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Session Report

Summary:
Test run at: 2022-06-18 10:24:41 GMT
Client Prefix (v4): 188.143.121.x/24
Client AS (v4): 20845 (DIGICABLE)
IPv4 Probes: 60
Client Prefix (v6): 2a01:36d:1xx::/40
Client AS (v6): 20845 (DIGICABLE)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedreceived
Largest spoofable neighbor prefix length none/16
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 (188.143.121.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
188.143.121.x/24/3120845natblock
188.143.121.x/24/3020845natblock
188.143.121.x/24/2920845natblock
188.143.121.x/24/2820845natblock
188.143.121.x/24/2720845natblock
188.143.121.x/24/2620845natblock
188.143.121.x/24/2520845natblock
188.143.121.x/24/2420845natblock
188.143.120.x/24/2320845natblock
188.143.123.x/24/2220845natblock
188.143.125.x/24/2120845natblock
188.143.113.x/24/2020845natblock
188.143.105.x/24/1920845natblock
188.143.89.x/24/1820845natblock
188.143.57.x/24/1720845natblock
188.143.249.x/24/1644050natblock
188.142.121.x/24/151136natblock
188.141.121.x/24/146830natblock
188.139.121.x/24/13UNROUTEDnatblock
188.135.121.x/24/1250010natblock
188.159.121.x/24/1139501natblock
188.175.121.x/24/1016246natblock
188.207.121.x/24/91136natblock
188.15.121.x/24/83269natblock

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::242yes
2001:4978:1fb:6400::d22001:48d0:101:501::242yes
2001:49aa:111:aa00::112001:48d0:101:501::242yes
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::247yes
2001:49aa:111:aa00::112001:48d0:101:501::247yes
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:acb4yes
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4yes
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
2a01:36d:1xx::/40/12020845yes
2a01:36d:1xx::/40/11220845yes
2a01:36d:1xx::/40/10420845yes
2a01:36d:1xx::/40/9620845yes
2a01:36d:1xx::/40/8820845yes
2a01:36d:1xx::/40/8020845yes
2a01:36d:1xx::/40/7220845yes
2a01:36d:1xx::/40/6420845yes
2a01:36d:1xx::/40/5620845yes
2a01:36d:1xx::/40/4820845yes
2a01:36d:1xx::/40/4020845yes
2a01:36d:81xx::/40/3220845yes
2a01:3ed:1xx::/40/24UNROUTEDyes
2a01:836d:1xx::/40/16UNROUTEDyes

Meaning of status in Received column:

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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