A free app for Android, by AppWorld Infotech.

IP Tools Network Utilities app allows you to view your network’s internal or external IP address, SSID, BSSID, broadcast address, gateway, network mask, DNS Lookup, country, region, city, the provider’s geographical coordinates (latitude and longitude) and other basic information such as DHCP and DNS server information. You can also see tags, which are a set of keywords that can be used to search for information about your network or computer.

The application is very easy to use and includes a detailed and complete user guide. It also allows you to get feedback and suggestions on how to improve the app.