NumberResearchRecent thousands-block assignments
9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2024-09-10 | 872-377-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN09 | IL |
| 2024-09-10 | 872-377-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN09 | IL |
| 2024-09-03 | 872-373-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2024-09-03 | 872-373-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2024-09-03 | 872-373-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2024-09-03 | 872-758-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2024-08-14 | 872-370-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN08 | IL |
| 2024-08-14 | 872-370-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN08 | IL |
| 2024-08-14 | 872-370-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN08 | IL |
| 2024-08-14 | 872-370-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN08 | IL |
| 2024-08-14 | 872-370-8XXX | 8000–8999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN08 | IL |
| 2024-08-14 | 872-370-9XXX | 9000–9999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN08 | IL |
| 2024-08-09 | 872-371-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN09 | IL |
| 2024-08-09 | 872-371-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN09 | IL |
| 2024-08-07 | 872-361-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN05 | IL |
| 2024-07-23 | 872-373-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2024-07-23 | 872-373-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2024-07-23 | 872-373-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2024-07-19 | 872-300-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN07 | IL |
| 2024-07-19 | 872-300-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN07 | IL |
| 2024-07-19 | 872-349-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN07 | IL |
| 2024-07-19 | 872-353-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN06 | IL |
| 2024-07-19 | 872-363-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN05 | IL |
| 2024-07-19 | 872-363-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN05 | IL |
| 2024-07-19 | 872-371-6XXX | 6000–6999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN09 | IL |
| 2024-07-19 | 872-371-7XXX | 7000–7999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | CHICGOZN09 | IL |
| 2024-07-18 | 872-368-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN09 | IL |
| 2024-07-11 | 872-300-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - IL | 984E | CHICGOZN07 | IL |
| 2024-07-11 | 872-353-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - IL | 984E | CHICGOZN06 | IL |
| 2024-07-11 | 872-353-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - IL | 984E | CHICGOZN06 | IL |
| 2024-07-11 | 872-373-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2024-07-11 | 872-373-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2024-07-11 | 872-373-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN10 | IL |
| 2024-07-08 | 872-375-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2024-07-08 | 872-376-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN02 | IL |
| 2024-07-05 | 872-312-2XXX | 2000–2999 | Assigned | ONVOY, LLC | 224C | CHICGOZN02 | IL |
| 2024-07-05 | 872-350-7XXX | 7000–7999 | Assigned | ONVOY, LLC | 224C | CHICGOZN06 | IL |
| 2024-07-05 | 872-364-5XXX | 5000–5999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2024-07-05 | 872-371-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN09 | IL |
| 2024-07-05 | 872-371-1XXX | 1000–1999 | Assigned | ONVOY, LLC | 224C | CHICGOZN09 | IL |
| 2024-07-05 | 872-772-4XXX | 4000–4999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2024-07-05 | 872-838-1XXX | 1000–1999 | Assigned | ONVOY, LLC | 224C | CHICGOZN05 | IL |
| 2024-07-05 | 872-877-4XXX | 4000–4999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2024-06-18 | 872-364-4XXX | 4000–4999 | Assigned | ONVOY, LLC | 224C | CHICGOZN01 | IL |
| 2024-06-11 | 872-366-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | CHICGOZN03 | IL |
| 2024-06-11 | 872-373-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN10 | IL |
| 2024-06-06 | 872-369-3XXX | 3000–3999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2024-06-05 | 872-361-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN05 | IL |
| 2024-06-05 | 872-361-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN05 | IL |
| 2024-06-05 | 872-361-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN05 | IL |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.