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Session Report

Summary:
Test run at: 2021-06-04 11:22:58 GMT
Client Prefix (v4): 194.36.75.x/24
Client AS (v4): 51333 (ARCOLINK-ASN)
IPv4 Probes: 66
Client Prefix (v6): 2a0c:bdc0:10xx::/40
Client AS (v6): 51333 (ARCOLINK-ASN)
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 /8/16
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 (194.36.75.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
194.36.75.x/24/3151333yes
194.36.75.x/24/3051333yes
194.36.75.x/24/2951333yes
194.36.75.x/24/2851333yes
194.36.75.x/24/2751333yes
194.36.75.x/24/2651333yes
194.36.75.x/24/2551333yes
194.36.75.x/24/2451333yes
194.36.74.x/24/2351333yes
194.36.73.x/24/2251333yes
194.36.79.x/24/21UNROUTEDno
194.36.67.x/24/2028846yes
194.36.91.x/24/1944709yes
194.36.107.x/24/1848146yes
194.36.11.x/24/17198864yes
194.36.203.x/24/1642947yes
194.37.75.x/24/1541915yes
194.38.75.x/24/14UNROUTEDno
194.32.75.x/24/1338862yes
194.44.75.x/24/123255yes
194.52.75.x/24/11UNROUTEDno
194.4.75.x/24/1039771yes
194.100.75.x/24/916086yes
194.164.75.x/24/88897yes

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
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 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
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fyes
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fno
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a0c:bdc0:10xx::/40/12051333yes
2a0c:bdc0:10xx::/40/11251333yes
2a0c:bdc0:10xx::/40/10451333yes
2a0c:bdc0:10xx::/40/9651333yes
2a0c:bdc0:10xx::/40/8851333yes
2a0c:bdc0:10xx::/40/8051333yes
2a0c:bdc0:10xx::/40/7251333yes
2a0c:bdc0:10xx::/40/6451333yes
2a0c:bdc0:10xx::/40/5651333yes
2a0c:bdc0:10xx::/40/4851333yes
2a0c:bdc0:10xx::/40/4051333yes
2a0c:bdc0:90xx::/40/3251333yes
2a0c:bd40:10xx::/40/24UNROUTEDno
2a0c:3dc0:10xx::/40/1661323yes

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
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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