NumberResearchRecent thousands-block assignments
3,379 blocks assigned in May 2026 · from the daily NANPA thousands-block report, 09/18/2026
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, May 2026
New assignments by month
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| Assigned | Block | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2026-05-20 | 227-257-5XXX | ONVOY, LLC - MD | 876D | WSNG236Z14 | MD |
| 2026-05-20 | 227-276-6XXX | ONVOY, LLC - MD | 876D | WSHNGTNZN3 | MD |
| 2026-05-20 | 227-296-9XXX | ONVOY, LLC - MD | 876D | WSNGTNZN12 | MD |
| 2026-05-20 | 227-298-8XXX | ONVOY, LLC - MD | 876D | WSNGTNZN10 | MD |
| 2026-05-20 | 227-300-1XXX | ONVOY, LLC - MD | 876D | ASHTON236 | MD |
| 2026-05-20 | 227-301-0XXX | ONVOY, LLC - MD | 876D | WSHNGTNZN2 | MD |
| 2026-05-20 | 227-666-9XXX | ONVOY, LLC - MD | 876D | FREDERICK | MD |
| 2026-05-20 | 228-287-8XXX | ONVOY, LLC - MS | 719E | BILOXI | MS |
| 2026-05-20 | 229-783-8XXX | ONVOY, LLC - GA | 067D | VALDOSTA | GA |
| 2026-05-20 | 229-966-1XXX | ONVOY, LLC - GA | 067D | HAHIRA | GA |
| 2026-05-20 | 240-525-5XXX | ONVOY, LLC - MD | 876D | WSNG236Z15 | MD |
| 2026-05-20 | 254-489-8XXX | ONVOY, LLC - TX | 903C | WACO | TX |
| 2026-05-20 | 254-513-8XXX | ONVOY, LLC - TX | 903C | GLEN ROSE | TX |
| 2026-05-20 | 254-561-6XXX | ONVOY, LLC - TX | 903C | BELTON | TX |
| 2026-05-20 | 254-594-9XXX | ONVOY, LLC - TX | 903C | TEMPLE | TX |
| 2026-05-20 | 260-339-4XXX | ONVOY, LLC - IN | 097D | DECATUR | IN |
| 2026-05-20 | 279-285-2XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SCRM MAIN | CA |
| 2026-05-20 | 279-285-3XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SCRM MAIN | CA |
| 2026-05-20 | 279-285-4XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SCRM MAIN | CA |
| 2026-05-20 | 279-285-9XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SCRM MAIN | CA |
| 2026-05-20 | 279-286-6XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RSVL MAIN | CA |
| 2026-05-20 | 279-286-7XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RSVL MAIN | CA |
| 2026-05-20 | 279-286-9XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RSVL MAIN | CA |
| 2026-05-20 | 279-438-0XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SCRM MAIN | CA |
| 2026-05-20 | 279-842-4XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FOLSOM | CA |
| 2026-05-20 | 279-880-1XXX | 8X8, INC. | 193E | SCRM MAIN | CA |
| 2026-05-20 | 301-686-6XXX | ONVOY, LLC - MD | 876D | WSHNGTNZN6 | MD |
| 2026-05-20 | 316-435-0XXX | ONVOY, LLC - KS | 205F | EL DORADO | KS |
| 2026-05-20 | 346-928-6XXX | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CYPRESS | TX |
| 2026-05-20 | 346-928-7XXX | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CYPRESS | TX |
| 2026-05-20 | 350-241-4XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | STOCKTON | CA |
| 2026-05-20 | 350-242-0XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | STOCKTON | CA |
| 2026-05-20 | 350-242-7XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | STOCKTON | CA |
| 2026-05-20 | 350-242-8XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | STOCKTON | CA |
| 2026-05-20 | 350-880-1XXX | 8X8, INC. | 193E | MANTECA | CA |
| 2026-05-20 | 361-554-7XXX | TERRA NOVA TELECOM INC. | 145J | GANADO | TX |
| 2026-05-20 | 380-290-6XXX | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | REYNOLDSBG | OH |
| 2026-05-20 | 380-290-7XXX | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | REYNOLDSBG | OH |
| 2026-05-20 | 406-489-7XXX | BANDWIDTH.COM CLEC, LLC - MT | 994E | SIDNEY | MT |
| 2026-05-20 | 417-717-2XXX | ONVOY, LLC - MO | 093F | WEBB CITY | MO |
| 2026-05-20 | 430-369-8XXX | ONVOY, LLC - TX | 903C | GREENVILLE | TX |
| 2026-05-20 | 445-328-3XXX | BOOST SUBSCRIBERCO L.L.C. | 490J | PHLDLPHZN1 | PA |
| 2026-05-20 | 470-804-1XXX | ONVOY, LLC - GA | 067D | BOGARTSTHM | GA |
| 2026-05-20 | 475-678-1XXX | ONVOY, LLC - CT | 639C | DANBURY | CT |
| 2026-05-20 | 478-425-3XXX | ONVOY, LLC - GA | 067D | MACON | GA |
| 2026-05-20 | 479-453-5XXX | T-MOBILE USA, INC. | 6529 | DARDANELLE | AR |
| 2026-05-20 | 510-629-8XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | OKLD ALMD | CA |
| 2026-05-20 | 540-813-6XXX | ONVOY, LLC - VA | 138E | DUBLIN | VA |
| 2026-05-20 | 551-416-9XXX | ONVOY, LLC - NJ | 637C | CRAGMERE | NJ |
| 2026-05-20 | 557-444-6XXX | ONVOY, LLC - MO | 093F | CREVECOEUR | MO |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.