NumberResearchThousands-blocks in 410-441
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 410-441 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 410 blocks
Most active assignees, all time — NPA 410
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 410-441-0XXX | 0000–0999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ELKTON | MD |
| — | 410-441-1XXX | 1000–1999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ELKTON | MD |
| 2003-02-03 | 410-441-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | ELKTON | MD |
| 2007-01-12 | 410-441-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | ELKTON | MD |
| — | 410-441-4XXX | 4000–4999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ELKTON | MD |
| 2010-08-05 | 410-441-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - MD | 071F | ELKTON | MD |
| 2010-09-01 | 410-441-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ELKTON | MD |
| 2003-10-22 | 410-441-7XXX | 7000–7999 | Assigned | QUANTUM TELECOMMUNICATIONS, INC. - MD | 2596 | ELKTON | MD |
| 2008-06-02 | 410-441-8XXX | 8000–8999 | Assigned | ARMSTRONG TELECOMMUNICATIONS, INC. - MD | 420C | ELKTON | MD |
| — | 410-441-9XXX | 9000–9999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | ELKTON | 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.