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Session Report

Summary:
Test run at: 2024-01-24 01:49:00 GMT
Client Prefix (v4): 104.153.235.x/24
Client AS (v4): 40401 (BACKBLAZE)
IPv4 Probes: 69
Client Prefix (v6): 2605:72c0:7xx::/40
Client AS (v6): 40401 (BACKBLAZE)
IPv6 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedreceived
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 (104.153.235.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
104.153.235.x/24/3140401yes
104.153.235.x/24/3040401yes
104.153.235.x/24/2940401yes
104.153.235.x/24/2840401yes
104.153.235.x/24/2740401yes
104.153.235.x/24/2640401yes
104.153.235.x/24/2540401yes
104.153.235.x/24/2440401yes
104.153.234.x/24/2340401yes
104.153.233.x/24/2240401yes
104.153.239.x/24/21UNROUTEDno
104.153.227.x/24/2019001yes
104.153.251.x/24/1940945yes
104.153.203.x/24/18UNROUTEDno
104.153.171.x/24/1764257yes
104.153.107.x/24/1613789yes
104.152.235.x/24/1554483yes
104.155.235.x/24/14396982yes
104.157.235.x/24/1336493yes
104.145.235.x/24/1264245yes
104.137.235.x/24/1133363yes
104.185.235.x/24/107018yes
104.217.235.x/24/9UNROUTEDno
104.25.235.x/24/813335yes

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::242yes
2001:49aa:111:aa00::112001:48d0:101:501::242yes
fd11:1111:1111::11112001:48d0:101:501::242yes
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::247yes
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::1592001:638:902:2000:ba27:ebff:fe86:2c51yes
2001:4978:1fb:6400::d22001:638:902:2000:ba27:ebff:fe86:2c51yes
2001:49aa:111:aa00::112001:638:902:2000:ba27:ebff:fe86:2c51yes
fd11:1111:1111::11112001:638:902:2000:ba27:ebff:fe86:2c51no
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:acb4yes
2001:48d0:101:501::1592607:8400:2880:4::80df:9d0dyes
2001:4978:1fb:6400::d22607:8400:2880:4::80df:9d0dyes
2001:49aa:111:aa00::112607:8400:2880:4::80df:9d0dyes
fd11:1111:1111::11112607:8400:2880:4::80df:9d0dno
2001:48d0:101:501::1592607:f278:2:13:da3a:ddff:fe30:ce14yes
2001:4978:1fb:6400::d22607:f278:2:13:da3a:ddff:fe30:ce14yes
2001:49aa:111:aa00::112607:f278:2:13:da3a:ddff:fe30:ce14yes
fd11:1111:1111::11112607:f278:2:13:da3a:ddff:fe30:ce14yes
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2605:72c0:7xx::/40/12040401yes
2605:72c0:7xx::/40/11240401yes
2605:72c0:7xx::/40/10440401yes
2605:72c0:7xx::/40/9640401yes
2605:72c0:7xx::/40/8840401yes
2605:72c0:7xx::/40/8040401yes
2605:72c0:7xx::/40/7240401yes
2605:72c0:7xx::/40/6440401yes
2605:72c0:7xx::/40/5640401yes
2605:72c0:7xx::/40/4840401yes
2605:72c0:7xx::/40/4040401yes
2605:72c0:87xx::/40/32UNROUTEDyes
2605:7240:7xx::/40/2410352yes
2605:f2c0:7xx::/40/167314yes

Meaning of status in Received column:

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:
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