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Session Report

Summary:
Test run at: 2021-10-03 01:23:44 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 IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length none/64

Meaning of result status in column:

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 Adjacent Netblock Testing:

Your host (66.187.5.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
66.187.5.x/24/31399804no
66.187.5.x/24/30399804no
66.187.5.x/24/29399804no
66.187.5.x/24/28399804no
66.187.5.x/24/27399804no
66.187.5.x/24/26399804no
66.187.5.x/24/25399804no
66.187.5.x/24/24399804no
66.187.4.x/24/23399804no
66.187.7.x/24/22UNROUTEDno
66.187.1.x/24/21UNROUTEDno
66.187.13.x/24/20UNROUTEDno
66.187.21.x/24/1963133no
66.187.37.x/24/1814703no
66.187.69.x/24/1740156no
66.187.133.x/24/1633327no
66.186.5.x/24/157296no
66.185.5.x/24/1417306no
66.191.5.x/24/1320115no
66.179.5.x/24/127381no
66.171.5.x/24/1119201no
66.155.5.x/24/106640no
66.251.5.x/24/97029no
66.59.5.x/24/817358no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
IPv6 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:48d0:101:501::242no
2001:4978:1fb:6400::d22001:48d0:101:501::242no
2001:49aa:111:aa00::112001:48d0:101:501::242no
fd11:1111:1111::11112001:48d0:101:501::242no
2001:48d0:101:501::1592001:48d0:101:501::247no
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592001:610:510:115:192:42:115:98no
2001:4978:1fb:6400::d22001:610:510:115:192:42:115:98no
2001:49aa:111:aa00::112001:610:510:115:192:42:115:98no
fd11:1111:1111::11112001:610:510:115:192:42:115:98no
2001:48d0:101:501::1592001:630:212:225:225:90ff:fe0c:45a6no
2001:4978:1fb:6400::d22001:630:212:225:225:90ff:fe0c:45a6no
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:48d0:101:501::1592001:770:1c:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2606:65c0:xx::/40/120399804yes
2606:65c0:xx::/40/112399804yes
2606:65c0:xx::/40/104399804yes
2606:65c0:xx::/40/96399804yes
2606:65c0:xx::/40/88399804yes
2606:65c0:xx::/40/80399804yes
2606:65c0:xx::/40/72399804yes
2606:65c0:xx::/40/64399804yes
2606:65c0:xx::/40/56399804no
2606:65c0:xx::/40/48399804no
2606:65c0:xx::/40/40UNROUTEDno
2606:65c0:80xx::/40/32UNROUTEDno
2606:6540:xx::/40/24UNROUTEDno
2606:e5c0:xx::/40/16UNROUTEDno

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 (but that netblock is within the source AS)
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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