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Session Report

Summary:
Test run at: 2022-03-31 20:16:16 GMT
Client Prefix (v4): 186.208.216.x/24
Client AS (v4): 28577
IPv4 Probes: 60
Client Prefix (v6): 2804:d74:10xx::/40
Client AS (v6): 28577
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 /8/32
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.

Warnings:

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 (186.208.216.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
186.208.216.x/24/3128577natblock
186.208.216.x/24/3028577natblock
186.208.216.x/24/2928577yes
186.208.216.x/24/2828577yes
186.208.216.x/24/2728577yes
186.208.216.x/24/2628577yes
186.208.216.x/24/2528577yes
186.208.216.x/24/2428577yes
186.208.217.x/24/2328577yes
186.208.218.x/24/2228577yes
186.208.220.x/24/2128577yes
186.208.208.x/24/2053224yes
186.208.200.x/24/1928279yes
186.208.248.x/24/18263086yes
186.208.152.x/24/1752881yes
186.208.88.x/24/1652530yes
186.209.216.x/24/1528638yes
186.210.216.x/24/1453006yes
186.212.216.x/24/1318881yes
186.216.216.x/24/1252999yes
186.192.216.x/24/11262732yes
186.240.216.x/24/107738yes
186.144.216.x/24/910620yes
186.80.216.x/24/810620yes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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 10 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::242yes
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::247yes
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::1592001:610:510:115:192:42:115:98yes
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: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:d74:10xx::/40/12028577yes
2804:d74:10xx::/40/11228577yes
2804:d74:10xx::/40/10428577yes
2804:d74:10xx::/40/9628577yes
2804:d74:10xx::/40/8828577yes
2804:d74:10xx::/40/8028577yes
2804:d74:10xx::/40/7228577yes
2804:d74:10xx::/40/6428577yes
2804:d74:10xx::/40/5628577yes
2804:d74:10xx::/40/4828577yes
2804:d74:10xx::/40/4028577yes
2804:d74:90xx::/40/3228577yes
2804:df4:10xx::/40/24UNROUTEDno
2804:8d74:10xx::/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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