NumberResearchThousands-blocks in 301-684
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 301-684 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 301 blocks
Most active assignees, all time — NPA 301
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 |
|---|---|---|---|---|---|---|---|
| 2006-11-06 | 301-684-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | INDIANHEAD | MD |
| 2009-09-15 | 301-684-1XXX | 1000–1999 | Assigned | YMAX COMMUNICATIONS CORP. - MD | 281E | INDIANHEAD | MD |
| 2007-09-10 | 301-684-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | INDIANHEAD | MD |
| 2009-09-15 | 301-684-3XXX | 3000–3999 | Assigned | YMAX COMMUNICATIONS CORP. - MD | 281E | INDIANHEAD | MD |
| 2010-07-20 | 301-684-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | INDIANHEAD | MD |
| 2011-02-18 | 301-684-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MD | 6119 | INDIANHEAD | MD |
| 2012-08-15 | 301-684-6XXX | 6000–6999 | Assigned | ONVOY, LLC - MD | 876D | INDIANHEAD | MD |
| 2009-09-15 | 301-684-7XXX | 7000–7999 | Assigned | YMAX COMMUNICATIONS CORP. - MD | 281E | INDIANHEAD | MD |
| 2010-07-15 | 301-684-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | INDIANHEAD | MD |
| — | 301-684-9XXX | 9000–9999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - DC | 7529 | INDIANHEAD | MD |
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.