NumberResearchRecent thousands-block assignments
2 blocks assigned in the last 30 days · 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, last 30 days — NPA 857
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 |
|---|---|---|---|---|---|---|---|
| 2026-09-02 | 857-355-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | EVERETT | MA |
| 2026-08-25 | 857-833-3XXX | 3000–3999 | Assigned | AHOI LLC | 883K | WINTHROP | MA |
| 2026-08-20 | 857-412-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | CAMBRIDGE | MA |
| 2026-08-20 | 857-418-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | DORCHESTER | MA |
| 2026-08-20 | 857-431-3XXX | 3000–3999 | Assigned | INTRADO COMMUNICATIONS, LLC | 116E | BOSTON | MA |
| 2026-08-20 | 857-431-5XXX | 5000–5999 | Assigned | INTRADO COMMUNICATIONS, LLC | 116E | BOSTON | MA |
| 2026-08-20 | 857-431-6XXX | 6000–6999 | Assigned | INTRADO COMMUNICATIONS, LLC | 116E | BOSTON | MA |
| 2026-08-17 | 857-363-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | EVERETT | MA |
| 2026-08-17 | 857-431-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | BOSTON | MA |
| 2026-08-17 | 857-431-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | BOSTON | MA |
| 2026-08-10 | 857-822-2XXX | 2000–2999 | Assigned | EXIANT COMMUNICATIONS LLC | 114J | SOMERVILLE | MA |
| 2026-07-09 | 857-579-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | BOSTON | MA |
| 2026-06-30 | 857-881-1XXX | 1000–1999 | Assigned | 8X8, INC. | 193E | BOSTON | MA |
| 2026-06-17 | 857-403-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | QUINCY | MA |
| 2026-06-17 | 857-755-7XXX | 7000–7999 | Assigned | HD CARRIER LLC | 321J | QUINCY | MA |
| 2026-06-12 | 857-399-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ROXBURY | MA |
| 2026-05-27 | 857-822-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SOMERVILLE | MA |
| 2026-05-07 | 857-288-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | BOSTON | MA |
| 2026-04-09 | 857-431-4XXX | 4000–4999 | Assigned | HD CARRIER LLC | 321J | BOSTON | MA |
| 2026-04-06 | 857-600-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CAMBRIDGE | MA |
| 2026-03-20 | 857-428-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | EVERETT | MA |
| 2026-03-20 | 857-428-5XXX | 5000–5999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | EVERETT | MA |
| 2025-12-26 | 857-429-7XXX | 7000–7999 | Assigned | TELNYX LLC | 073H | ROXBURY | MA |
| 2025-12-16 | 857-431-1XXX | 1000–1999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | BOSTON | MA |
| 2025-12-16 | 857-431-2XXX | 2000–2999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | BOSTON | MA |
| 2025-12-05 | 857-426-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2025-12-05 | 857-426-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2025-12-05 | 857-426-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2025-10-15 | 857-426-1XXX | 1000–1999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2025-10-15 | 857-426-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2025-10-15 | 857-426-4XXX | 4000–4999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2025-10-15 | 857-426-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2025-10-01 | 857-605-5XXX | 5000–5999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BRIGHTON | MA |
| 2025-10-01 | 857-605-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BRIGHTON | MA |
| 2025-09-23 | 857-424-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | ROXBURY | MA |
| 2025-09-10 | 857-421-6XXX | 6000–6999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2025-09-10 | 857-426-0XXX | 0000–0999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROOKLINE | MA |
| 2025-08-05 | 857-600-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CAMBRIDGE | MA |
| 2025-07-10 | 857-431-0XXX | 0000–0999 | Assigned | WAVENATION, LLC | 700J | BOSTON | MA |
| 2025-03-04 | 857-857-0XXX | 0000–0999 | Assigned | MASS MOBILE LLC | 125L | NEWTON | MA |
| 2025-03-04 | 857-857-1XXX | 1000–1999 | Assigned | MASS MOBILE LLC | 125L | NEWTON | MA |
| 2025-03-04 | 857-857-2XXX | 2000–2999 | Assigned | MASS MOBILE LLC | 125L | NEWTON | MA |
| 2025-03-04 | 857-857-3XXX | 3000–3999 | Assigned | MASS MOBILE LLC | 125L | NEWTON | MA |
| 2025-03-04 | 857-857-4XXX | 4000–4999 | Assigned | MASS MOBILE LLC | 125L | NEWTON | MA |
| 2025-03-04 | 857-857-5XXX | 5000–5999 | Assigned | MASS MOBILE LLC | 125L | NEWTON | MA |
| 2025-03-04 | 857-857-6XXX | 6000–6999 | Assigned | MASS MOBILE LLC | 125L | NEWTON | MA |
| 2025-01-14 | 857-526-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | QUINCY | MA |
| 2025-01-07 | 857-244-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | MA |
| 2025-01-07 | 857-579-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | MA |
| 2025-01-07 | 857-579-4XXX | 4000–4999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | 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.