There are different levels of membership and certification that individuals may earn in the SIOTO organization. While membership shows alliance with SIOTO the level of certification earned is based on certain types of equipment.  Operators who do not own this equipment are not required to obtain the higher level of certification as listed. 

The differences between membership, basic certification and advanced certification can be found on their own pages.

Membership

Basic Certification

Advanced Certification

If you would like to verify the participation of an operator that you know or wish to use,

Click here to view our members listed alphabetically by Company.

If you are looking for a SIOTO operator in your area,

Click here to view our members listed by State.