NumberResearchRecent thousands-block assignments
0 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, all time — NPA 508
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-01-09 | 508-204-6XXX | 6000–6999 | Assigned | TC SYSTEMS, INC. | 7135 | NEWBEDFORD | MA |
| 2012-10-18 | 508-321-8XXX | 8000–8999 | Assigned | TC SYSTEMS, INC. | 7135 | MEDWAY | MA |
| 2012-10-18 | 508-401-3XXX | 3000–3999 | Assigned | TC SYSTEMS, INC. | 7135 | WAYLAND | MA |
| 2012-10-18 | 508-469-7XXX | 7000–7999 | Assigned | TC SYSTEMS, INC. | 7135 | CHATHAM | MA |
| 2012-10-18 | 508-506-6XXX | 6000–6999 | Assigned | TC SYSTEMS, INC. | 7135 | OXFORD | MA |
| 2012-10-18 | 508-576-4XXX | 4000–4999 | Assigned | TC SYSTEMS, INC. | 7135 | NO ATTLEBO | MA |
| 2012-10-18 | 508-682-6XXX | 6000–6999 | Assigned | TC SYSTEMS, INC. | 7135 | EASTON | MA |
| 2007-03-08 | 508-382-4XXX | 4000–4999 | Assigned | TC SYSTEMS, INC. | 7135 | MARLBORO | MA |
| 2004-06-10 | 508-449-2XXX | 2000–2999 | Assigned | TC SYSTEMS, INC. | 7135 | MARLBORO | MA |
| 2004-06-10 | 508-683-4XXX | 4000–4999 | Assigned | TC SYSTEMS, INC. | 7135 | MARLBORO | MA |
| 2004-06-10 | 508-683-5XXX | 5000–5999 | Assigned | TC SYSTEMS, INC. | 7135 | MARLBORO | MA |
| 2004-06-10 | 508-683-6XXX | 6000–6999 | Assigned | TC SYSTEMS, INC. | 7135 | MARLBORO | MA |
| 2003-10-31 | 508-468-2XXX | 2000–2999 | Assigned | TC SYSTEMS, INC. | 7135 | BROCKTON | MA |
| 2003-10-31 | 508-468-3XXX | 3000–3999 | Assigned | TC SYSTEMS, INC. | 7135 | BROCKTON | MA |
| 2003-03-14 | 508-207-4XXX | 4000–4999 | Assigned | TC SYSTEMS, INC. | 7135 | NEWBEDFORD | MA |
| 2003-03-07 | 508-436-1XXX | 1000–1999 | Assigned | TC SYSTEMS, INC. | 7135 | BROCKTON | MA |
| 2003-03-07 | 508-436-5XXX | 5000–5999 | Assigned | TC SYSTEMS, INC. | 7135 | BROCKTON | MA |
| 2003-03-07 | 508-436-8XXX | 8000–8999 | Assigned | TC SYSTEMS, INC. | 7135 | BROCKTON | MA |
| 2002-09-18 | 508-809-2XXX | 2000–2999 | Assigned | TC SYSTEMS, INC. | 7135 | NO ATTLEBO | MA |
| 2002-04-29 | 508-934-5XXX | 5000–5999 | Assigned | TC SYSTEMS, INC. | 7135 | DOVER | MA |
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.