NumberResearchThousands-blocks in 515-552
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 515-552 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
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Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-08-16 | 515-552-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | INDIANOLA | IA |
| 2022-06-20 | 515-552-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | INDIANOLA | IA |
| 2018-05-23 | 515-552-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANOLA | IA |
| 2020-05-04 | 515-552-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | INDIANOLA | IA |
| 2024-10-11 | 515-552-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANOLA | IA |
| 2018-05-02 | 515-552-5XXX | 5000–5999 | Assigned | INTEGRATED PATH COMMUNCATIONS, LLC - IA | 544H | INDIANOLA | IA |
| 2022-08-03 | 515-552-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - IA | 985E | INDIANOLA | IA |
| 2017-03-02 | 515-552-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | INDIANOLA | IA |
| 2018-06-05 | 515-552-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | INDIANOLA | IA |
| 2021-12-30 | 515-552-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | INDIANOLA | 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.