NumberResearchThousands-blocks in 630-387
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 630-387 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 630 blocks
Most active assignees, all time — NPA 630
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 630-387-0XXX | 0000–0999 | Reserved | FIRST COMMUNICATIONS, LLC | 460K | ELBURN | IL |
| 2006-01-19 | 630-387-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | ELBURN | IL |
| 2005-01-26 | 630-387-2XXX | 2000–2999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ELBURN | IL |
| 2004-10-13 | 630-387-3XXX | 3000–3999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | ELBURN | IL |
| 2024-07-05 | 630-387-4XXX | 4000–4999 | Assigned | ONVOY, LLC | 224C | ELBURN | IL |
| 2021-10-28 | 630-387-5XXX | 5000–5999 | Assigned | ONVOY SPECTRUM, LLC | 624H | ELBURN | IL |
| 2013-04-03 | 630-387-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF ILLINOIS, LLC - IL | 063E | ELBURN | IL |
| 2006-07-11 | 630-387-7XXX | 7000–7999 | Assigned | ACCESS ONE, INC. - IL | 5447 | ELBURN | IL |
| — | 630-387-8XXX | 8000–8999 | Reserved | FIRST COMMUNICATIONS, LLC | 460K | ELBURN | IL |
| 2010-02-10 | 630-387-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - IL | 984E | ELBURN | 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.