+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
I don’t think there’s a direct RCMP option anymore. Most fingerprinting companies process the request and send it to the RCMP, which then forwards the results to IRCC.

It’s best to choose a reliable service close to you and make sure you get proof of submission with the DCN number, in case a follow-up is needed.