NumberResearchThousands-blocks in 253-214
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 253-214 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 253 blocks
Most active assignees, all time — NPA 253
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 253-214-0XXX | 0000–0999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA | 7274 | DES MOINES | WA |
| — | 253-214-1XXX | 1000–1999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA | 7274 | DES MOINES | WA |
| 2004-01-13 | 253-214-2XXX | 2000–2999 | Assigned | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7173 | DES MOINES | WA |
| 2005-10-19 | 253-214-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | DES MOINES | WA |
| 2008-05-21 | 253-214-4XXX | 4000–4999 | Assigned | ONVOY, LLC - WA | 483E | DES MOINES | WA |
| 2008-05-21 | 253-214-5XXX | 5000–5999 | Assigned | ONVOY, LLC - WA | 483E | DES MOINES | WA |
| 2010-12-13 | 253-214-6XXX | 6000–6999 | Assigned | ONVOY, LLC - WA | 483E | DES MOINES | WA |
| 2010-02-02 | 253-214-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | DES MOINES | WA |
| 2009-06-03 | 253-214-8XXX | 8000–8999 | Assigned | ONVOY, LLC - WA | 483E | DES MOINES | WA |
| 2010-06-11 | 253-214-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WA | 006F | DES MOINES | WA |
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.