NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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, all time — NPA 240
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2020-05-06 | 240-873-3XXX | 3000–3999 | Assigned | VERIZON MARYLAND, INC. | 9212 | BUCKEYSTN | MD |
| 2020-05-06 | 240-873-4XXX | 4000–4999 | Assigned | VERIZON MARYLAND, INC. | 9212 | BUCKEYSTN | MD |
| 2020-03-20 | 240-721-1XXX | 1000–1999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSHNGTNZN5 | MD |
| 2020-03-20 | 240-721-2XXX | 2000–2999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSHNGTNZN5 | MD |
| 2020-03-20 | 240-721-3XXX | 3000–3999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSHNGTNZN5 | MD |
| 2020-03-20 | 240-721-4XXX | 4000–4999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSHNGTNZN5 | MD |
| 2020-03-20 | 240-721-5XXX | 5000–5999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSHNGTNZN5 | MD |
| 2020-03-20 | 240-721-6XXX | 6000–6999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSHNGTNZN5 | MD |
| 2016-07-05 | 240-592-0XXX | 0000–0999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNG236Z13 | MD |
| 2016-07-05 | 240-592-1XXX | 1000–1999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNG236Z13 | MD |
| 2016-07-05 | 240-592-2XXX | 2000–2999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNG236Z13 | MD |
| 2016-07-05 | 240-592-3XXX | 3000–3999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNG236Z13 | MD |
| 2016-07-05 | 240-592-4XXX | 4000–4999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNG236Z13 | MD |
| 2016-07-05 | 240-592-5XXX | 5000–5999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNG236Z13 | MD |
| 2016-07-05 | 240-592-6XXX | 6000–6999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNG236Z13 | MD |
| 2016-07-05 | 240-592-7XXX | 7000–7999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNG236Z13 | MD |
| 2016-07-05 | 240-592-8XXX | 8000–8999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNG236Z13 | MD |
| 2016-07-05 | 240-592-9XXX | 9000–9999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNG236Z13 | MD |
| 2015-08-28 | 240-699-6XXX | 6000–6999 | Assigned | VERIZON MARYLAND, INC. | 9212 | BUCKEYSTN | MD |
| 2015-08-28 | 240-699-7XXX | 7000–7999 | Assigned | VERIZON MARYLAND, INC. | 9212 | BUCKEYSTN | MD |
| 2015-08-28 | 240-699-8XXX | 8000–8999 | Assigned | VERIZON MARYLAND, INC. | 9212 | BUCKEYSTN | MD |
| 2015-08-28 | 240-699-9XXX | 9000–9999 | Assigned | VERIZON MARYLAND, INC. | 9212 | BUCKEYSTN | MD |
| 2010-04-28 | 240-583-3XXX | 3000–3999 | Assigned | VERIZON MARYLAND, INC. | 9212 | LAUREL236 | MD |
| 2010-04-28 | 240-583-4XXX | 4000–4999 | Assigned | VERIZON MARYLAND, INC. | 9212 | LAUREL236 | MD |
| 2010-04-28 | 240-583-5XXX | 5000–5999 | Assigned | VERIZON MARYLAND, INC. | 9212 | LAUREL236 | MD |
| 2010-04-28 | 240-583-6XXX | 6000–6999 | Assigned | VERIZON MARYLAND, INC. | 9212 | LAUREL236 | MD |
| 2009-12-09 | 240-469-6XXX | 6000–6999 | Assigned | VERIZON MARYLAND, INC. | 9212 | HAGERSTOWN | MD |
| 2009-10-13 | 240-699-4XXX | 4000–4999 | Assigned | VERIZON MARYLAND, INC. | 9212 | BUCKEYSTN | MD |
| 2009-10-13 | 240-699-5XXX | 5000–5999 | Assigned | VERIZON MARYLAND, INC. | 9212 | BUCKEYSTN | MD |
| 2008-10-10 | 240-699-2XXX | 2000–2999 | Assigned | VERIZON MARYLAND, INC. | 9212 | BUCKEYSTN | MD |
| 2008-10-10 | 240-699-3XXX | 3000–3999 | Assigned | VERIZON MARYLAND, INC. | 9212 | BUCKEYSTN | MD |
| 2008-08-15 | 240-439-2XXX | 2000–2999 | Assigned | VERIZON MARYLAND, INC. | 9212 | FREDERICK | MD |
| 2008-06-23 | 240-581-6XXX | 6000–6999 | Assigned | VERIZON MARYLAND, INC. | 9212 | LAUREL236 | MD |
| 2008-06-23 | 240-581-7XXX | 7000–7999 | Assigned | VERIZON MARYLAND, INC. | 9212 | LAUREL236 | MD |
| 2008-06-16 | 240-295-2XXX | 2000–2999 | Assigned | VERIZON MARYLAND, INC. | 9212 | LAUREL236 | MD |
| 2008-05-29 | 240-964-0XXX | 0000–0999 | Assigned | VERIZON MARYLAND, INC. | 9212 | CUMBERLAND | MD |
| 2008-05-29 | 240-964-1XXX | 1000–1999 | Assigned | VERIZON MARYLAND, INC. | 9212 | CUMBERLAND | MD |
| 2008-05-29 | 240-964-2XXX | 2000–2999 | Assigned | VERIZON MARYLAND, INC. | 9212 | CUMBERLAND | MD |
| 2008-05-29 | 240-964-3XXX | 3000–3999 | Assigned | VERIZON MARYLAND, INC. | 9212 | CUMBERLAND | MD |
| 2008-05-29 | 240-964-4XXX | 4000–4999 | Assigned | VERIZON MARYLAND, INC. | 9212 | CUMBERLAND | MD |
| 2008-05-29 | 240-964-5XXX | 5000–5999 | Assigned | VERIZON MARYLAND, INC. | 9212 | CUMBERLAND | MD |
| 2008-05-29 | 240-964-6XXX | 6000–6999 | Assigned | VERIZON MARYLAND, INC. | 9212 | CUMBERLAND | MD |
| 2008-05-29 | 240-964-7XXX | 7000–7999 | Assigned | VERIZON MARYLAND, INC. | 9212 | CUMBERLAND | MD |
| 2008-05-29 | 240-964-8XXX | 8000–8999 | Assigned | VERIZON MARYLAND, INC. | 9212 | CUMBERLAND | MD |
| 2008-05-29 | 240-964-9XXX | 9000–9999 | Assigned | VERIZON MARYLAND, INC. | 9212 | CUMBERLAND | MD |
| 2007-05-10 | 240-826-0XXX | 0000–0999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNGTNZN10 | MD |
| 2007-05-10 | 240-826-1XXX | 1000–1999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNGTNZN10 | MD |
| 2007-05-10 | 240-826-2XXX | 2000–2999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNGTNZN10 | MD |
| 2007-05-10 | 240-826-3XXX | 3000–3999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNGTNZN10 | MD |
| 2007-05-10 | 240-826-4XXX | 4000–4999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WSNGTNZN10 | MD |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.