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 |
|---|---|---|---|---|---|---|---|
| 2016-01-07 | 240-760-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN2 | MD |
| 2016-01-07 | 240-760-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN2 | MD |
| 2016-01-06 | 240-808-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | LEONARDTN | MD |
| 2015-12-31 | 240-609-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CUMBERLAND | MD |
| 2015-12-31 | 240-609-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CUMBERLAND | MD |
| 2015-12-29 | 240-261-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | GAITHERSBG | MD |
| 2015-12-29 | 240-261-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | GAITHERSBG | MD |
| 2015-12-29 | 240-261-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | GAITHERSBG | MD |
| 2015-12-17 | 240-805-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | GAITHERSBG | MD |
| 2015-12-11 | 240-847-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | WSHNGTNZN3 | MD |
| 2015-12-11 | 240-847-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | WSHNGTNZN3 | MD |
| 2015-12-11 | 240-970-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | WSNGTNZN12 | MD |
| 2015-12-09 | 240-474-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | GAITHERSBG | MD |
| 2015-12-07 | 240-623-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MD | 876D | WSHNGTNZN4 | MD |
| 2015-12-07 | 240-623-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | WSHNGTNZN4 | MD |
| 2015-12-02 | 240-760-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN2 | MD |
| 2015-12-02 | 240-760-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN2 | MD |
| 2015-12-02 | 240-760-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN2 | MD |
| 2015-12-02 | 240-781-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN2 | MD |
| 2015-12-02 | 240-781-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN2 | MD |
| 2015-12-02 | 240-781-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN2 | MD |
| 2015-11-30 | 240-641-6XXX | 6000–6999 | Assigned | ATLANTECH ONLINE, INC. - MD | 361H | WSHNGTNZN3 | MD |
| 2015-11-30 | 240-660-9XXX | 9000–9999 | Assigned | ATLANTECH ONLINE, INC. - MD | 361H | WSNGTNZN10 | MD |
| 2015-11-24 | 240-714-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN4 | MD |
| 2015-11-24 | 240-714-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN4 | MD |
| 2015-11-24 | 240-714-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN4 | MD |
| 2015-11-24 | 240-917-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | LAUREL236 | MD |
| 2015-11-24 | 240-917-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | LAUREL236 | MD |
| 2015-11-18 | 240-805-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | GAITHERSBG | MD |
| 2015-11-18 | 240-815-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | FREDERICK | MD |
| 2015-11-16 | 240-474-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | GAITHERSBG | MD |
| 2015-11-16 | 240-732-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MOUNT AIRY | MD |
| 2015-11-16 | 240-830-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | WSHNGTNZN5 | MD |
| 2015-11-16 | 240-917-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LAUREL236 | MD |
| 2015-11-16 | 240-917-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LAUREL236 | MD |
| 2015-11-16 | 240-917-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LAUREL236 | MD |
| 2015-11-16 | 240-917-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LAUREL236 | MD |
| 2015-11-16 | 240-917-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LAUREL236 | MD |
| 2015-11-09 | 240-470-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LAUREL236 | MD |
| 2015-11-09 | 240-470-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LAUREL236 | MD |
| 2015-11-09 | 240-470-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LAUREL236 | MD |
| 2015-11-09 | 240-666-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF MARYLAND, LLC | 568G | NANJEMOY | MD |
| 2015-11-09 | 240-816-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | KEEDYSVL | MD |
| 2015-11-09 | 240-901-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF MARYLAND, LLC | 568G | LA PLATA | MD |
| 2015-10-30 | 240-651-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | FREDERICK | MD |
| 2015-10-30 | 240-972-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | LAUREL238 | MD |
| 2015-10-30 | 240-972-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | LAUREL238 | MD |
| 2015-10-28 | 240-781-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN2 | MD |
| 2015-10-28 | 240-781-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN2 | MD |
| 2015-10-28 | 240-781-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN2 | 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.