NumberResearchRecent thousands-block assignments
0 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, all time — NPA 219
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-07-31 | 219-230-7XXX | 7000–7999 | Assigned | RCN TELECOM SERVICES OF ILLINOIS, LLC | 511K | HAMMOND | IN |
| 2007-07-02 | 219-554-5XXX | 5000–5999 | Assigned | RCN TELECOM SERVICES OF ILLINOIS, LLC | 511K | HAMMOND | IN |
| 2007-07-02 | 219-595-1XXX | 1000–1999 | Assigned | RCN TELECOM SERVICES OF ILLINOIS, LLC | 511K | HIGHLAND | IN |
| 2007-07-02 | 219-655-2XXX | 2000–2999 | Assigned | RCN TELECOM SERVICES OF ILLINOIS, LLC | 511K | WHITING | IN |
| 2006-11-21 | 219-595-4XXX | 4000–4999 | Assigned | RCN TELECOM SERVICES OF ILLINOIS, LLC | 511K | HIGHLAND | IN |
| 2004-08-02 | 219-228-6XXX | 6000–6999 | Assigned | RCN TELECOM SERVICES OF ILLINOIS, LLC | 511K | HAMMOND | IN |
| 2004-08-02 | 219-655-4XXX | 4000–4999 | Assigned | RCN TELECOM SERVICES OF ILLINOIS, LLC | 511K | WHITING | IN |
| 2004-08-02 | 219-961-6XXX | 6000–6999 | Assigned | RCN TELECOM SERVICES OF ILLINOIS, LLC | 511K | HIGHLAND | IN |
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.