Basic functionality in place, need improved errors and logged in redirect

server/utils/domains.js

@@ -0,0 +1,33 @@
+// @flow
+import parseDomain from 'parse-domain';
+
+export function stripSubdomain(hostname) {
+  const parsed = parseDomain(hostname);
+  if (parsed.tld) return `${parsed.domain}.${parsed.tld}`;
+  return parsed.domain;
+}
+
+export const RESERVED_SUBDOMAINS = [
+  'admin',
+  'api',
+  'beta',
+  'blog',
+  'cdn',
+  'community',
+  'developer',
+  'forum',
+  'help',
+  'imap',
+  'localhost',
+  'mail',
+  'ns1',
+  'ns2',
+  'ns3',
+  'ns4',
+  'smtp',
+  'support',
+  'status',
+  'static',
+  'test',
+  'www',
+];