NumberResearchThousands-blocks in 630-821
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 630-821 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
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2005-12-28 | 630-821-0XXX | 0000–0999 | Assigned | ACCESS ONE, INC. - IL | 5447 | WARRENVL | IL |
| 2021-11-19 | 630-821-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WARRENVL | IL |
| 2002-07-23 | 630-821-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WARRENVL | IL |
| 2002-07-23 | 630-821-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WARRENVL | IL |
| 2000-08-17 | 630-821-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WARRENVL | IL |
| — | 630-821-5XXX | 5000–5999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WARRENVL | IL |
| 2005-04-05 | 630-821-6XXX | 6000–6999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | WARRENVL | IL |
| 2003-06-25 | 630-821-7XXX | 7000–7999 | Assigned | ILLINOIS BELL TEL CO | 9329 | WARRENVL | IL |
| 2004-10-13 | 630-821-8XXX | 8000–8999 | Assigned | FIRST COMMUNICATIONS, LLC | 460K | WARRENVL | IL |
| — | 630-821-9XXX | 9000–9999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WARRENVL | 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.