NumberResearchThousands-blocks in 219-544
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 219-544 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 219 blocks
Most active assignees, all time — NPA 219
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-10-20 | 219-544-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LA CROSSE | IN |
| 2009-08-31 | 219-544-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LA CROSSE | IN |
| 2010-06-11 | 219-544-2XXX | 2000–2999 | Assigned | MCC TELEPHONY OF THE MID-WEST, LLC - IN | 874F | LA CROSSE | IN |
| 2012-02-03 | 219-544-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | LA CROSSE | IN |
| 2017-03-21 | 219-544-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IN | 7314 | LA CROSSE | IN |
| 2018-09-18 | 219-544-5XXX | 5000–5999 | Assigned | ONVOY, LLC - IN | 097D | LA CROSSE | IN |
| 2021-02-24 | 219-544-6XXX | 6000–6999 | Assigned | ONVOY, LLC - IN | 097D | LA CROSSE | IN |
| 2014-03-24 | 219-544-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LA CROSSE | IN |
| 2015-05-11 | 219-544-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LA CROSSE | IN |
| 2020-06-12 | 219-544-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | LA CROSSE | IN |
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.