Test run at: 2024-02-16 10:03:28 GMT
Client Prefix (v4): 185.252.140.x/24
Client AS (v4): 200249
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server) Source address type IPv4 Private - RFC1918 blocked Routable rewritten Largest spoofable neighbor prefix length /25
Spoof status key received Spoofed packet was received. ✔ Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it. rewritten Spoofed packet was received, but the source address was changed en route. blocked Spoofed packet was not received, but unspoofed packet was. unknown Neither spoofed nor unspoofed packet was received.
Warnings:
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 (185.252.140.x/24) can spoof 127 neighboring addresses (within your /25 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 185.252.140.x/24 /31 200249 yes 185.252.140.x/24 /30 200249 no 185.252.140.x/24 /29 200249 yes 185.252.140.x/24 /28 200249 yes 185.252.140.x/24 /27 200249 yes 185.252.140.x/24 /26 200249 yes 185.252.140.x/24 /25 200249 yes 185.252.140.x/24 /24 200249 no 185.252.141.x/24 /23 200249 no 185.252.142.x/24 /22 200249 no 185.252.136.x/24 /21 12357 rewritten 185.252.132.x/24 /20 UNROUTED no 185.252.156.x/24 /19 24935 rewritten 185.252.172.x/24 /18 34977 rewritten 185.252.204.x/24 /17 43700 rewritten 185.252.12.x/24 /16 15704 rewritten 185.253.140.x/24 /15 UNROUTED no 185.254.140.x/24 /14 48943 rewritten 185.248.140.x/24 /13 48314 rewritten 185.244.140.x/24 /12 15377 rewritten 185.236.140.x/24 /11 211064 rewritten 185.220.140.x/24 /10 UNROUTED no 185.188.140.x/24 /9 UNROUTED no 185.124.140.x/24 /8 203751 rewritten Meaning of status in Received column:
no Packets spoofed from adjacent netblock were not received, probably due to blocking yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) rewritten The source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.
IPv4 Outbound Filtering Depth:
The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 2 IP hop(s).Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback:
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