NumberResearchThousands-blocks in 574-244
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 574-244 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 574 blocks
Most active assignees, all time — NPA 574
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 574-244-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | NO WEBSTER | IN |
| 2004-02-26 | 574-244-1XXX | 1000–1999 | Assigned | FBN INDIANA, INC. - IN | 4117 | NO WEBSTER | IN |
| 2010-05-17 | 574-244-2XXX | 2000–2999 | Assigned | MCC TELEPHONY OF THE MID-WEST, LLC - IN | 874F | NO WEBSTER | IN |
| 2021-06-14 | 574-244-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - IN | 105F | NO WEBSTER | IN |
| — | 574-244-4XXX | 4000–4999 | Available | NO WEBSTER | IN | ||
| — | 574-244-5XXX | 5000–5999 | Available | NO WEBSTER | IN | ||
| 2017-09-07 | 574-244-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IN | 7314 | NO WEBSTER | IN |
| 2014-03-21 | 574-244-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NO WEBSTER | IN |
| 2020-06-16 | 574-244-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | NO WEBSTER | IN |
| — | 574-244-9XXX | 9000–9999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | NO WEBSTER | IN |
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.