NumberResearchThousands-blocks in 615-819
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 615-819 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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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2008-07-11 | 615-819-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | NOLENSVL | TN |
| 2018-02-22 | 615-819-1XXX | 1000–1999 | Assigned | ONVOY, LLC - TN | 525E | NOLENSVL | TN |
| 2012-06-18 | 615-819-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | NOLENSVL | TN |
| 2017-05-23 | 615-819-3XXX | 3000–3999 | Assigned | UNITED TELEPHONE COMPANY DBA UNITED COMMUNICATIONS | 0581 | NOLENSVL | TN |
| 2016-02-24 | 615-819-4XXX | 4000–4999 | Assigned | ONVOY, LLC - TN | 525E | NOLENSVL | TN |
| 2016-02-24 | 615-819-5XXX | 5000–5999 | Assigned | ONVOY, LLC - TN | 525E | NOLENSVL | TN |
| 2018-02-22 | 615-819-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | NOLENSVL | TN |
| 2017-05-23 | 615-819-7XXX | 7000–7999 | Assigned | UNITED TELEPHONE COMPANY DBA UNITED COMMUNICATIONS | 0581 | NOLENSVL | TN |
| 2017-05-23 | 615-819-8XXX | 8000–8999 | Assigned | UNITED TELEPHONE COMPANY DBA UNITED COMMUNICATIONS | 0581 | NOLENSVL | TN |
| 2017-05-23 | 615-819-9XXX | 9000–9999 | Assigned | UNITED TELEPHONE COMPANY DBA UNITED COMMUNICATIONS | 0581 | NOLENSVL | TN |
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.