NumberResearchRecent thousands-block assignments
4 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 510
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 |
|---|---|---|---|---|---|---|---|
| 2016-02-03 | 510-945-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | FRNK GRNLF | CA |
| 2016-02-02 | 510-422-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | OKLD FRTVL | CA |
| 2016-02-02 | 510-422-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | OKLD FRTVL | CA |
| 2016-02-01 | 510-737-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | FRNK MAIN | CA |
| 2016-02-01 | 510-939-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | HRCUL-RODE | CA |
| 2016-01-29 | 510-319-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | FRNK OLIVR | CA |
| 2016-01-29 | 510-319-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | FRNK OLIVR | CA |
| 2016-01-29 | 510-345-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | OKLD BKLY | CA |
| 2016-01-29 | 510-345-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | OKLD BKLY | CA |
| 2016-01-29 | 510-361-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | HAYWARD | CA |
| 2016-01-29 | 510-390-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2016-01-29 | 510-390-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2016-01-29 | 510-756-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | OKLD TRNID | CA |
| 2016-01-27 | 510-756-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | OKLD TRNID | CA |
| 2016-01-27 | 510-756-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | OKLD TRNID | CA |
| 2016-01-19 | 510-319-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | FRNK OLIVR | CA |
| 2016-01-15 | 510-345-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | OKLD BKLY | CA |
| 2016-01-15 | 510-345-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | OKLD BKLY | CA |
| 2016-01-15 | 510-345-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | OKLD BKLY | CA |
| 2016-01-15 | 510-426-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | RICHMOND | CA |
| 2016-01-15 | 510-867-3XXX | 3000–3999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2016-01-15 | 510-879-5XXX | 5000–5999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2016-01-15 | 510-907-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2016-01-15 | 510-939-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | HRCUL-RODE | CA |
| 2016-01-12 | 510-756-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | OKLD TRNID | CA |
| 2015-12-31 | 510-368-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2015-12-31 | 510-390-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | OKLD MN-PD | CA |
| 2015-12-31 | 510-631-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | OKLD BKLY | CA |
| 2015-12-31 | 510-756-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | OKLD TRNID | CA |
| 2015-12-31 | 510-756-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | OKLD TRNID | CA |
| 2015-12-28 | 510-330-0XXX | 0000–0999 | Assigned | ONVOY, LLC - CA | 649C | HAYWARD | CA |
| 2015-12-28 | 510-330-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CA | 649C | HAYWARD | CA |
| 2015-12-28 | 510-330-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | HAYWARD | CA |
| 2015-12-22 | 510-694-2XXX | 2000–2999 | Assigned | ONVOY, LLC - CA | 649C | OKLD ALMD | CA |
| 2015-12-02 | 510-963-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HAYWARD | CA |
| 2015-12-01 | 510-319-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | FRNK OLIVR | CA |
| 2015-12-01 | 510-631-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OKLD BKLY | CA |
| 2015-12-01 | 510-631-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OKLD BKLY | CA |
| 2015-12-01 | 510-631-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OKLD BKLY | CA |
| 2015-12-01 | 510-631-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OKLD BKLY | CA |
| 2015-12-01 | 510-660-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RICHMOND | CA |
| 2015-12-01 | 510-660-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RICHMOND | CA |
| 2015-12-01 | 510-660-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RICHMOND | CA |
| 2015-12-01 | 510-942-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RICHMOND | CA |
| 2015-11-24 | 510-422-3XXX | 3000–3999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | OKLD FRTVL | CA |
| 2015-11-24 | 510-737-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | FRNK MAIN | CA |
| 2015-11-24 | 510-737-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | FRNK MAIN | CA |
| 2015-11-24 | 510-937-6XXX | 6000–6999 | Assigned | ONVOY, LLC - CA | 649C | CROCKETT | CA |
| 2015-11-24 | 510-937-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | CROCKETT | CA |
| 2015-11-24 | 510-945-4XXX | 4000–4999 | Assigned | ONVOY, LLC - CA | 649C | FRNK GRNLF | CA |
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.