Area code 913 is the telephone area code in the North American Numbering Plan for northeastern Kansas. The numbering plan area consists of a small …查看更多内容
The NANP Administration System (NAS) provides an automated system for processing number resource applications, collecting resource utilization and forecast data and issuing notifications …
The NANP Administration System (NAS) provides an automated system for processing number resource applications, collecting resource utilization and forecast data and issuing notifications to the industry on numbering...