public static String extractApproximateZone(String host) {
		String[] split = StringUtils.split(host, ".");
		return split == null ? host : split[1];
	}
Approximates Eureka zones from a host name. This method approximates the zone to be
everything after the first "." in the host name.
@param host The host name to extract the host name from
@return The approximate zone
spring-cloud-netflix-eureka-client/src/main/java/org/springframework/cloud/netflix/eureka/support/ZoneUtils.java