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Session Report

Summary:
Test run at: 2024-08-09 08:17:51 GMT
Client Prefix (v4): 161.38.188.x/24
Client AS (v4): 398123 (IRACING-CORPORATE)
IPv4 Probes: 69
Client Prefix (v6): 2620:13d:e0xx::/40
Client AS (v6): 398123 (IRACING-CORPORATE)
IPv6 Probes: 68
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
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 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  

IPv4 Adjacent Netblock Testing:

Your host (161.38.188.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
161.38.188.x/24/31398123natblock
161.38.188.x/24/30398123natblock
161.38.188.x/24/29398123natblock
161.38.188.x/24/28398123natblock
161.38.188.x/24/27398123natblock
161.38.188.x/24/26398123natblock
161.38.188.x/24/25398123natblock
161.38.188.x/24/24398123natblock
161.38.189.x/24/23398123natblock
161.38.190.x/24/2222147natblock
161.38.184.x/24/21396982natblock
161.38.180.x/24/20398475natblock
161.38.172.x/24/19397453natblock
161.38.156.x/24/1811976natblock
161.38.252.x/24/17UNROUTEDnatblock
161.38.60.x/24/16398779natblock
161.39.188.x/24/15UNROUTEDnatblock
161.36.188.x/24/14UNROUTEDnatblock
161.34.188.x/24/132514natblock
161.46.188.x/24/12UNROUTEDnatblock
161.54.188.x/24/11200060natblock
161.6.188.x/24/1032071natblock
161.102.188.x/24/9UNROUTEDnatblock
161.166.188.x/24/810695natblock

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

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 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  
IPv6 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:200:e000:2:225:90ff:fe0c:4684no
2001:4978:1fb:6400::d22001:200:e000:2:225:90ff:fe0c:4684no
2001:49aa:111:aa00::112001:200:e000:2:225:90ff:fe0c:4684no
fd11:1111:1111::11112001:200:e000:2:225:90ff:fe0c:4684no
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::1592001:770:1c: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
2620:13d:e0xx::/40/120398123yes
2620:13d:e0xx::/40/112398123yes
2620:13d:e0xx::/40/104398123yes
2620:13d:e0xx::/40/96398123yes
2620:13d:e0xx::/40/88398123yes
2620:13d:e0xx::/40/80398123yes
2620:13d:e0xx::/40/72398123yes
2620:13d:e0xx::/40/64398123yes
2620:13d:e0xx::/40/56398123no
2620:13d:e0xx::/40/48398123no
2620:13d:e0xx::/40/40UNROUTEDno
2620:13d:60xx::/40/32UNROUTEDno
2620:1bd:e0xx::/40/24UNROUTEDno
2620:813d:e0xx::/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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