NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 618
NEW CINGULAR WIRELESS PCS, LLC - IL 2
EXIANT COMMUNICATIONS LLC 2
AHOI LLC 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
2023-05-31 618-657-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CYPRESS IL
2023-05-31 618-674-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H CARRIERSML IL
2023-05-31 618-733-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H CARTERVL IL
2023-05-31 618-814-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H EWING IL
2023-05-31 618-845-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H ULLIN IL
2023-05-31 618-864-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H HARRISBURG IL
2023-05-31 618-867-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H DE SOTO IL
2023-05-31 618-933-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H WFRANKFORT IL
2023-05-31 618-940-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H METROPOLIS IL
2023-05-31 618-983-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H JOHNSTONCY IL
2023-05-31 618-984-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H ROYALTON IL
2023-05-31 618-996-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H CREAL SPG IL
2023-05-30 618-956-7XXX 7000–7999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CARTERVL IL
2023-05-10 618-878-4XXX 4000–4999Assigned ONVOY, LLC 224C MT CARMEL IL
2023-05-10 618-901-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-05-10 618-901-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-05-10 618-901-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-05-10 618-901-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-05-05 618-426-7XXX 7000–7999Assigned ONVOY, LLC 224C AVA IL
2023-05-05 618-442-3XXX 3000–3999Assigned ONVOY, LLC 224C PARKERSBG IL
2023-05-03 618-941-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J ALBION IL
2023-05-01 618-318-4XXX 4000–4999Assigned ONVOY, LLC 224C PINCKNEYVL IL
2023-05-01 618-386-2XXX 2000–2999Assigned ONVOY, LLC 224C HURST IL
2023-05-01 618-403-2XXX 2000–2999Assigned ONVOY, LLC 224C FLORA IL
2023-05-01 618-412-2XXX 2000–2999Assigned ONVOY, LLC 224C CARBONDALE IL
2023-05-01 618-815-4XXX 4000–4999Assigned ONVOY, LLC 224C E ST LOUIS IL
2023-04-28 618-331-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-04-28 618-331-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-04-28 618-331-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-04-28 618-908-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALTON IL
2023-04-28 618-916-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HERRIN IL
2023-04-28 618-916-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HERRIN IL
2023-04-28 618-916-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HERRIN IL
2023-04-28 618-916-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HERRIN IL
2023-04-28 618-916-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HERRIN IL
2023-04-28 618-916-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HERRIN IL
2023-04-19 618-873-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2023-04-19 618-873-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2023-04-18 618-354-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-04-18 618-354-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-04-18 618-354-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-04-18 618-354-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-04-18 618-388-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-04-18 618-388-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-04-18 618-388-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-04-18 618-388-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-04-18 618-393-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-04-18 618-393-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-04-14 618-680-4XXX 4000–4999Assigned ONVOY, LLC 224C O FALLON IL
2023-04-14 618-873-4XXX 4000–4999Assigned ONVOY, LLC 224C BELLEVILLE IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.