NumberResearchRecent thousands-block assignments
20 blocks assigned in August 2026 · from the daily NANPA thousands-block report, 09/19/2026
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, August 2026 — NPA 413
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-31 | 413-607-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | WILLIAMSTN | MA |
| 2026-08-27 | 413-483-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ADAMS | MA |
| 2026-08-27 | 413-606-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | HOLYOKE | MA |
| 2026-08-25 | 413-299-7XXX | 7000–7999 | Assigned | AHOI LLC | 883K | HATFIELD | MA |
| 2026-08-25 | 413-392-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | NORTHFIELD | MA |
| 2026-08-25 | 413-453-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | SO DEERFLD | MA |
| 2026-08-25 | 413-476-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | SHEFFIELD | MA |
| 2026-08-20 | 413-450-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | AMHERST | MA |
| 2026-08-19 | 413-490-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | GREENFIELD | MA |
| 2026-08-17 | 413-516-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | WESTFIELD | MA |
| 2026-08-17 | 413-560-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | NORTHAMPTN | MA |
| 2026-08-17 | 413-601-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | PITTSFIELD | MA |
| 2026-08-17 | 413-602-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | SPRINGFLD | MA |
| 2026-08-17 | 413-605-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | CHICOPEE | MA |
| 2026-08-17 | 413-606-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | HOLYOKE | MA |
| 2026-08-17 | 413-880-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | SPRINGFLD | MA |
| 2026-08-17 | 413-880-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | SPRINGFLD | MA |
| 2026-08-12 | 413-605-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CHICOPEE | MA |
| 2026-08-12 | 413-880-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | SPRINGFLD | MA |
| 2026-08-06 | 413-937-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | LEE | MA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.