Test run at: 2023-09-12 03:16:16 GMT
Client Prefix (v4): 104.28.243.x/24
Client AS (v4): 13335 (CLOUDFLARENET)
IPv4 Probes: 69
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 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.
IPv4 Adjacent Netblock Testing:
Your host (104.28.243.x/24) can spoof 0 neighboring addresses
Spoofed source address (anon) Prefix
ASN of spoofed
Received 104.28.243.x/24 /31 13335 sendto 104.28.243.x/24 /30 13335 sendto 104.28.243.x/24 /29 13335 sendto 104.28.243.x/24 /28 13335 sendto 104.28.243.x/24 /27 13335 sendto 104.28.243.x/24 /26 13335 sendto 104.28.243.x/24 /25 13335 sendto 104.28.243.x/24 /24 13335 sendto 104.28.242.x/24 /23 13335 sendto 104.28.241.x/24 /22 13335 natblock 104.28.247.x/24 /21 13335 sendto 104.28.251.x/24 /20 13335 sendto 104.28.227.x/24 /19 13335 sendto 104.28.211.x/24 /18 13335 sendto 104.28.179.x/24 /17 13335 sendto 104.28.115.x/24 /16 13335 sendto 104.29.243.x/24 /15 13335 sendto 104.30.243.x/24 /14 13335 sendto 104.24.243.x/24 /13 13335 sendto 104.20.243.x/24 /12 13335 sendto 104.12.243.x/24 /11 7018 sendto 104.60.243.x/24 /10 7018 sendto 104.92.243.x/24 /9 16625 sendto 104.156.243.x/24 /8 20473 sendto
Meaning of status in Received column:
natblock Spoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address. sendto The spoofer client was unable to send spoofed headers due to an operating system restriction.
IPv4 Outbound Filtering Depth:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback: