OLI’s DNS (domain name servers)
ns.olicentral.com
ns2.olicentral.com
ns3.olicentral.com
ns4.olicentral.com
DNS changes usually take around 24 hours to activate, depending on how often each provider updates their DNS records. Often it’s faster.
For questions on how to change DNS, you would need to ask your registrar who controls your DNS, or whoever registered your domain.