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Session Report

Summary:
Test run at: 2021-09-04 14:52:04 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 receivedreceived
Largest spoofable neighbor prefix length /8/16

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 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
66.187.5.x/24/31399804yes
66.187.5.x/24/30399804yes
66.187.5.x/24/29399804yes
66.187.5.x/24/28399804yes
66.187.5.x/24/27399804yes
66.187.5.x/24/26399804yes
66.187.5.x/24/25399804yes
66.187.5.x/24/24399804yes
66.187.4.x/24/2320150yes
66.187.7.x/24/22UNROUTEDno
66.187.1.x/24/21UNROUTEDno
66.187.13.x/24/20UNROUTEDno
66.187.21.x/24/1963133yes
66.187.37.x/24/1814703yes
66.187.69.x/24/1740156yes
66.187.133.x/24/1633327yes
66.186.5.x/24/157296yes
66.185.5.x/24/1417306yes
66.191.5.x/24/1320115yes
66.179.5.x/24/127381yes
66.171.5.x/24/1119201yes
66.155.5.x/24/106640yes
66.251.5.x/24/97029yes
66.59.5.x/24/817358yes

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).
IPv6 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:48d0:101:501::242yes
2001:4978:1fb:6400::d22001:48d0:101:501::242yes
2001:49aa:111:aa00::112001:48d0:101:501::242yes
fd11:1111:1111::11112001:48d0:101:501::242no
2001:48d0:101:501::1592001:48d0:101:501::247yes
2001:4978:1fb:6400::d22001:48d0:101:501::247yes
2001:49aa:111:aa00::112001:48d0:101:501::247yes
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592001:610:510:115:192:42:115:98yes
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:45a6yes
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:acb4yes
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4yes
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4yes
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::/40/56399804yes
2606:65c0:xx::/40/48399804yes
2606:65c0:xx::/40/40UNROUTEDyes
2606:65c0:80xx::/40/32UNROUTEDyes
2606:6540:xx::/40/24UNROUTEDyes
2606:e5c0:xx::/40/16UNROUTEDyes

Meaning of status in Received column:

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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