NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

255 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

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
NEW CINGULAR WIRELESS PCS, LLC - IL 255
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
2017-03-21 810-242-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORT HURON MI
2017-03-20 361-495-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HEBBRONVL TX
2017-03-17 479-233-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GENTRY AR
2017-03-15 402-608-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALBION NE
2017-03-15 810-432-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PORT HURON MI
2017-03-14 260-508-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALBION IN
2017-03-14 419-863-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DELPHOS OH
2017-03-14 440-370-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AMHERST OH
2017-03-14 567-808-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PAULDING OH
2017-03-14 812-902-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEDFORD IN
2017-03-13 254-216-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GATESVILLE TX
2017-03-13 361-828-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INGLESIDE TX
2017-03-13 806-440-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PAMPA TX
2017-03-10 346-254-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2017-03-10 346-254-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CYPRESS TX
2017-03-08 417-260-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON MO
2017-03-08 517-249-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2017-03-08 765-401-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CRAWFODSVL IN
2017-03-08 785-877-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTON KS
2017-03-08 913-246-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ATCHISON KS
2017-03-08 947-414-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PONTIAC MI
2017-03-07 217-730-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WINCHESTER IL
2017-03-07 331-707-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AURORA IL
2017-03-07 346-336-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOMBALL TX
2017-03-07 346-336-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TOMBALL TX
2017-03-07 430-235-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LINDL SWAN TX
2017-03-07 469-968-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEWISVILLE TX
2017-03-07 469-968-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LEWISVILLE TX
2017-03-07 630-449-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AURORA IL
2017-03-07 815-908-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FREEPORT IL
2017-03-07 903-339-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL TX
2017-03-07 903-415-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DENISON TX
2017-03-07 903-721-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 JACKSONVL TX
2017-03-07 903-904-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ATHENS TX
2017-03-07 920-866-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NEWFRANKEN WI
2017-03-07 936-590-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTER TX
2017-03-06 580-954-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALTUS OK
2017-03-06 918-530-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PRYOR OK
2017-03-03 248-791-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PONTIAC MI
2017-03-03 248-791-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PONTIAC MI
2017-03-03 317-764-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NOBLESVL IN
2017-03-03 317-764-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NOBLESVL IN
2017-03-03 317-764-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NOBLESVL IN
2017-03-03 319-528-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 DENMARK IA
2017-03-03 517-377-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2017-03-03 517-481-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2017-03-03 517-897-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LANSING MI
2017-03-03 616-207-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LOWELL MI
2017-03-03 734-318-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WYANDOTTE MI
2017-03-03 734-318-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WYANDOTTE MI

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.