NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

13 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 228
ONVOY, LLC - MS 9
OPENTACT INC. 1
INTRADO COMMUNICATIONS, LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 1
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
2020-09-28 228-280-4XXX 4000–4999Assigned ONVOY, LLC - MS 719E BILOXI MS
2020-09-28 228-280-5XXX 5000–5999Assigned ONVOY, LLC - MS 719E BILOXI MS
2020-09-28 228-304-8XXX 8000–8999Assigned ONVOY, LLC - MS 719E BAYSTLOUIS MS
2020-09-28 228-567-2XXX 2000–2999Assigned ONVOY, LLC - MS 719E PASCAGOULA MS
2020-09-28 228-567-3XXX 3000–3999Assigned ONVOY, LLC - MS 719E PASCAGOULA MS
2020-09-28 228-586-7XXX 7000–7999Assigned ONVOY, LLC - MS 719E PASSCHRSTN MS
2020-09-28 228-586-9XXX 9000–9999Assigned ONVOY, LLC - MS 719E PASSCHRSTN MS
2020-09-28 228-591-3XXX 3000–3999Assigned ONVOY, LLC - MS 719E VANCLEAVE MS
2020-09-28 228-591-4XXX 4000–4999Assigned ONVOY, LLC - MS 719E VANCLEAVE MS
2020-09-28 228-666-7XXX 7000–7999Assigned ONVOY, LLC - MS 719E MOSS POINT MS
2020-09-28 228-666-8XXX 8000–8999Assigned ONVOY, LLC - MS 719E MOSS POINT MS
2020-09-28 228-678-4XXX 4000–4999Assigned ONVOY, LLC - MS 719E GULFPORT MS
2020-09-28 228-678-5XXX 5000–5999Assigned ONVOY, LLC - MS 719E GULFPORT MS
2020-09-28 228-678-6XXX 6000–6999Assigned ONVOY, LLC - MS 719E GULFPORT MS
2020-09-28 228-707-4XXX 4000–4999Assigned ONVOY, LLC - MS 719E PEARLINGTN MS
2020-09-28 228-707-6XXX 6000–6999Assigned ONVOY, LLC - MS 719E PEARLINGTN MS
2020-09-28 228-797-0XXX 0000–0999Assigned ONVOY, LLC - MS 719E BAYSTLOUIS MS
2020-09-28 228-800-6XXX 6000–6999Assigned ONVOY, LLC - MS 719E OCEAN SPG MS
2020-09-28 228-800-7XXX 7000–7999Assigned ONVOY, LLC - MS 719E OCEAN SPG MS
2020-09-28 228-900-5XXX 5000–5999Assigned ONVOY, LLC - MS 719E TANNERWLMS MS
2020-09-28 228-900-6XXX 6000–6999Assigned ONVOY, LLC - MS 719E TANNERWLMS MS
2020-09-28 228-901-5XXX 5000–5999Assigned ONVOY, LLC - MS 719E HURLEY MS
2020-09-28 228-901-6XXX 6000–6999Assigned ONVOY, LLC - MS 719E HURLEY MS
2020-09-21 228-262-1XXX 1000–1999Assigned NUSO, LLC 478J BILOXI MS
2020-09-17 228-387-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-387-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-387-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-387-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-387-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-387-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-387-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-387-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-387-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-396-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-432-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-456-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-456-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-456-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-09-17 228-456-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
2020-08-17 228-335-6XXX 6000–6999Assigned ONVOY, LLC - MS 719E TANNERWLMS MS
2020-08-17 228-335-7XXX 7000–7999Assigned ONVOY, LLC - MS 719E TANNERWLMS MS
2020-08-17 228-335-8XXX 8000–8999Assigned ONVOY, LLC - MS 719E TANNERWLMS MS
2020-08-17 228-335-9XXX 9000–9999Assigned ONVOY, LLC - MS 719E TANNERWLMS MS
2020-08-17 228-338-1XXX 1000–1999Assigned ONVOY, LLC - MS 719E BILOXI MS
2020-08-17 228-338-2XXX 2000–2999Assigned ONVOY, LLC - MS 719E BILOXI MS
2020-08-17 228-338-3XXX 3000–3999Assigned ONVOY, LLC - MS 719E BILOXI MS
2020-08-17 228-338-4XXX 4000–4999Assigned ONVOY, LLC - MS 719E BILOXI MS
2020-08-17 228-338-5XXX 5000–5999Assigned ONVOY, LLC - MS 719E BILOXI MS
2020-08-17 228-338-6XXX 6000–6999Assigned ONVOY, LLC - MS 719E BILOXI MS
2020-08-17 228-357-7XXX 7000–7999Assigned ONVOY, LLC - MS 719E GULFPORT MS

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.