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 615
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-06-30 | 615-919-6XXX | 6000–6999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2015-06-30 | 615-919-7XXX | 7000–7999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2015-06-30 | 615-919-8XXX | 8000–8999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2013-05-29 | 615-920-7XXX | 7000–7999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2013-05-29 | 615-920-8XXX | 8000–8999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2012-04-23 | 615-761-1XXX | 1000–1999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2012-04-23 | 615-761-2XXX | 2000–2999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2012-04-23 | 615-761-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2011-09-20 | 615-807-8XXX | 8000–8999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2011-09-20 | 615-807-9XXX | 9000–9999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2010-05-04 | 615-617-1XXX | 1000–1999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MURFREESBO | TN |
| 2008-08-22 | 615-328-9XXX | 9000–9999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | GALLATIN | TN |
| 2008-08-06 | 615-962-6XXX | 6000–6999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MURFREESBO | TN |
| 2008-06-20 | 615-328-0XXX | 0000–0999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | GALLATIN | TN |
| 2008-06-20 | 615-328-1XXX | 1000–1999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | GALLATIN | TN |
| 2008-06-20 | 615-328-2XXX | 2000–2999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | GALLATIN | TN |
| 2008-02-19 | 615-875-0XXX | 0000–0999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2008-02-19 | 615-875-1XXX | 1000–1999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2008-02-19 | 615-875-2XXX | 2000–2999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2008-02-19 | 615-875-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2008-02-19 | 615-875-4XXX | 4000–4999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2008-02-19 | 615-875-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2008-02-19 | 615-875-6XXX | 6000–6999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2008-02-19 | 615-875-7XXX | 7000–7999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2008-02-19 | 615-875-8XXX | 8000–8999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2008-02-19 | 615-875-9XXX | 9000–9999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NASHVILLE | TN |
| 2008-02-07 | 615-967-2XXX | 2000–2999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | SMYRNA | TN |
| 2008-02-07 | 615-967-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | SMYRNA | TN |
| 2007-01-31 | 615-745-2XXX | 2000–2999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | PORTLAND | TN |
| 2006-12-01 | 615-392-7XXX | 7000–7999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | NSPRINGHIL | TN |
| 2006-11-21 | 615-328-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | GALLATIN | TN |
| 2006-11-21 | 615-328-4XXX | 4000–4999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | GALLATIN | TN |
| 2006-11-21 | 615-328-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | GALLATIN | TN |
| 2006-11-21 | 615-328-6XXX | 6000–6999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | GALLATIN | TN |
| 2006-11-21 | 615-328-7XXX | 7000–7999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | GALLATIN | TN |
| 2006-11-21 | 615-328-8XXX | 8000–8999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | GALLATIN | TN |
| 2006-10-05 | 615-745-8XXX | 8000–8999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | PORTLAND | TN |
| 2006-09-25 | 615-447-6XXX | 6000–6999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | HENDERSNVL | TN |
| 2006-09-25 | 615-465-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2006-04-12 | 615-725-0XXX | 0000–0999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2006-04-12 | 615-725-1XXX | 1000–1999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2006-04-12 | 615-725-2XXX | 2000–2999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2006-04-12 | 615-725-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2006-04-12 | 615-725-4XXX | 4000–4999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2006-04-12 | 615-725-5XXX | 5000–5999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2006-04-12 | 615-725-6XXX | 6000–6999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2006-04-12 | 615-725-7XXX | 7000–7999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2006-04-12 | 615-725-8XXX | 8000–8999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2006-04-12 | 615-725-9XXX | 9000–9999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
| 2005-11-14 | 615-472-3XXX | 3000–3999 | Assigned | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | FRANKLIN | TN |
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.