Network Toolbox is your one stop shop for all the tools you need to troubleshoot your network on the go.


Whois:
✔ Lookup Whois information for any domain right from your android device.
✔ Quickly check if a domain is available for registration by performing a Whois lookup
✔ Choose from any of 254 known whois servers, or add and query your own.
✔ Formatted Whois results to improve readability

DNS:
✔ Forward and reverse DNS lookups.
✔ Supported DNS record types: A, AAAA, APL, CNAME, DNAME, MX, LOC, NS, PTR, RP, SOA, SPF, SRV, TXT

DNSBL / RBL Black List Check:
✔ Check any host or IP against over 60 DNSBL / RBL servers
✔ Get TXT statistics for IP or domain from senderbase.org

Network Block Info (ARIN):
✔ Get Network Block information for any host or IP.
✔ Choose which Regional Internet Registry(RIR) to query for Network Block Information

Ping:
✔ Ping any host or IP.
✔ Also works on non-rooted devices from Android 4.3

Port Scan:
✔ Scan a host or IP for Open ports
✔ Scan progresses from Port 1 to 65535, but can be cancelled at any time. App will display results up to last scanned port.

External IP Address:
✔ Find your external (Internet) IP address for the network you are currently connected to.

Geo Location:
✔ Find the country, city, area code, region, metro, postal code, latitude and longitude of any IP address
✔ View location coordinates on a map

CIDR Calculator:
✔ Determine start and end addresses, address count, broadcast and network addresses for a CIDR address in the format xx.xx.xx.xx/yy

Test Email Server:
✔ Test your email server's configuration. Check rDNS and banner matches, server security and response times.
✔ Click here to read more about the RBL check, Geo IP and Email Server Test features: http://goo.gl/2Yjh94

Daytime and Quote of the Day (QOTD):
✔ Supports getting date and time from any server supporting the Daytime protocol (RFC 867).
✔ Supports reading Quote of the Day from servers supporting the QOTD protocol (RFC 865).

Other Features:
✔ Extremely fast and light weight.
✔ Easily share results from all tools with other apps on your device.
✔ Allows text selection and copying of results
✔ Designed for Android 4.0 (ICS) but also works with older Android versions



Based on the open source JFreeWhois project: code.google.com/p/jfreewhois/
Based on the open source dnsjava project: www.dnsjava.org