The string you provided looks like a credential format typically found in or "combos" shared on hacking and account-cracking forums like xreactor.org.
: It is consistently rated as one of the fastest VPNs on the market due to its proprietary NordLynx protocol. NordVPN @xxDominicxx - xreactor.org.anom
: As a service, NordVPN is highly reputable and secure. However, any "account" found on a site like xreactor.org is compromised and should be avoided. The string you provided looks like a credential