PTCNET network provider: all IP addresses, address range, subnets. Ptcnet Melbourne Australia, determine the actual location by IP address (address of the provider PTCNET) (site chinatelecom.com.cn), location of AS (ISP hoster).
Service for getting the site location or IP address: isp provider, organization, country, region, city, range (network) of IP addresses. Additional tools (Ping check, HTTP check) allow you to test availability of IP address (site) from various points around the world in real time.