NumberResearchRecent thousands-block assignments
5 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, last 30 days — NPA 240
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 |
|---|---|---|---|---|---|---|---|
| 2015-04-24 | 240-442-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | OAKLAND | MD |
| 2015-04-21 | 240-257-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | NANJEMOY | MD |
| 2015-04-15 | 240-623-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | WSHNGTNZN4 | MD |
| 2015-04-14 | 240-273-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WSHNGTNZN6 | MD |
| 2015-04-14 | 240-493-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WSHNGTNZN6 | MD |
| 2015-04-14 | 240-513-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | HAGERSTOWN | MD |
| 2015-04-14 | 240-513-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | HAGERSTOWN | MD |
| 2015-04-14 | 240-513-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | HAGERSTOWN | MD |
| 2015-04-14 | 240-528-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | HUGHESVL | MD |
| 2015-04-14 | 240-544-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WSNG236Z14 | MD |
| 2015-04-14 | 240-544-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WSNG236Z14 | MD |
| 2015-04-14 | 240-548-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WSNG236Z14 | MD |
| 2015-04-14 | 240-766-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WSHNGTNZN6 | MD |
| 2015-04-09 | 240-734-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | SMITHSBURG | MD |
| 2015-03-31 | 240-660-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | WSNGTNZN10 | MD |
| 2015-03-31 | 240-681-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | BRANDYWINE | MD |
| 2015-03-31 | 240-808-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | LEONARDTN | MD |
| 2015-03-31 | 240-892-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | WSNG236Z15 | MD |
| 2015-03-26 | 240-309-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | LEONARDTN | MD |
| 2015-03-26 | 240-513-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | HAGERSTOWN | MD |
| 2015-03-26 | 240-532-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | WSHNGTNZN5 | MD |
| 2015-03-26 | 240-608-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | FREDERICK | MD |
| 2015-03-26 | 240-762-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | WSHNGTNZN2 | MD |
| 2015-03-26 | 240-802-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | WSHNGTNZN2 | MD |
| 2015-03-24 | 240-288-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | THURMONT | MD |
| 2015-03-17 | 240-254-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | HUGHESVL | MD |
| 2015-03-10 | 240-270-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | WALDORF | MD |
| 2015-02-26 | 240-466-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | MECHANCSVL | MD |
| 2015-02-23 | 240-714-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN4 | MD |
| 2015-02-23 | 240-714-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN4 | MD |
| 2015-02-20 | 240-802-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | 7591 | WSHNGTNZN2 | MD |
| 2015-02-19 | 240-348-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | WSNGTNZN16 | MD |
| 2015-02-19 | 240-503-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | TOMPKINSVL | MD |
| 2015-02-19 | 240-745-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | DAMASCS236 | MD |
| 2015-02-19 | 240-787-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | BRANDYWINE | MD |
| 2015-02-19 | 240-892-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | WSNG236Z15 | MD |
| 2015-02-18 | 240-386-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | WSNGTNZN10 | MD |
| 2015-02-18 | 240-900-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | WSHNGTNZN4 | MD |
| 2015-02-18 | 240-900-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MD | 876D | WSHNGTNZN4 | MD |
| 2015-02-18 | 240-900-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | WSHNGTNZN4 | MD |
| 2015-02-05 | 240-288-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | THURMONT | MD |
| 2015-02-03 | 240-284-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | FROSTBURG | MD |
| 2015-02-03 | 240-801-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | GAITHERSBG | MD |
| 2015-01-20 | 240-552-8XXX | 8000–8999 | Assigned | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | 7591 | WSNGTNZN10 | MD |
| 2015-01-15 | 240-618-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSNGTNZN10 | MD |
| 2015-01-15 | 240-618-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSNGTNZN10 | MD |
| 2015-01-14 | 240-341-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | BUCKEYSTN | MD |
| 2015-01-13 | 240-236-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MD | 6119 | FREDERICK | MD |
| 2015-01-12 | 240-318-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | WSNGTNZN16 | MD |
| 2014-12-23 | 240-903-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | INDIANHEAD | 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.