NumberResearchThousands-blocks in 636-627
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 636-627 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 636 blocks
Most active assignees, all time — NPA 636
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 636-627-0XXX | 0000–0999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 7218 | ST CHARLES | MO |
| 2006-07-21 | 636-627-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ST CHARLES | MO |
| 2010-11-09 | 636-627-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ST CHARLES | MO |
| — | 636-627-3XXX | 3000–3999 | Available | ST CHARLES | MO | ||
| — | 636-627-4XXX | 4000–4999 | Available | ST CHARLES | MO | ||
| 2026-01-12 | 636-627-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ST CHARLES | MO |
| 2010-11-09 | 636-627-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ST CHARLES | MO |
| 2006-06-22 | 636-627-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST CHARLES | MO |
| 2006-06-22 | 636-627-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST CHARLES | MO |
| 2005-11-28 | 636-627-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ST CHARLES | MO |
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.