NumberResearchThousands-blocks in 508-938
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 508-938 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
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2025-12-11 | 508-938-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | WESTPORT | MA |
| 2006-01-03 | 508-938-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | WESTPORT | MA |
| 2016-03-15 | 508-938-2XXX | 2000–2999 | Assigned | ONVOY, LLC - MA | 892D | WESTPORT | MA |
| 2021-03-16 | 508-938-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WESTPORT | MA |
| 2025-03-11 | 508-938-4XXX | 4000–4999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WESTPORT | MA |
| 2002-05-28 | 508-938-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | WESTPORT | MA |
| 2004-03-11 | 508-938-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | WESTPORT | MA |
| 2005-05-25 | 508-938-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | WESTPORT | MA |
| 2021-12-09 | 508-938-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WESTPORT | MA |
| 2011-02-11 | 508-938-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | WESTPORT | 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.