NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/25/2026
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 215
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2006-11-09 | 215-616-7XXX | 7000–7999 | Assigned | CTSI, INC. - PA | 7513 | NORTHWALES | PA |
| 2006-10-03 | 215-249-2XXX | 2000–2999 | Assigned | CTSI, INC. - PA | 7513 | DUBLIN | PA |
| 2006-10-03 | 215-369-6XXX | 6000–6999 | Assigned | CTSI, INC. - PA | 7513 | YARDLEY | PA |
| 2006-10-03 | 215-541-6XXX | 6000–6999 | Assigned | CTSI, INC. - PA | 7513 | PENNSBURG | PA |
| 2006-10-03 | 215-660-6XXX | 6000–6999 | Assigned | CTSI, INC. - PA | 7513 | SOUDERTON | PA |
| 2006-10-03 | 215-712-3XXX | 3000–3999 | Assigned | CTSI, INC. - PA | 7513 | LINELXNGTN | PA |
| 2006-10-03 | 215-853-5XXX | 5000–5999 | Assigned | CTSI, INC. - PA | 7513 | LANSDALE | PA |
| 2006-10-03 | 215-933-7XXX | 7000–7999 | Assigned | CTSI, INC. - PA | 7513 | DOYLESTOWN | PA |
| 2005-06-14 | 215-420-3XXX | 3000–3999 | Assigned | CTSI, INC. - PA | 7513 | PHPHSBZN39 | PA |
| 2005-06-14 | 215-664-3XXX | 3000–3999 | Assigned | CTSI, INC. - PA | 7513 | PHPHSBZN33 | PA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.