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tracepath from 157.82.116.65 (perfsonar2.icepp.jp) to 3.237.20.246 (ec2-3-237-20-246.compute-1.amazonaws.com) for 3.237.20.246

CGI script maintainer: Les Cottrell, SLAC. Script version 7.7, 8/9/2018, Les Cottrell.
Download perl source code.
To perform a traceroute/ping/tracepath function from perfsonar2.icepp.jp to the target, enter the desired target host.domain (e.g. www.yahoo.com) or Internet address (e.g. 137.138.28.228) in the box below. Note the fucntion is performed for the target's resolved Internet address.
Enter target name or address: then push 'Enter' key.
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Please note that traceroutes can appear similar to port scans. If you see a suspected port scan alert, for example from your firewall, with a series of ports in the range 33434 - 33465, coming from perfsonar2.icepp.jp it is probably a reverse traceroute from our web based reverse traceroute server. Please do NOT report this to us, it will almost certainly be a waste of both of our times. For more on this see
Traceroute security issues.
Executing exec(/bin/tracepath  3.237.20.246)
 1?: [LOCALHOST]                                         pmtu 1500
 1:  itc-gateway.icepp.jp                                  0.414ms 
 1:  itc-gateway.icepp.jp                                  1.713ms 
 2:  tokyo1-RM-ET-6-0-0-50.s5.sinet.ad.jp                  0.852ms 
 3:  osaka-GM-ET-7-1-0-1114.s5.sinet.ad.jp                 7.642ms 
 4:  ae-22.a01.osakjp02.jp.bb.gin.ntt.net                  8.232ms asymm  9 
 5:  ae-5.r25.osakjp02.jp.bb.gin.ntt.net                   8.447ms asymm  7 
 6:  ae-3.r24.lsanca07.us.bb.gin.ntt.net                 114.106ms asymm  8 
 7:  ae-3.r24.dllstx09.us.bb.gin.ntt.net                 137.173ms asymm  9 
 8:  ae-2.r10.dllstx09.us.bb.gin.ntt.net                 145.145ms asymm  9 
 9: