NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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 918
NEW CINGULAR WIRELESS PCS, LLC - IL 5
BOOST SUBSCRIBERCO L.L.C. 1
BANDWIDTH.COM CLEC, LLC - OK 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
2016-11-11 918-907-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2016-11-08 918-276-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C VINITA OK
2016-11-07 918-319-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C HENRYETTA OK
2016-10-19 918-957-0XXX 0000–0999Assigned METROPCS, INC. 5562 BROKENARRW OK
2016-10-13 918-390-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - OK 5257 SALINA OK
2016-10-05 918-824-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 PRYOR OK
2016-10-04 918-302-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F MCALESTER OK
2016-10-03 918-438-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F TULSA OK
2016-09-30 918-490-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA OK - LLC 530C EUFAULA OK
2016-09-29 918-584-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J TULSA OK
2016-09-29 918-604-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 7258 PAWHUSKA OK
2016-09-19 918-203-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F FORTGIBSON OK
2016-09-19 918-203-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F FORTGIBSON OK
2016-09-19 918-212-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F OWASSO OK
2016-09-19 918-238-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F MIAMI OK
2016-09-19 918-238-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F MIAMI OK
2016-09-19 918-248-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F SAPULPA OK
2016-09-19 918-248-9XXX 9000–9999Assigned ONVOY, LLC - OK 409F SAPULPA OK
2016-09-19 918-265-0XXX 0000–0999Assigned ONVOY, LLC - OK 409F BOKOSHE OK
2016-09-19 918-265-1XXX 1000–1999Assigned ONVOY, LLC - OK 409F BOKOSHE OK
2016-09-19 918-268-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F HENRYETTA OK
2016-09-19 918-268-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F HENRYETTA OK
2016-09-19 918-276-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F VINITA OK
2016-09-19 918-276-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F VINITA OK
2016-09-19 918-285-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F CUSHING OK
2016-09-19 918-285-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F CUSHING OK
2016-09-19 918-300-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F TALIHINA OK
2016-09-19 918-300-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F TALIHINA OK
2016-09-19 918-303-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F PAWNEE OK
2016-09-19 918-303-5XXX 5000–5999Assigned ONVOY, LLC - OK 409F PAWNEE OK
2016-09-19 918-308-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F HARTSHORNE OK
2016-09-19 918-308-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F HARTSHORNE OK
2016-09-19 918-310-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F MUSKOGEE OK
2016-09-19 918-321-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F KIEFER OK
2016-09-19 918-321-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F KIEFER OK
2016-09-19 918-324-4XXX 4000–4999Assigned ONVOY, LLC - OK 409F DEPEW OK
2016-09-19 918-324-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F DEPEW OK
2016-09-19 918-328-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F RALSTON OK
2016-09-19 918-351-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F MUSKOGEE OK
2016-09-19 918-372-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F RIPLEY OK
2016-09-19 918-372-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F RIPLEY OK
2016-09-19 918-380-0XXX 0000–0999Assigned ONVOY, LLC - OK 409F BRAGGS OK
2016-09-19 918-380-1XXX 1000–1999Assigned ONVOY, LLC - OK 409F BRAGGS OK
2016-09-19 918-387-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F YALE OK
2016-09-19 918-387-8XXX 8000–8999Assigned ONVOY, LLC - OK 409F YALE OK
2016-09-19 918-393-2XXX 2000–2999Assigned ONVOY, LLC - OK 409F MULDROW OK
2016-09-19 918-393-3XXX 3000–3999Assigned ONVOY, LLC - OK 409F MULDROW OK
2016-09-19 918-416-6XXX 6000–6999Assigned ONVOY, LLC - OK 409F CATOOSA OK
2016-09-19 918-416-7XXX 7000–7999Assigned ONVOY, LLC - OK 409F CATOOSA OK
2016-09-19 918-419-0XXX 0000–0999Assigned ONVOY, LLC - OK 409F SAND SPG 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.