If you have a large number of domain names (100+), is it advisable to keep the domains with a single registrar or with multiple registrars. For a single registrar , you get better pricing, but if there is a problem , all websites will be affected.
Any feedback is appreciated.

I always use namecheap

I think they are very flexible with prices on larger purchases.

Rich

Probably moniker.com would be the only registrar I would put all my domains on.