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Session Report

Summary:
Test run at: 2024-02-17 14:25:55 GMT
Client Prefix (v4): 166.1.173.x/24
Client AS (v4): 399820 (ATOMIC-NETWORKS-1)
IPv4 Probes: 66
Client Prefix (v6): 2602:fc2f:1xx::/40
Client AS (v6): 399820 (ATOMIC-NETWORKS-1)
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/56
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 (166.1.173.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
166.1.173.x/24/31399820no
166.1.173.x/24/30399820no
166.1.173.x/24/29399820no
166.1.173.x/24/28399820no
166.1.173.x/24/27399820no
166.1.173.x/24/26399820no
166.1.173.x/24/25399820no
166.1.173.x/24/24399820no
166.1.172.x/24/2362240no
166.1.175.x/24/2262240no
166.1.169.x/24/2162240no
166.1.165.x/24/2062240no
166.1.189.x/24/1962240no
166.1.141.x/24/1862240no
166.1.237.x/24/1762240no
166.1.45.x/24/16UNROUTEDno
166.0.173.x/24/1561317no
166.3.173.x/24/144152no
166.5.173.x/24/134152no
166.9.173.x/24/12UNROUTEDno
166.17.173.x/24/11UNROUTEDno
166.33.173.x/24/103372no
166.65.173.x/24/9UNROUTEDno
166.129.173.x/24/820057no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking

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::1592001:638:902:2000:ba27:ebff:fe86:2c51no
2001:4978:1fb:6400::d22001:638:902:2000:ba27:ebff:fe86:2c51no
2001:49aa:111:aa00::112001:638:902:2000:ba27:ebff:fe86:2c51no
fd11:1111:1111::11112001:638:902:2000:ba27:ebff:fe86:2c51no
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
2602:fc2f:1xx::/40/120399820yes
2602:fc2f:1xx::/40/112399820yes
2602:fc2f:1xx::/40/104399820yes
2602:fc2f:1xx::/40/96399820yes
2602:fc2f:1xx::/40/88399820yes
2602:fc2f:1xx::/40/80399820yes
2602:fc2f:1xx::/40/72399820yes
2602:fc2f:1xx::/40/64399820yes
2602:fc2f:1xx::/40/56399820yes
2602:fc2f:1xx::/40/48399820no
2602:fc2f:1xx::/40/40399820no
2602:fc2f:81xx::/40/32UNROUTEDno
2602:fcaf:1xx::/40/24UNROUTEDno
2602:7c2f:1xx::/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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