Carrier profile · USDOT 1094172 · Updated Jun 13, 2026

Voltmaster Corp

3 power unitsCORYDON, IA50/100
AUTHORITY STATUS UNKNOWNRATED SATISFACTORY
Verified linksgrm.netFMCSA SAFER

Identity & Federal

The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.

Location

Physical address
607 WEST JEFFERSON, CORYDON, IA, 50060
Mailing address
PO BOX 288, CORYDON, IA, 50060-0288
Operation
Interstate

Contact

Phone
(641) 872-2044
Fax
(641) 872-2664
Email
voltmstr@grm.net
Web domain
grm.net

Registration

Officer
Roger Winslow
USDOT / docket
1094172
First registered
Feb 5, 2003
Last MCS-150
Feb 5, 2007 · 122,000 mi (2004)
FMCSA safety rating
Satisfactory · Feb 10, 2003
D-U-N-S
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Fleet (self-reported · MCS-150)

3Power units
3Drivers
3CDL drivers
122,000Annual mileage

MCS-150 filing history· biennial-update cadence

Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.

Federal record activity· monitored daily by Vektor

No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.