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 |
|---|---|---|---|---|---|---|---|
| 2016-01-08 | 636-735-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CHESTERFLD | MO |
| 2016-01-08 | 636-735-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CHESTERFLD | MO |
| 2016-01-08 | 636-747-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | PACIFIC | MO |
| 2015-12-31 | 636-900-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MO | 093F | WASHINGTON | MO |
| 2015-12-30 | 636-431-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | VALLEYPARK | MO |
| 2015-12-30 | 636-492-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | FENTON | MO |
| 2015-12-17 | 636-389-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MO | 093F | ST CHARLES | MO |
| 2015-12-08 | 636-312-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | OFALLON | MO |
| 2015-12-08 | 636-312-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | OFALLON | MO |
| 2015-12-03 | 636-900-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WASHINGTON | MO |
| 2015-11-30 | 636-389-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | ST CHARLES | MO |
| 2015-11-18 | 636-422-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | POND | MO |
| 2015-11-10 | 636-856-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WENTZVILLE | MO |
| 2015-11-06 | 636-312-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | OFALLON | MO |
| 2015-11-02 | 636-389-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF MISSOURI, LLC - MO | 225F | ST CHARLES | MO |
| 2015-11-02 | 636-515-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | OFALLON | MO |
| 2015-10-26 | 636-778-4XXX | 4000–4999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CHESTERFLD | MO |
| 2015-10-23 | 636-535-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FSSCRSTLCY | MO |
| 2015-10-23 | 636-725-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FSSCRSTLCY | MO |
| 2015-10-23 | 636-725-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FSSCRSTLCY | MO |
| 2015-10-23 | 636-735-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CHESTERFLD | MO |
| 2015-10-21 | 636-445-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | WENTZVILLE | MO |
| 2015-10-16 | 636-900-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | WASHINGTON | MO |
| 2015-10-16 | 636-900-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | WASHINGTON | MO |
| 2015-10-15 | 636-800-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MO | 093F | ST CHARLES | MO |
| 2015-10-15 | 636-800-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MO | 093F | ST CHARLES | MO |
| 2015-10-02 | 636-249-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UNION | MO |
| 2015-10-02 | 636-275-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MAXVILLE | MO |
| 2015-10-02 | 636-275-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MAXVILLE | MO |
| 2015-09-28 | 636-428-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HIGH RIDGE | MO |
| 2015-09-28 | 636-428-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HIGH RIDGE | MO |
| 2015-09-28 | 636-428-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HIGH RIDGE | MO |
| 2015-09-28 | 636-428-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | HIGH RIDGE | MO |
| 2015-08-25 | 636-271-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | PACIFIC | MO |
| 2015-08-24 | 636-674-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | ANTONIA | MO |
| 2015-08-24 | 636-735-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MO | 993E | CHESTERFLD | MO |
| 2015-08-20 | 636-999-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MO | 093F | PACIFIC | MO |
| 2015-08-20 | 636-999-3XXX | 3000–3999 | Assigned | ONVOY, LLC - MO | 093F | PACIFIC | MO |
| 2015-08-20 | 636-999-4XXX | 4000–4999 | Assigned | ONVOY, LLC - MO | 093F | PACIFIC | MO |
| 2015-08-20 | 636-999-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MO | 093F | PACIFIC | MO |
| 2015-08-20 | 636-999-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MO | 093F | PACIFIC | MO |
| 2015-08-10 | 636-628-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANCHESTER | MO |
| 2015-08-10 | 636-628-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANCHESTER | MO |
| 2015-08-10 | 636-628-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANCHESTER | MO |
| 2015-07-28 | 636-237-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MO | 4932 | CHESTERFLD | MO |
| 2015-07-28 | 636-328-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST CHARLES | MO |
| 2015-07-28 | 636-395-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST CHARLES | MO |
| 2015-07-28 | 636-410-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ST CHARLES | MO |
| 2015-07-28 | 636-493-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ST CHARLES | MO |
| 2015-07-22 | 636-515-1XXX | 1000–1999 | 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.