NumberResearchThousands-blocks in 254-987
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 254-987 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 254 blocks
Most active assignees, all time — NPA 254
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2013-02-18 | 254-987-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | COPPERASCV | TX |
| 2015-03-11 | 254-987-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | COPPERASCV | TX |
| 2015-03-11 | 254-987-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | COPPERASCV | TX |
| 2016-03-17 | 254-987-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | COPPERASCV | TX |
| 2018-02-16 | 254-987-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | COPPERASCV | TX |
| 2006-01-18 | 254-987-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | COPPERASCV | TX |
| 2006-10-20 | 254-987-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | COPPERASCV | TX |
| 2014-04-23 | 254-987-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | COPPERASCV | TX |
| 2018-02-16 | 254-987-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | COPPERASCV | TX |
| 2013-02-18 | 254-987-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | COPPERASCV | TX |
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.