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
2021-03-23 618-436-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-03-23 618-436-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-03-23 618-591-5XXX 5000–5999Assigned ONVOY, LLC 224C ELDORADO IL
2021-03-23 618-704-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VANDALIA IL
2021-03-23 618-718-8XXX 8000–8999Assigned ONVOY, LLC 224C ALBION IL
2021-03-16 618-631-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2021-03-16 618-631-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 COLLINSVL IL
2021-03-11 618-298-9XXX 9000–9999Assigned ONVOY, LLC 224C BELLMONT IL
2021-03-11 618-442-4XXX 4000–4999Assigned ONVOY, LLC 224C PARKERSBG IL
2021-03-11 618-454-4XXX 4000–4999Assigned ONVOY, LLC 224C OBLONG IL
2021-03-11 618-455-5XXX 5000–5999Assigned ONVOY, LLC 224C WILLOWHILL IL
2021-03-11 618-456-7XXX 7000–7999Assigned ONVOY, LLC 224C WEST SALEM IL
2021-03-11 618-557-5XXX 5000–5999Assigned ONVOY, LLC 224C HARDINVL IL
2021-03-11 618-569-8XXX 8000–8999Assigned ONVOY, LLC 224C ANNAPOLIS IL
2021-03-11 618-586-7XXX 7000–7999Assigned ONVOY, LLC 224C PALESTINE IL
2021-03-11 618-676-8XXX 8000–8999Assigned ONVOY, LLC 224C CLAY CITY IL
2021-03-11 618-689-6XXX 6000–6999Assigned ONVOY, LLC 224C SAILOR SPG IL
2021-03-11 618-723-7XXX 7000–7999Assigned ONVOY, LLC 224C NOBLE IL
2021-03-11 618-752-8XXX 8000–8999Assigned ONVOY, LLC 224C WENDELIN IL
2021-03-11 618-770-7XXX 7000–7999Assigned ONVOY, LLC 224C HUTSONVL IL
2021-03-11 618-793-4XXX 4000–4999Assigned ONVOY, LLC 224C ROSE HILL IL
2021-03-11 618-863-8XXX 8000–8999Assigned ONVOY, LLC 224C CALHOUN IL
2021-03-11 618-869-8XXX 8000–8999Assigned ONVOY, LLC 224C CLAREMONT IL
2021-03-11 618-878-1XXX 1000–1999Assigned ONVOY, LLC 224C MT CARMEL IL
2021-03-11 618-878-2XXX 2000–2999Assigned ONVOY, LLC 224C MT CARMEL IL
2021-03-11 618-884-8XXX 8000–8999Assigned ONVOY, LLC 224C WESTPORT IL
2021-03-11 618-896-8XXX 8000–8999Assigned ONVOY, LLC 224C BURNTPRARI IL
2021-03-11 618-912-8XXX 8000–8999Assigned ONVOY, LLC 224C BRIDGEPORT IL
2021-03-11 618-928-6XXX 6000–6999Assigned ONVOY, LLC 224C BIRDS IL
2021-03-11 618-947-7XXX 7000–7999Assigned ONVOY, LLC 224C CHAUNCEY IL
2021-03-09 618-280-7XXX 7000–7999Assigned ONVOY, LLC 224C ADDIEVILLE IL
2021-03-09 618-620-2XXX 2000–2999Assigned ONVOY, LLC 224C HAMBURG IL
2021-03-09 618-749-3XXX 3000–3999Assigned ONVOY, LLC 224C KEYESPORT IL
2021-03-09 618-892-8XXX 8000–8999Assigned ONVOY, LLC 224C FARINA IL
2021-03-05 618-342-9XXX 9000–9999Assigned ONVOY, LLC 224C VILLARIDGE IL
2021-03-05 618-634-5XXX 5000–5999Assigned ONVOY, LLC 224C KARNAK IL
2021-03-05 618-851-5XXX 5000–5999Assigned ONVOY, LLC 224C ANNA IL
2021-03-05 618-851-6XXX 6000–6999Assigned ONVOY, LLC 224C ANNA IL
2021-03-03 618-577-8XXX 8000–8999Assigned MCC NETWORK SERVICES, LLC 075A BREESE IL
2021-03-02 618-472-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MT VERNON IL
2021-02-24 618-359-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-02-24 618-780-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-02-24 618-918-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CENTRALIA IL
2021-02-23 618-217-3XXX 3000–3999Assigned TELNYX LLC 073H WOOD RIVER IL
2021-02-12 618-699-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 VANDALIA IL
2021-02-08 618-522-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 METROPOLIS IL
2021-02-08 618-642-7XXX 7000–7999Assigned MCC NETWORK SERVICES, LLC 075A GREENVILLE IL
2021-02-02 618-206-1XXX 1000–1999Assigned ONVOY, LLC 224C O FALLON IL
2021-02-02 618-228-4XXX 4000–4999Assigned ONVOY, LLC 224C AVISTON IL
2021-02-02 618-270-7XXX 7000–7999Assigned ONVOY, LLC 224C WAYNE CITY 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.