NumberResearchThousands-blocks in 508-266
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 508-266 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 508 blocks
Most active assignees, all time — NPA 508
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2004-05-19 | 508-266-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WHITINSVL | MA |
| 2010-07-21 | 508-266-1XXX | 1000–1999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | WHITINSVL | MA |
| — | 508-266-2XXX | 2000–2999 | Reserved | VERIZON NEW ENGLAND INC. | 9102 | WHITINSVL | MA |
| 2023-07-07 | 508-266-3XXX | 3000–3999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WHITINSVL | MA |
| 2023-06-14 | 508-266-4XXX | 4000–4999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | WHITINSVL | MA |
| 2011-05-31 | 508-266-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | WHITINSVL | MA |
| 2004-08-30 | 508-266-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | WHITINSVL | MA |
| 2013-08-16 | 508-266-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WHITINSVL | MA |
| 2013-04-08 | 508-266-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | WHITINSVL | MA |
| 2013-04-08 | 508-266-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | WHITINSVL | 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.