NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

5 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 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
2021-05-04 618-682-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-05-04 618-682-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-05-04 618-682-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-05-04 618-682-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-05-04 618-682-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-05-04 618-682-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-05-04 618-682-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-04-30 618-373-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANITE CY IL
2021-04-30 618-373-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANITE CY IL
2021-04-29 618-739-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BROOKPORT IL
2021-04-29 618-940-4XXX 4000–4999Assigned METROPCS, INC. 5562 METROPOLIS IL
2021-04-17 618-470-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 COLUMBIA IL
2021-04-15 618-636-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E ALTON IL
2021-04-15 618-636-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E ALTON IL
2021-04-14 618-518-6XXX 6000–6999Assigned ONVOY, LLC 224C HARRISBURG IL
2021-04-14 618-680-2XXX 2000–2999Assigned ONVOY, LLC 224C O FALLON IL
2021-04-14 618-715-3XXX 3000–3999Assigned ONVOY, LLC 224C HARRISBURG IL
2021-04-14 618-871-3XXX 3000–3999Assigned ONVOY, LLC 224C ALLENDALE IL
2021-04-14 618-871-4XXX 4000–4999Assigned ONVOY, LLC 224C ALLENDALE IL
2021-04-07 618-851-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H ANNA IL
2021-04-06 618-681-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CARTERVL IL
2021-04-05 618-685-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 EDWARDSVL IL
2021-04-05 618-902-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H OLNEY IL
2021-04-02 618-680-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 O FALLON IL
2021-03-29 618-933-6XXX 6000–6999Assigned MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F WFRANKFORT IL
2021-03-26 618-260-9XXX 9000–9999Assigned TELNYX LLC 073H HOYLETON IL
2021-03-26 618-270-3XXX 3000–3999Assigned ONVOY, LLC 224C WAYNE CITY IL
2021-03-26 618-312-2XXX 2000–2999Assigned ONVOY, LLC 224C SALEM IL
2021-03-26 618-312-3XXX 3000–3999Assigned ONVOY, LLC 224C SALEM IL
2021-03-26 618-348-7XXX 7000–7999Assigned ONVOY, LLC 224C HERRICK IL
2021-03-26 618-400-2XXX 2000–2999Assigned ONVOY, LLC 224C MILLSTADT IL
2021-03-26 618-400-6XXX 6000–6999Assigned ONVOY, LLC 224C MILLSTADT IL
2021-03-26 618-422-6XXX 6000–6999Assigned ONVOY, LLC 224C MARION IL
2021-03-26 618-422-7XXX 7000–7999Assigned ONVOY, LLC 224C MARION IL
2021-03-26 618-481-6XXX 6000–6999Assigned ONVOY, LLC 224C BRIGHTON IL
2021-03-26 618-518-3XXX 3000–3999Assigned ONVOY, LLC 224C HARRISBURG IL
2021-03-26 618-518-4XXX 4000–4999Assigned ONVOY, LLC 224C HARRISBURG IL
2021-03-26 618-546-7XXX 7000–7999Assigned ONVOY, LLC 224C ROBINSON IL
2021-03-26 618-546-8XXX 8000–8999Assigned ONVOY, LLC 224C ROBINSON IL
2021-03-26 618-603-7XXX 7000–7999Assigned ONVOY, LLC 224C BENTON IL
2021-03-26 618-603-8XXX 8000–8999Assigned ONVOY, LLC 224C BENTON IL
2021-03-26 618-677-1XXX 1000–1999Assigned ONVOY, LLC 224C FAYETTEVL IL
2021-03-26 618-693-6XXX 6000–6999Assigned ONVOY, LLC 224C BETHALTO IL
2021-03-26 618-755-6XXX 6000–6999Assigned ONVOY, LLC 224C HARMONY IL
2021-03-26 618-777-3XXX 3000–3999Assigned ONVOY, LLC 224C STONEFORT IL
2021-03-26 618-936-3XXX 3000–3999Assigned ONVOY, LLC 224C SUMNER IL
2021-03-23 618-359-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-03-23 618-359-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-03-23 618-359-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-03-23 618-436-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL

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.