ikobo.com's NS

I noticed that ikobo.com only lists a single nameserver, NS1.IKOBO.COM (which resolves to a single IP: 64.94.14.29). Isn't this considered a bad practice? And also, AFAIK, most registrars force you to enter at least two? Do they have some kind of network redundancy below the IP level?

 

 

 

 

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