NumberResearchRecent thousands-block assignments
9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 872
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
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-01-05 | 872-351-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | CHICGOZN01 | IL |
| 2024-01-05 | 872-353-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | CHICGOZN06 | IL |
| 2024-01-05 | 872-353-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | CHICGOZN06 | IL |
| 2024-01-05 | 872-353-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | CHICGOZN06 | IL |
| 2024-01-05 | 872-353-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | CHICGOZN06 | IL |
| 2024-01-05 | 872-354-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | CHICGOZN08 | IL |
| 2024-01-05 | 872-354-1XXX | 1000–1999 | Assigned | COMMIO, LLC | 939H | CHICGOZN08 | IL |
| 2024-01-05 | 872-354-2XXX | 2000–2999 | Assigned | COMMIO, LLC | 939H | CHICGOZN08 | IL |
| 2024-01-05 | 872-354-3XXX | 3000–3999 | Assigned | COMMIO, LLC | 939H | CHICGOZN08 | IL |
| 2024-01-05 | 872-529-4XXX | 4000–4999 | Assigned | ONVOY, LLC | 224C | CHICGOZN02 | IL |
| 2024-01-05 | 872-842-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN11 | IL |
| 2024-01-05 | 872-842-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN11 | IL |
| 2024-01-05 | 872-867-1XXX | 1000–1999 | Assigned | ONVOY, LLC | 224C | CHICGOZN03 | IL |
| 2024-01-04 | 872-330-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN02 | IL |
| 2024-01-04 | 872-330-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN02 | IL |
| 2024-01-04 | 872-340-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN04 | IL |
| 2024-01-04 | 872-340-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN04 | IL |
| 2024-01-04 | 872-350-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN06 | IL |
| 2024-01-04 | 872-350-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN06 | IL |
| 2023-12-28 | 872-329-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2023-12-19 | 872-217-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN08 | IL |
| 2023-12-19 | 872-217-1XXX | 1000–1999 | Assigned | ONVOY, LLC | 224C | CHICGOZN08 | IL |
| 2023-12-19 | 872-217-5XXX | 5000–5999 | Assigned | ONVOY, LLC | 224C | CHICGOZN08 | IL |
| 2023-12-19 | 872-217-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | CHICGOZN08 | IL |
| 2023-12-19 | 872-674-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN08 | IL |
| 2023-12-19 | 872-674-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | CHICGOZN08 | IL |
| 2023-12-15 | 872-340-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2023-12-15 | 872-340-7XXX | 7000–7999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2023-12-15 | 872-340-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2023-12-15 | 872-340-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2023-12-12 | 872-300-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN07 | IL |
| 2023-12-12 | 872-300-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN07 | IL |
| 2023-12-06 | 872-283-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN07 | IL |
| 2023-12-06 | 872-341-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN05 | IL |
| 2023-12-06 | 872-341-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN05 | IL |
| 2023-12-06 | 872-341-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN05 | IL |
| 2023-12-06 | 872-341-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN05 | IL |
| 2023-11-28 | 872-329-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2023-11-28 | 872-329-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2023-11-28 | 872-329-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2023-11-28 | 872-329-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2023-11-28 | 872-329-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2023-11-14 | 872-200-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN06 | IL |
| 2023-11-14 | 872-200-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN06 | IL |
| 2023-11-14 | 872-200-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN06 | IL |
| 2023-11-14 | 872-200-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN06 | IL |
| 2023-11-14 | 872-300-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN07 | IL |
| 2023-11-14 | 872-300-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN07 | IL |
| 2023-11-14 | 872-300-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN07 | IL |
| 2023-11-09 | 872-275-5XXX | 5000–5999 | Assigned | NUSO, LLC | 478J | CHICGOZN01 | 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.