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
2019-07-12 618-356-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - IL 984E BUNKERHILL IL
2019-07-01 618-226-4XXX 4000–4999Assigned ONVOY, LLC 224C SHATTUC IL
2019-07-01 618-226-5XXX 5000–5999Assigned ONVOY, LLC 224C SHATTUC IL
2019-07-01 618-278-5XXX 5000–5999Assigned ONVOY, LLC 224C WOODBURN IL
2019-07-01 618-278-6XXX 6000–6999Assigned ONVOY, LLC 224C WOODBURN IL
2019-07-01 618-326-4XXX 4000–4999Assigned ONVOY, LLC 224C MULBRY GRV IL
2019-07-01 618-326-5XXX 5000–5999Assigned ONVOY, LLC 224C MULBRY GRV IL
2019-07-01 618-423-7XXX 7000–7999Assigned ONVOY, LLC 224C RAMSEY IL
2019-07-01 618-423-8XXX 8000–8999Assigned ONVOY, LLC 224C RAMSEY IL
2019-07-01 618-425-6XXX 6000–6999Assigned ONVOY, LLC 224C PITTSBURG IL
2019-07-01 618-425-8XXX 8000–8999Assigned ONVOY, LLC 224C PITTSBURG IL
2019-07-01 618-432-1XXX 1000–1999Assigned ONVOY, LLC 224C PATOKA IL
2019-07-01 618-432-8XXX 8000–8999Assigned ONVOY, LLC 224C PATOKA IL
2019-07-01 618-461-5XXX 5000–5999Assigned ONVOY, LLC 224C ST ELMO IL
2019-07-01 618-461-6XXX 6000–6999Assigned ONVOY, LLC 224C ST ELMO IL
2019-07-01 618-496-6XXX 6000–6999Assigned ONVOY, LLC 224C TAMAROA IL
2019-07-01 618-496-7XXX 7000–7999Assigned ONVOY, LLC 224C TAMAROA IL
2019-07-01 618-507-5XXX 5000–5999Assigned ONVOY, LLC 224C WOODLAWN IL
2019-07-01 618-507-6XXX 6000–6999Assigned ONVOY, LLC 224C WOODLAWN IL
2019-07-01 618-538-0XXX 0000–0999Assigned ONVOY, LLC 224C WESTVIEW IL
2019-07-01 618-538-1XXX 1000–1999Assigned ONVOY, LLC 224C WESTVIEW IL
2019-07-01 618-669-1XXX 1000–1999Assigned ONVOY, LLC 224C POCAHONTAS IL
2019-07-01 618-669-8XXX 8000–8999Assigned ONVOY, LLC 224C POCAHONTAS IL
2019-07-01 618-762-3XXX 3000–3999Assigned ONVOY, LLC 224C WALTONVL IL
2019-07-01 618-762-4XXX 4000–4999Assigned ONVOY, LLC 224C WALTONVL IL
2019-07-01 618-836-4XXX 4000–4999Assigned ONVOY, LLC 224C SHIPMAN IL
2019-07-01 618-836-8XXX 8000–8999Assigned ONVOY, LLC 224C SHIPMAN IL
2019-07-01 618-934-1XXX 1000–1999Assigned ONVOY, LLC 224C SUMMERFLD IL
2019-07-01 618-934-8XXX 8000–8999Assigned ONVOY, LLC 224C SUMMERFLD IL
2019-06-29 618-243-0XXX 0000–0999Assigned ONVOY, LLC 224C OKAWVILLE IL
2019-06-29 618-247-5XXX 5000–5999Assigned ONVOY, LLC 224C SANDOVAL IL
2019-06-29 618-248-0XXX 0000–0999Assigned ONVOY, LLC 224C ALBERS IL
2019-06-29 618-248-8XXX 8000–8999Assigned ONVOY, LLC 224C ALBERS IL
2019-06-29 618-249-3XXX 3000–3999Assigned ONVOY, LLC 224C IRVINGTON IL
2019-06-29 618-249-5XXX 5000–5999Assigned ONVOY, LLC 224C IRVINGTON IL
2019-06-29 618-323-5XXX 5000–5999Assigned ONVOY, LLC 224C IUKA IL
2019-06-29 618-323-8XXX 8000–8999Assigned ONVOY, LLC 224C IUKA IL
2019-06-29 618-328-4XXX 4000–4999Assigned ONVOY, LLC 224C DOW IL
2019-06-29 618-328-5XXX 5000–5999Assigned ONVOY, LLC 224C DOW IL
2019-06-29 618-347-4XXX 4000–4999Assigned ONVOY, LLC 224C SEFTON IL
2019-06-29 618-349-4XXX 4000–4999Assigned ONVOY, LLC 224C ST PETER IL
2019-06-29 618-356-2XXX 2000–2999Assigned ONVOY, LLC 224C BUNKERHILL IL
2019-06-29 618-356-3XXX 3000–3999Assigned ONVOY, LLC 224C BUNKERHILL IL
2019-06-29 618-360-7XXX 7000–7999Assigned ONVOY, LLC 224C HARMONY IL
2019-06-29 618-360-8XXX 8000–8999Assigned ONVOY, LLC 224C HARMONY IL
2019-06-29 618-362-3XXX 3000–3999Assigned ONVOY, LLC 224C DORCHESTER IL
2019-06-29 618-362-4XXX 4000–4999Assigned ONVOY, LLC 224C DORCHESTER IL
2019-06-29 618-368-4XXX 4000–4999Assigned ONVOY, LLC 224C HARDIN IL
2019-06-29 618-368-5XXX 5000–5999Assigned ONVOY, LLC 224C HARDIN IL
2019-06-29 618-376-0XXX 0000–0999Assigned ONVOY, LLC 224C FIELDON 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.