NumberResearchThousands-blocks in 515-715
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 515-715 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 515 blocks
Most active assignees, all time — NPA 515
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 |
|---|---|---|---|---|---|---|---|
| 2016-06-20 | 515-715-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | AMES | IA |
| 2017-05-02 | 515-715-1XXX | 1000–1999 | Assigned | MCC TELEPHONY OF IOWA, LLC - IA | 751F | AMES | IA |
| 2016-08-26 | 515-715-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | AMES | IA |
| 2016-09-02 | 515-715-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | AMES | IA |
| 2016-11-16 | 515-715-4XXX | 4000–4999 | Assigned | ONVOY, LLC - IA | 221F | AMES | IA |
| 2017-02-07 | 515-715-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | AMES | IA |
| 2017-05-31 | 515-715-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | AMES | IA |
| 2017-05-31 | 515-715-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | AMES | IA |
| 2017-05-31 | 515-715-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | AMES | IA |
| 2018-06-05 | 515-715-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | AMES | IA |
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.