NumberResearchThousands-blocks in 618-471
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 618-471 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 618 blocks
Most active assignees, all time — NPA 618
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-10-21 | 618-471-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | WOOD RIVER | IL |
| 2017-05-31 | 618-471-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | WOOD RIVER | IL |
| 2016-03-02 | 618-471-2XXX | 2000–2999 | Assigned | ONVOY, LLC | 224C | WOOD RIVER | IL |
| 2013-11-26 | 618-471-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | WOOD RIVER | IL |
| 2016-03-02 | 618-471-4XXX | 4000–4999 | Assigned | ONVOY, LLC | 224C | WOOD RIVER | IL |
| 2016-08-22 | 618-471-5XXX | 5000–5999 | Assigned | ONVOY, LLC | 224C | WOOD RIVER | IL |
| 2016-08-22 | 618-471-6XXX | 6000–6999 | Assigned | ONVOY, LLC | 224C | WOOD RIVER | IL |
| 2014-04-07 | 618-471-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WOOD RIVER | IL |
| 2017-05-31 | 618-471-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | WOOD RIVER | IL |
| 2016-03-16 | 618-471-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WOOD RIVER | IL |
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.