NumberResearchThousands-blocks in 602-644
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 602-644 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 602 blocks
Most active assignees, all time — NPA 602
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2011-12-13 | 602-644-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2010-01-20 | 602-644-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - AZ | 587F | PHOENIX | AZ |
| 2011-03-10 | 602-644-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | PHOENIX | AZ |
| — | 602-644-3XXX | 3000–3999 | Reserved | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-644-4XXX | 4000–4999 | Reserved | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-644-5XXX | 5000–5999 | Reserved | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| 2014-03-06 | 602-644-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | PHOENIX | AZ |
| — | 602-644-7XXX | 7000–7999 | Reserved | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| — | 602-644-8XXX | 8000–8999 | Reserved | QWEST CORPORATION | 9636 | PHOENIX | AZ |
| 2011-11-08 | 602-644-9XXX | 9000–9999 | Assigned | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
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.