Test run at: 2021-09-03 02:34:59 GMT
Client Prefix (v4): 66.187.5.x/24
Client AS (v4): 399804 (HOSTODO)
IPv4 Probes: 66
Client Prefix (v6): 2606:65c0:xx::/40
Client AS (v6): 399804 (HOSTODO)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server) Source address type IPv4 IPv6 Private - RFC1918 or ULA blocked blocked Routable ✔ received ✔ received Largest spoofable neighbor prefix length /8 /16
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 (66.187.5.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 66.187.5.x/24 /31 399804 yes 66.187.5.x/24 /30 399804 yes 66.187.5.x/24 /29 399804 yes 66.187.5.x/24 /28 399804 yes 66.187.5.x/24 /27 399804 yes 66.187.5.x/24 /26 399804 yes 66.187.5.x/24 /25 399804 yes 66.187.5.x/24 /24 399804 yes 66.187.4.x/24 /23 20150 yes 66.187.7.x/24 /22 UNROUTED no 66.187.1.x/24 /21 UNROUTED no 66.187.13.x/24 /20 UNROUTED no 66.187.21.x/24 /19 63133 yes 66.187.37.x/24 /18 14703 yes 66.187.69.x/24 /17 40156 yes 66.187.133.x/24 /16 33327 yes 66.186.5.x/24 /15 7296 yes 66.185.5.x/24 /14 17306 yes 66.191.5.x/24 /13 20115 yes 66.179.5.x/24 /12 7381 yes 66.171.5.x/24 /11 19201 yes 66.155.5.x/24 /10 6640 yes 66.251.5.x/24 /9 7029 yes 66.59.5.x/24 /8 17358 yes 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 yes Packets 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).IPv6 probes:
IPv6 Adjacent Netblock Testing:
Spoofed source address Destination Received 2001:48d0:101:501::159 2001:48d0:101:501::242 yes 2001:4978:1fb:6400::d2 2001:48d0:101:501::242 yes 2001:49aa:111:aa00::11 2001:48d0:101:501::242 yes fd11:1111:1111::1111 2001:48d0:101:501::242 no 2001:48d0:101:501::159 2001:48d0:101:501::247 yes 2001:4978:1fb:6400::d2 2001:48d0:101:501::247 yes 2001:49aa:111:aa00::11 2001:48d0:101:501::247 yes fd11:1111:1111::1111 2001:48d0:101:501::247 no 2001:48d0:101:501::159 2001:610:510:115:192:42:115:98 yes 2001:4978:1fb:6400::d2 2001:610:510:115:192:42:115:98 no 2001:49aa:111:aa00::11 2001:610:510:115:192:42:115:98 no fd11:1111:1111::1111 2001:610:510:115:192:42:115:98 no 2001:48d0:101:501::159 2001:630:212:225:225:90ff:fe0c:45a6 yes 2001:4978:1fb:6400::d2 2001:630:212:225:225:90ff:fe0c:45a6 no 2001:49aa:111:aa00::11 2001:630:212:225:225:90ff:fe0c:45a6 no fd11:1111:1111::1111 2001:630:212:225:225:90ff:fe0c:45a6 no 2001:48d0:101:501::159 2001:770:1c:7:225:90ff:fe0c:acb4 yes 2001:4978:1fb:6400::d2 2001:770:1c:7:225:90ff:fe0c:acb4 yes 2001:49aa:111:aa00::11 2001:770:1c:7:225:90ff:fe0c:acb4 yes fd11:1111:1111::1111 2001:770:1c:7:225:90ff:fe0c:acb4 no
Summary:
Spoofed source address (anon) Prefix
LengthASN of spoofed
source addressReceived 2606:65c0:xx::/40 /120 399804 yes 2606:65c0:xx::/40 /112 399804 yes 2606:65c0:xx::/40 /104 399804 yes 2606:65c0:xx::/40 /96 399804 yes 2606:65c0:xx::/40 /88 399804 yes 2606:65c0:xx::/40 /80 399804 yes 2606:65c0:xx::/40 /72 399804 yes 2606:65c0:xx::/40 /64 399804 yes 2606:65c0:xx::/40 /56 399804 yes 2606:65c0:xx::/40 /48 399804 yes 2606:65c0:xx::/40 /40 UNROUTED yes 2606:65c0:80xx::/40 /32 UNROUTED yes 2606:6540:xx::/40 /24 UNROUTED yes 2606:e5c0:xx::/40 /16 UNROUTED yes Meaning of status in Received column:
yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.Feedback:
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