NumberResearchRecent thousands-block assignments
70 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2015-09-09 | 667-303-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BALTIMORE | MD |
| 2015-09-09 | 667-312-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BALTIMORE | MD |
| 2015-09-09 | 667-312-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BALTIMORE | MD |
| 2015-09-09 | 667-312-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BALTIMORE | MD |
| 2015-08-18 | 667-222-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | ARGRGBSNIS | MD |
| 2015-08-18 | 667-222-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | ARGRGBSNIS | MD |
| 2015-08-18 | 667-222-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | ARGRGBSNIS | MD |
| 2015-08-18 | 667-444-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-08-18 | 667-444-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-08-18 | 667-812-0XXX | 0000–0999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WATERLO236 | MD |
| 2015-08-18 | 667-812-1XXX | 1000–1999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WATERLO236 | MD |
| 2015-08-18 | 667-812-2XXX | 2000–2999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WATERLO236 | MD |
| 2015-08-18 | 667-812-3XXX | 3000–3999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WATERLO236 | MD |
| 2015-08-18 | 667-812-4XXX | 4000–4999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WATERLO236 | MD |
| 2015-08-18 | 667-812-5XXX | 5000–5999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WATERLO236 | MD |
| 2015-08-18 | 667-812-6XXX | 6000–6999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WATERLO236 | MD |
| 2015-08-18 | 667-812-7XXX | 7000–7999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WATERLO236 | MD |
| 2015-08-18 | 667-812-8XXX | 8000–8999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WATERLO236 | MD |
| 2015-08-18 | 667-812-9XXX | 9000–9999 | Assigned | VERIZON MARYLAND, INC. | 9212 | WATERLO236 | MD |
| 2015-08-05 | 667-228-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | ABERDEEN | MD |
| 2015-07-31 | 667-218-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | BALTIMORE | MD |
| 2015-07-30 | 667-770-1XXX | 1000–1999 | Assigned | AIRUS, INC. - MD | 691H | BALTIMORE | MD |
| 2015-07-27 | 667-930-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | BALTIMORE | MD |
| 2015-07-10 | 667-303-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BALTIMORE | MD |
| 2015-07-10 | 667-303-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BALTIMORE | MD |
| 2015-07-10 | 667-303-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BALTIMORE | MD |
| 2015-07-10 | 667-303-6XXX | 6000–6999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BALTIMORE | MD |
| 2015-07-10 | 667-303-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BALTIMORE | MD |
| 2015-07-10 | 667-303-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | BALTIMORE | MD |
| 2015-07-08 | 667-218-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MD | 6119 | BALTIMORE | MD |
| 2015-06-30 | 667-999-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | ELKRIDGE | MD |
| 2015-06-30 | 667-999-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | ELKRIDGE | MD |
| 2015-06-30 | 667-999-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | ELKRIDGE | MD |
| 2015-06-30 | 667-999-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MD | 876D | ELKRIDGE | MD |
| 2015-06-30 | 667-999-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | ELKRIDGE | MD |
| 2015-06-30 | 667-999-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MD | 876D | ELKRIDGE | MD |
| 2015-06-25 | 667-239-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-239-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-239-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-239-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-239-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-239-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-309-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-309-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-309-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-309-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-309-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-888-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-888-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
| 2015-06-25 | 667-888-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MD | 876D | BALTIMORE | MD |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.