WhiteListing URL in host alias

[#1]

I am in a situation where i need to whitelist many customer vanity URLs in my host alias .

I have to whiteboard vanity urls in the apigee hostalias .

Does host Aliases in given configuration takes regular expression or exact FQDN only ?

{ "hostAliases": [ "keng01-dev01-api88-gtw88.dev.mykronos.internal" ],

"interfaces": [],

"name": "default",

"port": "9001" }