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Session Report

Summary:
Test run at: 2022-06-05 17:17:53 GMT
Client Prefix (v4): 185.170.216.x/24
Client AS (v4): 25581 (GMG)
IPv4 Probes: 60
Client Prefix (v6): 2a00:da60:axx::/40
Client AS (v6): 25581 (GMG)
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 /27/64
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 (185.170.216.x/24) can spoof 31 neighboring addresses (within your /27 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.170.216.x/24/3125581yes
185.170.216.x/24/3025581yes
185.170.216.x/24/2925581yes
185.170.216.x/24/2825581yes
185.170.216.x/24/2725581yes
185.170.216.x/24/2625581no
185.170.216.x/24/2525581no
185.170.216.x/24/2425581no
185.170.217.x/24/2325581no
185.170.218.x/24/2225581no
185.170.220.x/24/2125581no
185.170.208.x/24/20134835no
185.170.200.x/24/19206956no
185.170.248.x/24/18204996no
185.170.152.x/24/1731727no
185.170.88.x/24/1648038no
185.171.216.x/24/1561157no
185.168.216.x/24/14204521no
185.174.216.x/24/1347302no
185.162.216.x/24/1256466no
185.186.216.x/24/1144033no
185.138.216.x/24/10200148no
185.234.216.x/24/9UNROUTEDno
185.42.216.x/24/8UNROUTEDno

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 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::1592001:48d0:101:501::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
2a00:da60:axx::/40/12025581yes
2a00:da60:axx::/40/11225581yes
2a00:da60:axx::/40/10425581yes
2a00:da60:axx::/40/9625581yes
2a00:da60:axx::/40/8825581yes
2a00:da60:axx::/40/8025581yes
2a00:da60:axx::/40/7225581yes
2a00:da60:axx::/40/6425581yes
2a00:da60:axx::/40/5625581no
2a00:da60:axx::/40/4825581no
2a00:da60:axx::/40/4025581no
2a00:da60:8axx::/40/3225581no
2a00:dae0:axx::/40/24UNROUTEDno
2a00:5a60:axx::/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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