Iowa Admin. Code r. 199-34.3
A person meeting the definition of "engaged primarily in providing the same competitive nonutility services in the area" in rule 199-34.2 (476) may use, to the same extent utilized by the public utility for its nonutility service in connection with nonutility services, the customer lists, billing and collection system, and mailing system of the public utility company engaged in a systematic marketing effort, other than on an incidental or casual basis. The person shall be charged for the cost or expense incurred by the public utility in providing access to its systems and its lists, and the cost or expense will not be greater than the charge, fee, or cost imposed upon or allocated to the provision of nonutility service by the utility for the similar use of the systems.
Iowa Admin. Code r. 199-34.3