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 |
|---|---|---|---|---|---|---|---|
| 2016-04-11 | 872-843-2XXX | 2000–2999 | Assigned | ILLINOIS BELL TEL CO | 9329 | CHICGOZN04 | IL |
| 2016-04-11 | 872-843-3XXX | 3000–3999 | Assigned | ILLINOIS BELL TEL CO | 9329 | CHICGOZN04 | IL |
| 2016-04-11 | 872-843-4XXX | 4000–4999 | Assigned | ILLINOIS BELL TEL CO | 9329 | CHICGOZN04 | IL |
| 2016-04-11 | 872-843-5XXX | 5000–5999 | Assigned | ILLINOIS BELL TEL CO | 9329 | CHICGOZN04 | IL |
| 2016-04-11 | 872-843-6XXX | 6000–6999 | Assigned | ILLINOIS BELL TEL CO | 9329 | CHICGOZN04 | IL |
| 2016-04-11 | 872-843-7XXX | 7000–7999 | Assigned | ILLINOIS BELL TEL CO | 9329 | CHICGOZN04 | IL |
| 2016-04-11 | 872-843-8XXX | 8000–8999 | Assigned | ILLINOIS BELL TEL CO | 9329 | CHICGOZN04 | IL |
| 2016-04-11 | 872-843-9XXX | 9000–9999 | Assigned | ILLINOIS BELL TEL CO | 9329 | CHICGOZN04 | IL |
| 2016-03-24 | 872-304-3XXX | 3000–3999 | Assigned | ONVOY, LLC | 224C | CHICGOZN03 | IL |
| 2016-03-24 | 872-304-4XXX | 4000–4999 | Assigned | ONVOY, LLC | 224C | CHICGOZN03 | IL |
| 2016-03-04 | 872-772-7XXX | 7000–7999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2016-03-04 | 872-772-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2016-03-04 | 872-772-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN04 | IL |
| 2016-01-27 | 872-219-3XXX | 3000–3999 | Assigned | ONVOY, LLC | 224C | CHICGOZN07 | IL |
| 2016-01-27 | 872-219-4XXX | 4000–4999 | Assigned | ONVOY, LLC | 224C | CHICGOZN07 | IL |
| 2016-01-27 | 872-400-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN03 | IL |
| 2016-01-27 | 872-400-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN03 | IL |
| 2016-01-27 | 872-702-3XXX | 3000–3999 | Assigned | ONVOY, LLC | 224C | CHICGOZN10 | IL |
| 2016-01-27 | 872-702-6XXX | 6000–6999 | Assigned | ONVOY, LLC | 224C | CHICGOZN10 | IL |
| 2015-12-30 | 872-772-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN04 | IL |
| 2015-12-29 | 872-231-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN05 | IL |
| 2015-12-29 | 872-231-1XXX | 1000–1999 | Assigned | ONVOY, LLC | 224C | CHICGOZN05 | IL |
| 2015-12-29 | 872-304-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN03 | IL |
| 2015-12-29 | 872-304-1XXX | 1000–1999 | Assigned | ONVOY, LLC | 224C | CHICGOZN03 | IL |
| 2015-12-29 | 872-304-2XXX | 2000–2999 | Assigned | ONVOY, LLC | 224C | CHICGOZN03 | IL |
| 2015-12-22 | 872-702-7XXX | 7000–7999 | Assigned | ONVOY, LLC | 224C | CHICGOZN10 | IL |
| 2015-12-22 | 872-702-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | CHICGOZN10 | IL |
| 2015-12-10 | 872-903-5XXX | 5000–5999 | Assigned | ONVOY, LLC | 224C | CHICGOZN09 | IL |
| 2015-12-10 | 872-903-6XXX | 6000–6999 | Assigned | ONVOY, LLC | 224C | CHICGOZN09 | IL |
| 2015-11-25 | 872-204-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN08 | IL |
| 2015-11-25 | 872-204-1XXX | 1000–1999 | Assigned | ONVOY, LLC | 224C | CHICGOZN08 | IL |
| 2015-11-25 | 872-204-2XXX | 2000–2999 | Assigned | ONVOY, LLC | 224C | CHICGOZN08 | IL |
| 2015-11-25 | 872-219-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN07 | IL |
| 2015-11-25 | 872-219-1XXX | 1000–1999 | Assigned | ONVOY, LLC | 224C | CHICGOZN07 | IL |
| 2015-11-25 | 872-219-2XXX | 2000–2999 | Assigned | ONVOY, LLC | 224C | CHICGOZN07 | IL |
| 2015-11-18 | 872-276-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | CHICGOZN06 | IL |
| 2015-11-18 | 872-276-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | CHICGOZN06 | IL |
| 2015-11-18 | 872-281-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | CHICGOZN06 | IL |
| 2015-11-17 | 872-810-7XXX | 7000–7999 | Assigned | ONVOY, LLC | 224C | CHICGOZN02 | IL |
| 2015-11-17 | 872-810-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | CHICGOZN02 | IL |
| 2015-11-11 | 872-267-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | CHICGOZN08 | IL |
| 2015-11-11 | 872-276-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | CHICGOZN06 | IL |
| 2015-11-11 | 872-702-5XXX | 5000–5999 | Assigned | ONVOY, LLC | 224C | CHICGOZN10 | IL |
| 2015-11-11 | 872-904-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN07 | IL |
| 2015-11-10 | 872-315-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2015-11-09 | 872-813-3XXX | 3000–3999 | Assigned | PEERLESS NETWORK OF ILLINOIS, LLC - IL | 063E | CHICGOZN05 | IL |
| 2015-10-27 | 872-315-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | CHICGOZN04 | IL |
| 2015-10-23 | 872-724-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN07 | IL |
| 2015-10-21 | 872-315-1XXX | 1000–1999 | Assigned | ACCESS ONE, INC. - IL | 5447 | CHICGOZN04 | IL |
| 2015-10-20 | 872-276-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN06 | 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.