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
2023-09-08 618-957-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HERRIN IL
2023-09-07 618-879-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-09-07 618-879-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-09-07 618-879-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-09-07 618-879-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 OLNEY IL
2023-09-01 618-663-6XXX 6000–6999Assigned ONVOY, LLC 224C BENTON IL
2023-08-25 618-573-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2023-08-25 618-573-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2023-08-25 618-573-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2023-08-25 618-573-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVILLE IL
2023-08-22 618-405-9XXX 9000–9999Assigned ONVOY, LLC 224C HECKER IL
2023-08-22 618-566-1XXX 1000–1999Assigned ONVOY, LLC 224C MASCOUTAH IL
2023-08-22 618-739-2XXX 2000–2999Assigned ONVOY, LLC 224C BROOKPORT IL
2023-08-22 618-885-8XXX 8000–8999Assigned ONVOY, LLC 224C DOW IL
2023-08-22 618-991-2XXX 2000–2999Assigned ONVOY, LLC 224C RAMSEY IL
2023-08-16 618-990-2XXX 2000–2999Assigned ONVOY, LLC 224C WOOD RIVER IL
2023-08-15 618-476-0XXX 0000–0999Assigned ONVOY, LLC 224C MILLSTADT IL
2023-08-15 618-508-0XXX 0000–0999Assigned ONVOY, LLC 224C FLORA IL
2023-08-15 618-573-0XXX 0000–0999Assigned ONVOY, LLC 224C BELLEVILLE IL
2023-08-15 618-680-9XXX 9000–9999Assigned ONVOY, LLC 224C O FALLON IL
2023-08-15 618-725-0XXX 0000–0999Assigned ONVOY, LLC 224C VANDALIA IL
2023-08-15 618-815-9XXX 9000–9999Assigned ONVOY, LLC 224C E ST LOUIS IL
2023-08-15 618-953-0XXX 0000–0999Assigned ONVOY, LLC 224C CENTRALIA IL
2023-08-15 618-985-0XXX 0000–0999Assigned ONVOY, LLC 224C CARTERVL IL
2023-08-11 618-986-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WATERLOO IL
2023-08-10 618-981-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANITE CY IL
2023-08-09 618-373-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANITE CY IL
2023-08-05 618-561-7XXX 7000–7999Assigned NUSO, LLC 732J CARBONDALE IL
2023-08-05 618-666-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLLINSVL IL
2023-08-04 618-412-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-412-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-503-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-503-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-503-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-503-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-519-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-519-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-519-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-519-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-519-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-519-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-519-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-605-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-605-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-605-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-605-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-605-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CARBONDALE IL
2023-08-04 618-908-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ALTON IL
2023-08-01 618-361-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 PINCKNEYVL IL
2023-07-28 618-573-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 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.