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Session Report

Summary:
Test run at: 2017-09-18 12:20:17 GMT
Client Prefix (v4): 204.16.236.x/24
Client AS (v4): 14312 (1-800CONTACTS)
IPv4 Probes: 116
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
Largest spoofable neighbor prefix length none
Spoof status key
receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.
IPv4 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  

IPv4 Adjacent Netblock Testing:

Your host (204.16.236.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
204.16.236.x/24/3114312sendto
204.16.236.x/24/3014312sendto
204.16.236.x/24/2914312sendto
204.16.236.x/24/2814312sendto
204.16.236.x/24/2714312sendto
204.16.236.x/24/2614312sendto
204.16.236.x/24/2514312sendto
204.16.236.x/24/2414312sendto
204.16.237.x/24/2314312sendto
204.16.238.x/24/2214312sendto
204.16.232.x/24/2132132sendto
204.16.228.x/24/2032654sendto
204.16.252.x/24/19UNROUTEDsendto
204.16.204.x/24/1833554sendto
204.16.172.x/24/17UNROUTEDsendto
204.16.108.x/24/1617113sendto
204.17.236.x/24/15UNROUTEDsendto
204.18.236.x/24/14UNROUTEDsendto
204.20.236.x/24/13UNROUTEDsendto
204.24.236.x/24/1213325sendto
204.0.236.x/24/112914sendto
204.48.236.x/24/1023065sendto
204.80.236.x/24/9UNROUTEDsendto
204.144.236.x/24/8UNROUTEDsendto

Meaning of status in Received column:

sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.
Feedback:
We welcome questions and feedback to the Spoofer Information Mailing List and invite users to join the Spoofer Users Mailing List for discussion and announcements.
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