The Nameserver ns4.onefiserv.com have a IP Address of 50.58.9.13 which is hosted on United States.
Fiserv is a provider of technology solutions to the financial world, including banks, credit unions, securities processing organizations, insurance companies, finance companies...
With BillMatrix Payments from Fiserv, your customers can make one-time Web, mobile, IVR and agent-assisted payments - while keeping biller costs under control.