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 |
|---|---|---|---|---|---|
| 2026-05-18 | 509-437-6XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | SPOKANE | WA |
| 2026-05-18 | 509-777-7XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | SPOKANE | WA |
| 2026-05-18 | 509-799-1XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | SPOKANE | WA |
| 2026-05-18 | 509-867-1XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA | 5812 | SPOKANE | WA |
| 2026-05-18 | 515-435-3XXX | METROPCS, INC. | 5562 | ROLAND | IA |
| 2026-05-18 | 515-464-5XXX | METROPCS, INC. | 5562 | MCCALLSBG | IA |
| 2026-05-18 | 515-667-5XXX | METROPCS, INC. | 5562 | GOWRIE | IA |
| 2026-05-18 | 516-560-1XXX | BOOST SUBSCRIBERCO L.L.C. | 490J | NASSAUZN05 | NY |
| 2026-05-18 | 563-330-3XXX | METROPCS, INC. | 5562 | MONONA | IA |
| 2026-05-18 | 620-334-5XXX | METROPCS, INC. | 5562 | GALVA | KS |
| 2026-05-18 | 620-334-9XXX | T-MOBILE USA, INC. | 6529 | GALVA | KS |
| 2026-05-18 | 629-341-1XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | MURFREESBO | TN |
| 2026-05-18 | 629-341-8XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | MURFREESBO | TN |
| 2026-05-18 | 629-341-9XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | MURFREESBO | TN |
| 2026-05-18 | 641-266-2XXX | T-MOBILE USA, INC. | 6529 | ACKLEY | IA |
| 2026-05-18 | 656-284-9XXX | BANDWIDTH.COM CLEC, LLC - FL | 982E | TAMPACEN | FL |
| 2026-05-18 | 657-862-0XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2026-05-18 | 657-862-1XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2026-05-18 | 657-862-2XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2026-05-18 | 657-862-3XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2026-05-18 | 657-862-4XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2026-05-18 | 657-862-5XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2026-05-18 | 657-862-6XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2026-05-18 | 657-862-7XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2026-05-18 | 657-862-8XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2026-05-18 | 657-862-9XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANAHEIM | CA |
| 2026-05-18 | 657-863-0XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2026-05-18 | 657-863-1XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2026-05-18 | 657-863-2XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2026-05-18 | 657-863-3XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2026-05-18 | 657-863-4XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2026-05-18 | 657-863-5XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2026-05-18 | 657-863-6XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2026-05-18 | 657-863-7XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2026-05-18 | 657-863-8XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2026-05-18 | 657-863-9XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | HUNTITNBCH | CA |
| 2026-05-18 | 657-864-0XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2026-05-18 | 657-864-1XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2026-05-18 | 657-864-2XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2026-05-18 | 657-864-3XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2026-05-18 | 657-864-4XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2026-05-18 | 657-864-5XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2026-05-18 | 657-864-6XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2026-05-18 | 657-864-7XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2026-05-18 | 657-864-8XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2026-05-18 | 657-864-9XXX | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SANTA ANA | CA |
| 2026-05-18 | 689-373-4XXX | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | ORLANDO | FL |
| 2026-05-18 | 689-373-5XXX | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | ORLANDO | FL |
| 2026-05-18 | 689-373-6XXX | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | ORLANDO | FL |
| 2026-05-18 | 689-381-0XXX | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | WINTERPARK | FL |
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.