NumberResearchRecent thousands-block assignments
0 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, all time — NPA 667
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-10-24 | 667-455-5XXX | 5000–5999 | Assigned | VONAGE AMERICA LLC | 197D | EDGEWOOD | MD |
| 2023-10-17 | 667-454-2XXX | 2000–2999 | Assigned | VONAGE AMERICA LLC | 197D | BEL AIR | MD |
| 2022-09-07 | 667-338-9XXX | 9000–9999 | Assigned | VONAGE AMERICA LLC | 197D | CROFTON | MD |
| 2022-06-10 | 667-319-0XXX | 0000–0999 | Assigned | VONAGE AMERICA LLC | 197D | CHESTERTN | MD |
| 2022-06-10 | 667-775-1XXX | 1000–1999 | Assigned | VONAGE AMERICA LLC | 197D | MILLINGTON | MD |
| 2020-05-06 | 667-280-3XXX | 3000–3999 | Assigned | VONAGE AMERICA LLC | 197D | ELLICOTTCY | MD |
| 2020-05-06 | 667-280-7XXX | 7000–7999 | Assigned | VONAGE AMERICA LLC | 197D | ELLICOTTCY | MD |
| 2020-05-04 | 667-299-0XXX | 0000–0999 | Assigned | VONAGE AMERICA LLC | 197D | ANNAPOLIS | MD |
| 2020-05-04 | 667-299-1XXX | 1000–1999 | Assigned | VONAGE AMERICA LLC | 197D | ANNAPOLIS | MD |
| 2020-05-01 | 667-278-0XXX | 0000–0999 | Assigned | VONAGE AMERICA LLC | 197D | TOWSON | MD |
| 2020-05-01 | 667-278-1XXX | 1000–1999 | Assigned | VONAGE AMERICA LLC | 197D | TOWSON | MD |
| 2018-12-13 | 667-257-4XXX | 4000–4999 | Assigned | VONAGE AMERICA LLC | 197D | COLUMBIA | MD |
| 2018-11-15 | 667-257-0XXX | 0000–0999 | Assigned | VONAGE AMERICA LLC | 197D | COLUMBIA | MD |
| 2018-11-15 | 667-257-1XXX | 1000–1999 | Assigned | VONAGE AMERICA LLC | 197D | COLUMBIA | MD |
| 2018-11-15 | 667-257-2XXX | 2000–2999 | Assigned | VONAGE AMERICA LLC | 197D | COLUMBIA | MD |
| 2018-11-15 | 667-257-3XXX | 3000–3999 | Assigned | VONAGE AMERICA LLC | 197D | COLUMBIA | MD |
| 2018-11-12 | 667-300-2XXX | 2000–2999 | Assigned | VONAGE AMERICA LLC | 197D | COLUMBIA | MD |
| 2018-11-12 | 667-300-4XXX | 4000–4999 | Assigned | VONAGE AMERICA LLC | 197D | COLUMBIA | MD |
| 2018-11-12 | 667-300-5XXX | 5000–5999 | Assigned | VONAGE AMERICA LLC | 197D | COLUMBIA | MD |
| 2018-11-12 | 667-300-6XXX | 6000–6999 | Assigned | VONAGE AMERICA LLC | 197D | COLUMBIA | MD |
| 2018-11-12 | 667-300-7XXX | 7000–7999 | Assigned | VONAGE AMERICA LLC | 197D | COLUMBIA | MD |
| 2018-06-04 | 667-235-0XXX | 0000–0999 | Assigned | VONAGE AMERICA LLC | 197D | SALISBURY | MD |
| 2017-08-07 | 667-223-0XXX | 0000–0999 | Assigned | VONAGE AMERICA LLC | 197D | BALTIMORE | MD |
| 2017-08-07 | 667-223-1XXX | 1000–1999 | Assigned | VONAGE AMERICA LLC | 197D | BALTIMORE | 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.