NumberResearchThousands-blocks in 615-435
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 615-435 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 615 blocks
Most active assignees, all time — NPA 615
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 615-435-0XXX | 0000–0999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | FRANKLIN | TN |
| 2005-08-23 | 615-435-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | FRANKLIN | TN |
| 2013-01-03 | 615-435-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | FRANKLIN | TN |
| 2006-03-21 | 615-435-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | FRANKLIN | TN |
| — | 615-435-4XXX | 4000–4999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | FRANKLIN | TN |
| 2003-06-20 | 615-435-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | FRANKLIN | TN |
| 2003-06-20 | 615-435-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | FRANKLIN | TN |
| 2004-08-27 | 615-435-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | FRANKLIN | TN |
| 2004-04-07 | 615-435-8XXX | 8000–8999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2012-05-30 | 615-435-9XXX | 9000–9999 | Assigned | ONVOY, LLC - TN | 525E | FRANKLIN | TN |
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.