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Session Report

Summary:
Test run at: 2021-10-29 19:58:54 GMT
Client Prefix (v4): 176.126.240.x/24
Client AS (v4): 44684 (MYTHIC)
IPv4 Probes: 66
Client Prefix (v6): 2a00:1098:xx::/40
Client AS (v6): 44684 (MYTHIC)
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 /21/32
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.
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 (176.126.240.x/24) can spoof 2047 neighboring addresses (within your /21 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
176.126.240.x/24/3144684yes
176.126.240.x/24/3044684yes
176.126.240.x/24/2944684yes
176.126.240.x/24/2844684yes
176.126.240.x/24/2744684yes
176.126.240.x/24/2644684yes
176.126.240.x/24/2544684yes
176.126.240.x/24/2444684yes
176.126.241.x/24/2344684yes
176.126.242.x/24/2244684yes
176.126.244.x/24/2144684yes
176.126.248.x/24/2047544no
176.126.224.x/24/19199335no
176.126.208.x/24/182614no
176.126.176.x/24/17UNROUTEDno
176.126.112.x/24/16UNROUTEDno
176.127.240.x/24/153303no
176.124.240.x/24/14205363no
176.122.240.x/24/13209921no
176.118.240.x/24/12200802no
176.110.240.x/24/1131028no
176.94.240.x/24/103209no
176.62.240.x/24/943530no
176.254.240.x/24/85607no

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 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
2a00:1098:xx::/40/12044684yes
2a00:1098:xx::/40/11244684yes
2a00:1098:xx::/40/10444684yes
2a00:1098:xx::/40/9644684yes
2a00:1098:xx::/40/8844684yes
2a00:1098:xx::/40/8044684yes
2a00:1098:xx::/40/7244684yes
2a00:1098:xx::/40/6444684yes
2a00:1098:xx::/40/5644684yes
2a00:1098:xx::/40/4844684yes
2a00:1098:xx::/40/4044684yes
2a00:1098:80xx::/40/3244684yes
2a00:1018:xx::/40/2425394no
2a00:9098: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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