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Session Report

Summary:
Test run at: 2021-09-24 22:10:25 GMT
Client Prefix (v4): 186.250.39.x/24
Client AS (v4): 263032
IPv4 Probes: 66
Client Prefix (v6): 2804:2d24:xx::/40
Client AS (v6): 263032
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
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 (186.250.39.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
186.250.39.x/24/31263032natblock
186.250.39.x/24/30263032natblock
186.250.39.x/24/29263032natblock
186.250.39.x/24/28263032natblock
186.250.39.x/24/27263032natblock
186.250.39.x/24/26263032natblock
186.250.39.x/24/25263032natblock
186.250.39.x/24/24263032natblock
186.250.38.x/24/23263032natblock
186.250.37.x/24/22263032natblock
186.250.35.x/24/21270863natblock
186.250.47.x/24/20264598natblock
186.250.55.x/24/19262807natblock
186.250.7.x/24/18262801natblock
186.250.103.x/24/17264141natblock
186.250.167.x/24/1652894natblock
186.251.39.x/24/1552914natblock
186.248.39.x/24/1423106natblock
186.254.39.x/24/1326615natblock
186.242.39.x/24/127738natblock
186.234.39.x/24/117162natblock
186.218.39.x/24/1028573natblock
186.186.39.x/24/9UNROUTEDnatblock
186.122.39.x/24/811664natblock

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 able to spoof routable, non-adjacent source addresses through the first 1 IP hop(s).
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
2804:2d24:xx::/40/120263032yes
2804:2d24:xx::/40/112263032yes
2804:2d24:xx::/40/104263032yes
2804:2d24:xx::/40/96263032yes
2804:2d24:xx::/40/88263032yes
2804:2d24:xx::/40/80263032yes
2804:2d24:xx::/40/72263032yes
2804:2d24:xx::/40/64263032yes
2804:2d24:xx::/40/56263032no
2804:2d24:xx::/40/48263032no
2804:2d24:xx::/40/40263032no
2804:2d24:80xx::/40/32263032no
2804:2da4:xx::/40/24265294no
2804:ad24: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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