NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026
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 610
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2013-10-23 | 610-298-7XXX | 7000–7999 | Assigned | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | 7615 | NEWTRIPOLI | PA |
| 2009-06-17 | 610-735-1XXX | 1000–1999 | Assigned | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | 7615 | IRONTON | PA |
| 2008-02-19 | 610-849-2XXX | 2000–2999 | Assigned | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | 7615 | BETHLEHEM | PA |
| 2007-06-28 | 610-510-3XXX | 3000–3999 | Assigned | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | 7615 | RIEGELSVL | PA |
| 2007-06-28 | 610-760-3XXX | 3000–3999 | Assigned | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | 7615 | SLATINGTON | PA |
| 2007-05-10 | 610-452-9XXX | 9000–9999 | Assigned | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | 7615 | BANGOR | PA |
| 2007-05-10 | 610-881-4XXX | 4000–4999 | Assigned | RCN TELECOM SERVICES OF PENNSYLVANIA, INC. | 7615 | PEN ARGYL | PA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.