NumberResearchRecent thousands-block assignments
70 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 667
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 |
|---|---|---|---|---|---|---|---|
| 2016-08-09 | 667-367-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | WESTMINSTR | MD |
| 2016-08-02 | 667-458-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF MARYLAND, LLC | 568G | ANNAPOLIS | MD |
| 2016-08-01 | 667-771-2XXX | 2000–2999 | Assigned | NUSO, LLC | 551G | BALTIMORE | MD |
| 2016-08-01 | 667-771-3XXX | 3000–3999 | Assigned | NUSO, LLC | 551G | BALTIMORE | MD |
| 2016-08-01 | 667-771-4XXX | 4000–4999 | Assigned | NUSO, LLC | 551G | BALTIMORE | MD |
| 2016-08-01 | 667-771-5XXX | 5000–5999 | Assigned | NUSO, LLC | 551G | BALTIMORE | MD |
| 2016-08-01 | 667-771-6XXX | 6000–6999 | Assigned | NUSO, LLC | 551G | BALTIMORE | MD |
| 2016-07-22 | 667-305-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2016-07-22 | 667-305-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | PIKESVILLE | MD |
| 2016-07-21 | 667-771-0XXX | 0000–0999 | Assigned | INTRADO COMMUNICATIONS, LLC | 820C | BALTIMORE | MD |
| 2016-07-18 | 667-219-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | BALTIMORE | MD |
| 2016-07-18 | 667-600-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | BALTIMORE | MD |
| 2016-07-18 | 667-600-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | BALTIMORE | MD |
| 2016-07-18 | 667-600-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | BALTIMORE | MD |
| 2016-07-18 | 667-777-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | SEVERNA PK | MD |
| 2016-07-12 | 667-229-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | ABERDEEN | MD |
| 2016-07-06 | 667-225-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MD | 876D | ANNAPOLIS | MD |
| 2016-07-06 | 667-225-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | ANNAPOLIS | MD |
| 2016-07-06 | 667-458-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | ANNAPOLIS | MD |
| 2016-07-06 | 667-666-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | WEST RIVER | MD |
| 2016-07-06 | 667-666-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MD | 876D | WEST RIVER | MD |
| 2016-06-23 | 667-321-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | PRINCEFRCK | MD |
| 2016-06-23 | 667-367-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WESTMINSTR | MD |
| 2016-06-21 | 667-803-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | SOLOMONS | MD |
| 2016-06-16 | 667-201-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BEL AIR | MD |
| 2016-06-16 | 667-305-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | PIKESVILLE | MD |
| 2016-05-26 | 667-367-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | WESTMINSTR | MD |
| 2016-05-25 | 667-281-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF MARYLAND, LLC | 568G | SALISBURY | MD |
| 2016-05-25 | 667-281-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF MARYLAND, LLC | 568G | SALISBURY | MD |
| 2016-05-24 | 667-706-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | ELKTON | MD |
| 2016-05-18 | 667-200-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | COLUMBIA | MD |
| 2016-05-18 | 667-200-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | COLUMBIA | MD |
| 2016-05-10 | 667-458-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | ANNAPOLIS | MD |
| 2016-05-05 | 667-201-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | BEL AIR | MD |
| 2016-05-04 | 667-666-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | WEST RIVER | MD |
| 2016-05-04 | 667-666-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | WEST RIVER | MD |
| 2016-05-03 | 667-229-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | ABERDEEN | MD |
| 2016-05-03 | 667-260-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BALTIMORE | MD |
| 2016-05-03 | 667-305-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PIKESVILLE | MD |
| 2016-05-03 | 667-333-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | ARGRGBSNIS | MD |
| 2016-05-03 | 667-367-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | WESTMINSTR | MD |
| 2016-05-03 | 667-771-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BALTIMORE | MD |
| 2016-05-03 | 667-802-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | CATONSVL | MD |
| 2016-04-20 | 667-202-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | ELKTON | MD |
| 2016-04-20 | 667-202-3XXX | 3000–3999 | Assigned | HD CARRIER LLC | 321J | ELKTON | MD |
| 2016-04-20 | 667-202-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | ELKTON | MD |
| 2016-04-20 | 667-202-5XXX | 5000–5999 | Assigned | HD CARRIER LLC | 321J | ELKTON | MD |
| 2016-04-20 | 667-202-6XXX | 6000–6999 | Assigned | HD CARRIER LLC | 321J | ELKTON | MD |
| 2016-04-20 | 667-202-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | ELKTON | MD |
| 2016-04-20 | 667-202-8XXX | 8000–8999 | Assigned | HD CARRIER LLC | 321J | ELKTON | 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.