NumberResearchRecent thousands-block assignments
5 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 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 |
|---|---|---|---|---|---|---|---|
| 2009-12-22 | 240-389-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ASHTON236 | MD |
| 2009-12-22 | 240-389-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ASHTON236 | MD |
| 2009-12-22 | 240-389-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ASHTON236 | MD |
| 2009-12-21 | 240-626-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | FREDERICK | MD |
| 2009-12-10 | 240-813-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GAITHERSBG | MD |
| 2009-12-09 | 240-469-6XXX | 6000–6999 | Assigned | VERIZON MARYLAND, INC. | 9212 | HAGERSTOWN | MD |
| 2009-12-09 | 240-646-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LAUREL236 | MD |
| 2009-12-09 | 240-646-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LAUREL236 | MD |
| 2009-12-07 | 240-640-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WALDORF | MD |
| 2009-12-03 | 240-509-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WSNG238Z14 | MD |
| 2009-12-01 | 240-542-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | WSNG236Z13 | MD |
| 2009-11-24 | 240-280-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LAUREL236 | MD |
| 2009-11-18 | 240-382-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | HAGERSTOWN | MD |
| 2009-11-16 | 240-479-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | WSHNGTNZN2 | MD |
| 2009-11-16 | 240-638-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | WSHNGTNZN3 | MD |
| 2009-10-30 | 240-920-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CUMBERLAND | MD |
| 2009-10-30 | 240-920-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CUMBERLAND | MD |
| 2009-10-29 | 240-318-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | WSNGTNZN16 | MD |
| 2009-10-23 | 240-397-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | FREDERICK | MD |
| 2009-10-16 | 240-408-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN10 | MD |
| 2009-10-15 | 240-316-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN2 | MD |
| 2009-10-15 | 240-316-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN2 | MD |
| 2009-10-15 | 240-316-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN2 | MD |
| 2009-10-15 | 240-316-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | WSHNGTNZN2 | MD |
| 2009-10-15 | 240-394-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | MOUNT AIRY | MD |
| 2009-10-15 | 240-490-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | MIDDLETOWN | 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 |
| 2009-09-17 | 240-406-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSNGTNZN10 | MD |
| 2009-09-17 | 240-669-0XXX | 0000–0999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - DC | 7529 | WSNGTNZN11 | MD |
| 2009-09-03 | 240-319-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | LAUREL238 | MD |
| 2009-09-03 | 240-397-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | FREDERICK | MD |
| 2009-09-03 | 240-561-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | LEONARDTN | MD |
| 2009-08-05 | 240-374-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | LAUREL236 | MD |
| 2009-08-05 | 240-457-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | FREDERICK | MD |
| 2009-08-05 | 240-695-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | WSHNGTNZN5 | MD |
| 2009-08-05 | 240-818-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | MYERSVILLE | MD |
| 2009-08-03 | 240-439-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MD | 6119 | FREDERICK | MD |
| 2009-08-03 | 240-581-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MD | 6119 | LAUREL236 | MD |
| 2009-07-14 | 240-324-3XXX | 3000–3999 | Assigned | YMAX COMMUNICATIONS CORP. - MD | 281E | ASHTON238 | MD |
| 2009-07-14 | 240-324-4XXX | 4000–4999 | Assigned | YMAX COMMUNICATIONS CORP. - MD | 281E | ASHTON238 | MD |
| 2009-07-14 | 240-324-5XXX | 5000–5999 | Assigned | YMAX COMMUNICATIONS CORP. - MD | 281E | ASHTON238 | MD |
| 2009-07-14 | 240-654-5XXX | 5000–5999 | Assigned | YMAX COMMUNICATIONS CORP. - MD | 281E | GAITHERSBG | MD |
| 2009-07-14 | 240-654-6XXX | 6000–6999 | Assigned | YMAX COMMUNICATIONS CORP. - MD | 281E | GAITHERSBG | MD |
| 2009-07-07 | 240-587-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | LEONARDTN | MD |
| 2009-07-06 | 240-397-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | FREDERICK | MD |
| 2009-07-01 | 240-280-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | LAUREL236 | MD |
| 2009-07-01 | 240-316-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSHNGTNZN2 | MD |
| 2009-06-15 | 240-382-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | 7325 | HAGERSTOWN | MD |
| 2009-06-02 | 240-581-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | LAUREL236 | MD |
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.