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Internet Atlas Gallery

GTrace - Geographical Traceroute

Ram Periakarrupen
Cooperative Association for Internet Data Analysis (CAIDA)
San Diego Supercomputer Center (SDSC)
University of California, San Diego (UCSD)

Visualization Thumbnail About the Visualization
Visualization Techniques:
(Technique1): Plot lat/long points; draw straight lines between hops.
Key Visualization Mappings:
(Mapping1): Line color shows confidence in location mapping.
  • Green line = high confidence in both endpoints
  • Yellow line = high confidence in one endpoint; moderate confidence in other
  • Blue line = moderate confidence in both endpoints
  • Red line = geographic center of the country where the IP address is believed to be located, or the location obtained from the whois record of the associated domain name
(Mapping2): Colored ball indicates the data source used for the lat/long mapping
  • Green = DNS LOC record
  • Yellow = Match found in GTrace DBs or user DBs
  • Blue = Domain parsing file
  • Cyan = Hostname reduction match
  • Red = WHOIS record of the best-match domain name for IP address
  • Gray = Country code
(Mapping3): Color of RTT value shows how many packets were lost:
  • Black = none
  • Blue = lost one pkt
  • Red = lost 2 or 3 pkts
Visualization Tools:
(Tool1) traceroute by Van Jacobsen
(Tool2) GTrace java code by Ram Periakaruppen (CAIDA).
(Tool3) NetGeo utilities by CAIDA
Click Image for Full-Size Visualization Back