA OK
2021-02-23 539-238-0XXX 0000–0999Assigned TELNYX LLC 073H BRISTOW OK
2021-02-23 539-476-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 TULSA OK
2021-02-11 539-476-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J TULSA OK
2021-02-05 539-348-0XXX 0000–0999Assigned TELNYX LLC 073H SO CHETOPA OK
2021-02-05 539-529-2XXX 2000–2999Assigned TELNYX LLC 073H BARTLESVL OK
2021-02-05 539-577-0XXX 0000–0999Assigned TELNYX LLC 073H MIAMI OK
2021-02-03 539-207-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F CHELSEA OK
2021-02-03 539-207-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F CHELSEA OK
2021-02-03 539-217-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F SAND SPG OK
2021-02-03 539-217-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F SAND SPG OK
2021-02-03 539-228-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F GROVE OK
2021-02-03 539-228-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F GROVE OK
2021-02-03 539-238-1XXX 1000–1999Assigned ONVOY, LLC - OK 409F BRISTOW OK
2021-02-03 539-238-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F BRISTOW OK
2021-02-03 539-244-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F OKMULGEE OK
2021-02-03 539-244-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F OKMULGEE OK
2021-02-03 539-299-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F OKEMAH OK
2021-02-03 539-299-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F OKEMAH OK
2021-02-03 539-305-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F KETCHUM OK
2021-02-03 539-305-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F KETCHUM OK
2021-02-03 539-321-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F MORRIS OK
2021-02-03 539-321-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F MORRIS OK
2021-02-03 539-337-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F RAMONA OK
2021-02-03 539-337-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F RAMONA OK
2021-02-03 539-348-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F SO CHETOPA OK
2021-02-03 539-348-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F SO CHETOPA OK
2021-02-03 539-449-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F PORTER OK
2021-02-03 539-449-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F PORTER OK
2021-02-03 539-465-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F AFTON OK
2021-02-03 539-465-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F AFTON OK
2021-02-03 539-489-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F SNUGHARBOR OK
2021-02-03 539-489-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F SNUGHARBOR OK
2021-02-03 539-500-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F KIEFER OK
2021-02-03 539-500-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F KIEFER OK
2021-02-03 539-585-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F AVANT OK
2021-02-03 539-585-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F AVANT OK
2021-02-03 539-622-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F BOYNTON OK
2021-02-03 539-622-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F BOYNTON OK
2021-02-03 539-877-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F HARTSHORNE OK
2021-02-03 539-877-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F HARTSHORNE OK
2021-01-30 539-239-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F MUSKOGEE OK
2021-01-30 539-239-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F MUSKOGEE OK
2021-01-30 539-239-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F MUSKOGEE OK
2021-01-25 539-200-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F BARNSDALL OK
2021-01-25 539-200-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F BARNSDALL OK
2021-01-25 539-214-1XXX 1000–1999Assigned ONVOY, LLC - OK 409F FAIRFAX OK
2021-01-25 539-244-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 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.