When computing NDCG with the second formulation of DCG, the base of the log does not matter, but the base of the log does affect the value of NDCG for the first formulation. Clearly, the base of the log affects the value of DCG in both formulations.
407 and 321. Orlando, FL utilizes an area code overlay in which area codes 321 and 407 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary. In addition to Orlando, FL area code information read more about area codes 321 and 407 details and Florida area codes. Orlando, FL is located in Orange County and observes the Eastern Time Zone. View our Times by Area Code tool.
The states using the most area codes are California which is currently using 32 area codes, Texas 27 area codes, Florida 18 area codes, and New York 19 area codes. Although area codes are not assigned based upon population the locations with greater populations have an increased demand for area codes. The non-geographic area codes utilized in the United States are 456, 500, 533, 544, 566, 577, 700, 710, 800, 844, 855, 866, 877, 888 and 900. While many United States locations are assigned a single area code others are within geographic overlays.