NumberResearchThousands-blocks in 618-589
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 618-589 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
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 618-589-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | O FALLON | IL |
| 2005-01-03 | 618-589-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | O FALLON | IL |
| 2005-01-11 | 618-589-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | O FALLON | IL |
| 2006-06-22 | 618-589-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | O FALLON | IL |
| 2003-08-04 | 618-589-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | O FALLON | IL |
| 2024-01-31 | 618-589-5XXX | 5000–5999 | Assigned | ONVOY, LLC | 224C | O FALLON | IL |
| 2011-10-04 | 618-589-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | O FALLON | IL |
| 2008-01-11 | 618-589-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | O FALLON | IL |
| 2013-01-04 | 618-589-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | O FALLON | IL |
| 2008-03-27 | 618-589-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | O FALLON | 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.