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 |
|---|---|---|---|---|---|---|---|
| 2018-01-31 | 636-779-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANCHESTER | MO |
| 2018-01-31 | 636-779-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANCHESTER | MO |
| 2018-01-31 | 636-891-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANCHESTER | MO |
| 2018-01-02 | 636-275-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MAXVILLE | MO |
| 2017-11-03 | 636-297-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | WARRENTON | MO |
| 2017-10-31 | 636-409-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | OFALLON | MO |
| 2017-10-26 | 636-383-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | TROY | MO |
| 2017-10-16 | 636-849-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | OFALLON | MO |
| 2017-10-16 | 636-849-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | OFALLON | MO |
| 2017-10-16 | 636-849-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | OFALLON | MO |
| 2017-09-29 | 636-888-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 6123 | ST CLAIR | MO |
| 2017-08-11 | 636-331-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | FSSCRSTLCY | MO |
| 2017-08-11 | 636-331-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FSSCRSTLCY | MO |
| 2017-08-07 | 636-638-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | FSSCRSTLCY | MO |
| 2017-08-07 | 636-706-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ST PETERS | MO |
| 2017-08-07 | 636-706-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ST PETERS | MO |
| 2017-08-07 | 636-706-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | ST PETERS | MO |
| 2017-07-11 | 636-865-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 6123 | HILLSBORO | MO |
| 2017-07-03 | 636-383-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | TROY | MO |
| 2017-06-26 | 636-566-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WINFIELD | MO |
| 2017-06-21 | 636-317-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | HARVESTER | MO |
| 2017-06-21 | 636-717-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | FENTON | MO |
| 2017-06-20 | 636-228-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | AUGUSTA | MO |
| 2017-06-20 | 636-303-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UNION | MO |
| 2017-06-20 | 636-303-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UNION | MO |
| 2017-06-20 | 636-695-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | DARDENNE | MO |
| 2017-06-19 | 636-778-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CHESTERFLD | MO |
| 2017-06-07 | 636-303-1XXX | 1000–1999 | Assigned | ONVOY, LLC - MO | 093F | UNION | MO |
| 2017-06-06 | 636-206-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | ST CHARLES | MO |
| 2017-06-06 | 636-215-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | MAXVILLE | MO |
| 2017-06-06 | 636-223-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | IMPERIAL | MO |
| 2017-06-06 | 636-312-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | OFALLON | MO |
| 2017-06-06 | 636-317-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | HARVESTER | MO |
| 2017-06-06 | 636-888-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | ST CLAIR | MO |
| 2017-06-01 | 636-747-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | PACIFIC | MO |
| 2017-05-31 | 636-431-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | VALLEYPARK | MO |
| 2017-05-31 | 636-496-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | FENTON | MO |
| 2017-05-30 | 636-445-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | WENTZVILLE | MO |
| 2017-05-17 | 636-777-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CHESTERFLD | MO |
| 2017-04-10 | 636-849-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | OFALLON | MO |
| 2017-04-10 | 636-893-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANCHESTER | MO |
| 2017-04-10 | 636-893-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANCHESTER | MO |
| 2017-04-10 | 636-893-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANCHESTER | MO |
| 2017-04-03 | 636-377-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WARRENTON | MO |
| 2017-04-03 | 636-377-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WARRENTON | MO |
| 2017-04-03 | 636-389-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | ST CHARLES | MO |
| 2017-04-03 | 636-389-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ST CHARLES | MO |
| 2017-04-03 | 636-409-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | OFALLON | MO |
| 2017-04-03 | 636-409-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | OFALLON | MO |
| 2017-04-03 | 636-409-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | OFALLON | 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.