SubnetPing uses an approximation technique to guess the hop count based on some assumptions. There is no 100% accurate way to get this information. The IMCP echo reply has to be received within a give time-frame (timeout), or the Ping attempted will be considered as a timeout and the IMCP echo reply will be dropped.ĭetermine Hops (number of routers in the path) The Ping time is the locally measured time from sending the IMCP echo request to the target until the IMCP echo reply received. The Ping time is determined by sending an IMCP echo request to the target IPv4 and waiting for the IMCP echo reply. It should be possible detect available hosts in remote subnets, behind routers, remote networks thru an VPN, or even public networks as long as the hosts respond to IMCP echo requests and the TTL is high enough so that the packet will no be dropped by any router in the path. SubnetPing uses the default network interface the operating system and local routing table offers for this task. Scan an entire IPv4/24 (Class C) subnet by sending IMCP echo requests to all possible hosts in the selected subnet. And even if you douse it, location data is stored on the device, it is not sent oruploaded anywhere (the exception being if you attach the GoogleEarth file to an outgoing email - in which case you're in charge ofwhere the email is sent to). Most people will neverneed this option, so you don't have to worry. Once a long-running ping with location is done,a Google Earth file (.dmz) is created that shows the ping timesalong with the geo location of each ping. Thischeckbox is turned off by default, so unless you explicitly set it,you don't need to worry about your location ever being tracked.Tracking location is useful for measuring ping times duringlong-running pings across large areas, like a factory or auniversity campus.
A history of theresults of recent operations is kept (swipe left and right toswitch between tabs).Numerous options (like using an alternative name server, Ping TTL,showing ping times for each traceroute step, Broadcast Ping, usingHTTPS, setting the HTTP port number, selection of DNS record typesto query, etc.) are available through a long-click on the "Go"button.Contains no ads.Please join the Google community "Ping & DNS" where I supportthis app, especially if you're having problems.WHY THE GPS PERMISSION? First off, GPS is only accessed if the"Show Location" checkbox is set in the Ping Options dialog. Optional "NetSentry" monitors networkinterfaces and warns of breaching usage limits.Includes a home screen widget for long-running pings.Recently used hosts, IP addresses and DNS servers are rememberedfor auto-completion.The results can be copied (via long-click on the output text), sentvia email or stored in a file as text or PDF.
"Wake on LAN" functionalityfor waking up machines. It alsoshows details of the current network setup and connection of thedevice, including netstat information. (For an explanation of the GPS permission, seebelow.)Displays network information and diagnostics: Ping a server (viaICMP over IPv4 or IPv6 and TCP), DNS lookup (with geographicallookup of IP addresses), reverse DNS lookup, WHOIS queries,inspecting HTTP response headers, trace routes (also with IPaddress geo lookup), check whether a range of ports is open, scan ahost for SSL versions and ciphers, and look up the location ofhosts and whether it's reachable from the public internet.