What kind of company is cni? About Us. CNI is an IT consulting and sales company. We have expert technicians, proven processes, and partnerships with major manufacturers. If you are looking for an IT company to help make technology easier for your business, we are the right company.How to contact c n i locate in washington state? Contact C-N-I Locates today for underground utility detection and inspection on residential or commercial properties in Washington State, including the complete Seattle, Tacoma, Everett metro area. Call or Text 253-826-1177 for assistance, questions, or to schedule an appointment. We guarantee two-hour site response time.Why choose cni locator? "CNI came out promptly and accurately found the broken underground wire. The locator worker was knowledgeable, polite, and professional. He showed me how the locator worked, which was helpful and nice of him. The price was okay for the trouble it saved us.