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Session Report

Summary:
Test run at: 2021-09-09 13:22:39 GMT
Client Prefix (v4): 186.251.136.x/24
Client AS (v4): 53225
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /8
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 (186.251.136.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
186.251.136.x/24/3153225yes
186.251.136.x/24/3053225yes
186.251.136.x/24/2953225yes
186.251.136.x/24/2853225yes
186.251.136.x/24/2753225yes
186.251.136.x/24/2653225yes
186.251.136.x/24/2553225yes
186.251.136.x/24/2453225yes
186.251.137.x/24/2353225yes
186.251.138.x/24/2253225yes
186.251.140.x/24/2153225yes
186.251.128.x/24/2053225yes
186.251.152.x/24/19262836yes
186.251.168.x/24/18262907yes
186.251.200.x/24/1728201yes
186.251.8.x/24/16262988yes
186.250.136.x/24/15262981yes
186.249.136.x/24/1428649yes
186.255.136.x/24/1326615yes
186.243.136.x/24/127738yes
186.235.136.x/24/1153202yes
186.219.136.x/24/1053167yes
186.187.136.x/24/9UNROUTEDno
186.123.136.x/24/811664yes

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 10 IP hop(s).
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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