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Session Report

Summary:
Test run at: 2020-05-20 10:42:55 GMT
Client Prefix (v4): 71.42.210.x/24
Client AS (v4): 11427 (TWC-11427-TEXAS)
IPv4 Probes: 75
Client Prefix (v6): 2605:6001:f1xx::/40
Client AS (v6): 11427 (TWC-11427-TEXAS)
IPv6 Probes: 72
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 /30/56
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 (71.42.210.x/24) can spoof 3 neighboring addresses (within your /30 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
71.42.210.x/24/3111427yes
71.42.210.x/24/3011427yes
71.42.210.x/24/2911427no
71.42.210.x/24/2811427no
71.42.210.x/24/2711427no
71.42.210.x/24/2611427no
71.42.210.x/24/2511427no
71.42.210.x/24/2411427no
71.42.211.x/24/2311427no
71.42.208.x/24/2211427no
71.42.214.x/24/2111427no
71.42.218.x/24/2011427no
71.42.194.x/24/1911427no
71.42.242.x/24/1811427no
71.42.146.x/24/1711427no
71.42.82.x/24/1611427no
71.43.210.x/24/1533363no
71.40.210.x/24/1411427no
71.46.210.x/24/1333363no
71.34.210.x/24/12209no
71.58.210.x/24/117922no
71.10.210.x/24/1020115no
71.106.210.x/24/9701no
71.170.210.x/24/85650no

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 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::1592001:770:18:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:18:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4no
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fno
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
2001:48d0:101:501::1592607:f278:2:13:ba27:ebff:fe3f:b21eno
2001:4978:1fb:6400::d22607:f278:2:13:ba27:ebff:fe3f:b21eno
2001:49aa:111:aa00::112607:f278:2:13:ba27:ebff:fe3f:b21eno
fd11:1111:1111::11112607:f278:2:13:ba27:ebff:fe3f:b21eno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2605:6001:f1xx::/40/12011427yes
2605:6001:f1xx::/40/11211427yes
2605:6001:f1xx::/40/10411427yes
2605:6001:f1xx::/40/9611427yes
2605:6001:f1xx::/40/8811427yes
2605:6001:f1xx::/40/8011427yes
2605:6001:f1xx::/40/7211427yes
2605:6001:f1xx::/40/6411427yes
2605:6001:f1xx::/40/5611427yes
2605:6001:f1xx::/40/4811427no
2605:6001:f1xx::/40/4011427no
2605:6001:71xx::/40/3211427no
2605:6081:f1xx::/40/24UNROUTEDno
2605:e001:f1xx::/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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