NumberResearchThousands-blocks in 605-741
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 605-741 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 605 blocks
Most active assignees, all time — NPA 605
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 605-741-0XXX | 0000–0999 | Reserved | PAETEC ITEL, LLC | 829J | VERMILLION | SD |
| 2018-07-06 | 605-741-1XXX | 1000–1999 | Assigned | AIRUS, INC. - SD | 580H | VERMILLION | SD |
| 2017-05-09 | 605-741-2XXX | 2000–2999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | VERMILLION | SD |
| 2024-11-21 | 605-741-3XXX | 3000–3999 | Assigned | ONVOY SPECTRUM, LLC | 624H | VERMILLION | SD |
| 2020-07-23 | 605-741-4XXX | 4000–4999 | Assigned | ONVOY, LLC - SD | 162G | VERMILLION | SD |
| — | 605-741-5XXX | 5000–5999 | Reserved | PAETEC ITEL, LLC | 829J | VERMILLION | SD |
| 2018-03-07 | 605-741-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA SD-LLC | 693G | VERMILLION | SD |
| 2020-07-23 | 605-741-7XXX | 7000–7999 | Assigned | ONVOY, LLC - SD | 162G | VERMILLION | SD |
| 2018-09-13 | 605-741-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | VERMILLION | SD |
| — | 605-741-9XXX | 9000–9999 | Reserved | PAETEC ITEL, LLC | 829J | VERMILLION | SD |
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.