NumberResearchThousands-blocks in 435-549
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 435-549 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 435 blocks
Most active assignees, all time — NPA 435
New assignments by month
Sep 2026
Aug 2026
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Jun 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-10-23 | 435-549-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | VERNAL | UT |
| 2023-12-18 | 435-549-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VERNAL | UT |
| 2023-10-06 | 435-549-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VERNAL | UT |
| 2019-04-09 | 435-549-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | VERNAL | UT |
| 2023-01-06 | 435-549-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VERNAL | UT |
| 2022-11-30 | 435-549-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | VERNAL | UT |
| 2020-08-26 | 435-549-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - UT | 7530 | VERNAL | UT |
| 2018-12-13 | 435-549-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VERNAL | UT |
| 2021-01-12 | 435-549-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | VERNAL | UT |
| 2018-07-03 | 435-549-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VERNAL | UT |
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.