NumberResearchThousands-blocks in 564-221
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 564-221 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 564 blocks
Most active assignees, all time — NPA 564
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-05-26 | 564-221-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | BATTLEGRND | WA |
| — | 564-221-1XXX | 1000–1999 | Available | BATTLEGRND | WA | ||
| 2022-05-02 | 564-221-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | BATTLEGRND | WA |
| 2023-04-13 | 564-221-3XXX | 3000–3999 | Assigned | ONVOY, LLC - WA | 483E | BATTLEGRND | WA |
| 2023-04-13 | 564-221-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WA | 483E | BATTLEGRND | WA |
| — | 564-221-5XXX | 5000–5999 | Available | BATTLEGRND | WA | ||
| — | 564-221-6XXX | 6000–6999 | Available | BATTLEGRND | WA | ||
| 2026-07-21 | 564-221-7XXX | 7000–7999 | Assigned | EXIANT COMMUNICATIONS LLC | 114J | BATTLEGRND | WA |
| 2024-10-23 | 564-221-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF WASHINGTON, LLC - WA | 159F | BATTLEGRND | WA |
| 2022-10-19 | 564-221-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BATTLEGRND | WA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.