NumberResearchThousands-blocks in 636-356
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 636-356 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 636-356-0XXX | 0000–0999 | Reserved | BRIGHTSPEED OF MISSOURI, LLC | 9787 | MOSCOW ML | MO |
| — | 636-356-1XXX | 1000–1999 | Reserved | BRIGHTSPEED OF MISSOURI, LLC | 9787 | MOSCOW ML | MO |
| 2020-07-09 | 636-356-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | MOSCOW ML | MO |
| 2008-06-10 | 636-356-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | MOSCOW ML | MO |
| — | 636-356-4XXX | 4000–4999 | Reserved | BRIGHTSPEED OF MISSOURI, LLC | 9787 | MOSCOW ML | MO |
| — | 636-356-5XXX | 5000–5999 | Available | MOSCOW ML | MO | ||
| 2013-09-16 | 636-356-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MOSCOW ML | MO |
| — | 636-356-7XXX | 7000–7999 | Available | MOSCOW ML | MO | ||
| 2025-05-07 | 636-356-8XXX | 8000–8999 | Assigned | TERRA NOVA TELECOM INC. | 145J | MOSCOW ML | MO |
| — | 636-356-9XXX | 9000–9999 | Reserved | BRIGHTSPEED OF MISSOURI, LLC | 9787 | MOSCOW ML | MO |
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.