NumberResearchRecent thousands-block assignments
7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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, last 30 days — NPA 615
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-02-19 | 615-334-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WHITEHOUSE | TN |
| 2014-02-19 | 615-434-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ASHLAND CY | TN |
| 2014-02-19 | 615-448-3XXX | 3000–3999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GOODLETSVL | TN |
| 2014-02-19 | 615-450-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HARTSVILLE | TN |
| 2014-02-19 | 615-486-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CARTHAGE | TN |
| 2014-02-19 | 615-502-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GALLATIN | TN |
| 2014-02-19 | 615-608-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | OLDHICKORY | TN |
| 2014-02-19 | 615-654-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CRSPLORLND | TN |
| 2014-02-19 | 615-667-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SPRINGFLD | TN |
| 2014-02-19 | 615-671-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CHARLOTTE | TN |
| 2014-02-19 | 615-682-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ADMSCDARHL | TN |
| 2014-02-19 | 615-697-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WATERTOWN | TN |
| 2014-02-19 | 615-757-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HENDERSNVL | TN |
| 2014-02-19 | 615-784-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LEBANON | TN |
| 2014-02-19 | 615-863-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GREENBRIER | TN |
| 2014-02-19 | 615-905-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FRANKLIN | TN |
| 2014-02-17 | 615-486-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - TN | 124F | CARTHAGE | TN |
| 2014-02-13 | 615-913-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | NASHVILLE | TN |
| 2014-02-11 | 615-203-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | MURFREESBO | TN |
| 2014-02-07 | 615-203-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | MURFREESBO | TN |
| 2014-02-07 | 615-203-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | MURFREESBO | TN |
| 2014-02-07 | 615-450-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | HARTSVILLE | TN |
| 2014-02-05 | 615-679-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | NASHVILLE | TN |
| 2014-02-04 | 615-997-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | NASHVILLE | TN |
| 2014-01-31 | 615-490-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | NASHVILLE | TN |
| 2014-01-16 | 615-805-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | PORTLAND | TN |
| 2014-01-15 | 615-375-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | DICKSON | TN |
| 2014-01-14 | 615-905-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | FRANKLIN | TN |
| 2014-01-10 | 615-393-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NASHVILLE | TN |
| 2014-01-10 | 615-393-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NASHVILLE | TN |
| 2014-01-10 | 615-393-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NASHVILLE | TN |
| 2014-01-10 | 615-393-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NASHVILLE | TN |
| 2014-01-10 | 615-393-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NASHVILLE | TN |
| 2014-01-10 | 615-393-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NASHVILLE | TN |
| 2014-01-06 | 615-561-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | LAFAYETTE | TN |
| 2013-12-27 | 615-682-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TN | 4806 | ADMSCDARHL | TN |
| 2013-12-18 | 615-203-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | MURFREESBO | TN |
| 2013-12-10 | 615-280-8XXX | 8000–8999 | Assigned | ONVOY, LLC - TN | 525E | LAVERGNE | TN |
| 2013-12-10 | 615-288-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MT JULIET | TN |
| 2013-12-10 | 615-375-9XXX | 9000–9999 | Assigned | COMMIO, LLC | 939H | DICKSON | TN |
| 2013-12-10 | 615-398-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN | 7977 | PLEASANTVW | TN |
| 2013-12-10 | 615-422-8XXX | 8000–8999 | Assigned | COMMIO, LLC | 939H | KINGSTNSPG | TN |
| 2013-12-10 | 615-434-6XXX | 6000–6999 | Assigned | COMMIO, LLC | 939H | ASHLAND CY | TN |
| 2013-12-10 | 615-486-6XXX | 6000–6999 | Assigned | ONVOY, LLC - TN | 525E | CARTHAGE | TN |
| 2013-12-10 | 615-490-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NASHVILLE | TN |
| 2013-12-10 | 615-490-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NASHVILLE | TN |
| 2013-12-10 | 615-490-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NASHVILLE | TN |
| 2013-12-10 | 615-490-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | NASHVILLE | TN |
| 2013-12-10 | 615-505-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | EASTSANGO | TN |
| 2013-12-10 | 615-544-0XXX | 0000–0999 | Assigned | ONVOY, LLC - TN | 525E | FAIRVIEW | 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.