NumberResearchRecent thousands-block assignments
26 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 636
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2005-03-17 | 636-584-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UNION | MO |
| 2005-03-17 | 636-584-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UNION | MO |
| 2005-03-10 | 636-237-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | CHESTERFLD | MO |
| 2005-03-01 | 636-226-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | VALLEYPARK | MO |
| 2005-03-01 | 636-226-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | VALLEYPARK | MO |
| 2005-03-01 | 636-226-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | VALLEYPARK | MO |
| 2005-03-01 | 636-226-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | VALLEYPARK | MO |
| 2005-03-01 | 636-278-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | ST PETERS | MO |
| 2005-03-01 | 636-279-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | ST PETERS | MO |
| 2005-03-01 | 636-279-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ST PETERS | MO |
| 2005-03-01 | 636-290-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | TROY | MO |
| 2005-03-01 | 636-345-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | HARVESTER | MO |
| 2005-03-01 | 636-345-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | HARVESTER | MO |
| 2005-03-01 | 636-345-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | HARVESTER | MO |
| 2005-03-01 | 636-345-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | HARVESTER | MO |
| 2005-03-01 | 636-345-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | HARVESTER | MO |
| 2005-03-01 | 636-660-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | FENTON | MO |
| 2005-03-01 | 636-697-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | ST PETERS | MO |
| 2005-03-01 | 636-970-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | ST PETERS | MO |
| 2005-02-22 | 636-352-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | ST CHARLES | MO |
| 2005-02-22 | 636-667-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WASHINGTON | MO |
| 2005-02-08 | 636-634-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ST CHARLES | MO |
| 2005-02-07 | 636-707-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CEDAR HILL | MO |
| 2005-02-07 | 636-887-3XXX | 3000–3999 | Assigned | BRIGHTSPEED OF MISSOURI, LLC | 9787 | WENTZVILLE | MO |
| 2005-02-03 | 636-231-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | WASHINGTON | MO |
| 2005-02-03 | 636-232-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | FSSCRSTLCY | MO |
| 2005-02-03 | 636-234-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | UNION | MO |
| 2005-02-03 | 636-243-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | DE SOTO | MO |
| 2005-02-03 | 636-402-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | GRAYSUMMIT | MO |
| 2005-02-03 | 636-481-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | HILLSBORO | MO |
| 2005-01-25 | 636-266-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | WASHINGTON | MO |
| 2005-01-25 | 636-357-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WENTZVILLE | MO |
| 2005-01-25 | 636-552-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MANCHESTER | MO |
| 2005-01-25 | 636-642-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | IMPERIAL | MO |
| 2005-01-25 | 636-887-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WENTZVILLE | MO |
| 2005-01-21 | 636-755-2XXX | 2000–2999 | Assigned | BRIGHTSPEED OF MISSOURI, LLC | 9787 | DARDENNE | MO |
| 2005-01-21 | 636-755-3XXX | 3000–3999 | Assigned | BRIGHTSPEED OF MISSOURI, LLC | 9787 | DARDENNE | MO |
| 2005-01-18 | 636-352-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | ST CHARLES | MO |
| 2005-01-14 | 636-333-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MAXVILLE | MO |
| 2005-01-14 | 636-524-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | FSSCRSTLCY | MO |
| 2005-01-14 | 636-642-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | IMPERIAL | MO |
| 2005-01-04 | 636-333-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | MAXVILLE | MO |
| 2005-01-04 | 636-667-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | WASHINGTON | MO |
| 2004-12-16 | 636-442-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | HARVESTER | MO |
| 2004-12-16 | 636-489-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CHESTERFLD | MO |
| 2004-12-16 | 636-764-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | FENTON | MO |
| 2004-12-14 | 636-393-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | PACIFIC | MO |
| 2004-12-14 | 636-887-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WENTZVILLE | MO |
| 2004-12-01 | 636-388-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | UNION | MO |
| 2004-12-01 | 636-565-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | DE SOTO | 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.