NumberResearchThousands-blocks in 618-309
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 618-309 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
Aug 2026
Jul 2026
Jun 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2020-11-20 | 618-309-0XXX | 0000–0999 | Assigned | STRATUS NETWORKS | 495J | METROPOLIS | IL |
| 2007-08-30 | 618-309-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | METROPOLIS | IL |
| 2007-09-14 | 618-309-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | METROPOLIS | IL |
| 2009-06-09 | 618-309-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | METROPOLIS | IL |
| 2004-06-03 | 618-309-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | METROPOLIS | IL |
| 2011-01-14 | 618-309-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | METROPOLIS | IL |
| 2015-04-22 | 618-309-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | METROPOLIS | IL |
| 2013-07-25 | 618-309-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | METROPOLIS | IL |
| 2019-08-09 | 618-309-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | METROPOLIS | IL |
| 2003-10-14 | 618-309-9XXX | 9000–9999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | METROPOLIS | IL |
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.