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Session Report

Summary:
Test run at: 2024-05-08 16:54:41 GMT
Client Prefix (v4): 66.244.9.x/24
Client AS (v4): 23483 (SHASTACOE)
IPv4 Probes: 66
Client Prefix (v6): 2602:fd01:xx::/40
Client AS (v6): 23483 (SHASTACOE)
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 /26/64
Spoof status key
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 (66.244.9.x/24) can spoof 63 neighboring addresses (within your /26 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
66.244.9.x/24/3123483yes
66.244.9.x/24/3023483yes
66.244.9.x/24/2923483yes
66.244.9.x/24/2823483yes
66.244.9.x/24/2723483yes
66.244.9.x/24/2623483yes
66.244.9.x/24/2523483no
66.244.9.x/24/2423483no
66.244.8.x/24/2323483no
66.244.11.x/24/2223483no
66.244.13.x/24/2123483no
66.244.1.x/24/2023483no
66.244.25.x/24/1923483no
66.244.41.x/24/1823483no
66.244.73.x/24/1711550no
66.244.137.x/24/1632524no
66.245.9.x/24/15UNROUTEDno
66.246.9.x/24/148001no
66.240.9.x/24/137922no
66.252.9.x/24/1223522no
66.228.9.x/24/11135600no
66.212.9.x/24/1010823no
66.180.9.x/24/930452no
66.116.9.x/24/85742no

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)

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::1592001:638:902:2000:ba27:ebff:fe86:2c51no
2001:4978:1fb:6400::d22001:638:902:2000:ba27:ebff:fe86:2c51no
2001:49aa:111:aa00::112001:638:902:2000:ba27:ebff:fe86:2c51no
fd11:1111:1111::11112001:638:902:2000:ba27:ebff:fe86:2c51no
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
2001:48d0:101:501::1592607:8400:2880:4::80df:9d0dno
2001:4978:1fb:6400::d22607:8400:2880:4::80df:9d0dno
2001:49aa:111:aa00::112607:8400:2880:4::80df:9d0dno
fd11:1111:1111::11112607:8400:2880:4::80df:9d0dno
2001:48d0:101:501::1592607:f278:2:13:da3a:ddff:fe30:ce14no
2001:4978:1fb:6400::d22607:f278:2:13:da3a:ddff:fe30:ce14no
2001:49aa:111:aa00::112607:f278:2:13:da3a:ddff:fe30:ce14no
fd11:1111:1111::11112607:f278:2:13:da3a:ddff:fe30:ce14no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2602:fd01:xx::/40/12023483yes
2602:fd01:xx::/40/11223483yes
2602:fd01:xx::/40/10423483yes
2602:fd01:xx::/40/9623483yes
2602:fd01:xx::/40/8823483yes
2602:fd01:xx::/40/8023483yes
2602:fd01:xx::/40/7223483yes
2602:fd01:xx::/40/6423483yes
2602:fd01:xx::/40/5623483no
2602:fd01:xx::/40/4823483no
2602:fd01:xx::/40/4023483no
2602:fd01:80xx::/40/32UNROUTEDno
2602:fd81:xx::/40/2432018no
2602:7d01: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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