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Session Report

Summary:
Test run at: 2024-09-03 00:57:10 GMT
Client Prefix (v4): 87.209.18.x/24
Client AS (v4): 50266 (tmobile-thuis)
IPv4 Probes: 69
Client Prefix (v6): 2a07:54c7:51xx::/40
Client AS (v6): 216455
IPv6 Probes: 68
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedreceived
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 (87.209.18.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
87.209.18.x/24/3150266natblock
87.209.18.x/24/3050266natblock
87.209.18.x/24/2950266natblock
87.209.18.x/24/2850266natblock
87.209.18.x/24/2750266natblock
87.209.18.x/24/2650266natblock
87.209.18.x/24/2550266natblock
87.209.18.x/24/2450266natblock
87.209.19.x/24/2350266natblock
87.209.16.x/24/2250266natblock
87.209.22.x/24/2150266natblock
87.209.26.x/24/2050266natblock
87.209.2.x/24/1950266natblock
87.209.50.x/24/1850266natblock
87.209.82.x/24/1750266natblock
87.209.146.x/24/1650266natblock
87.208.18.x/24/1550266natblock
87.211.18.x/24/1413127natblock
87.213.18.x/24/1313127natblock
87.217.18.x/24/1212479natblock
87.193.18.x/24/1120676natblock
87.241.18.x/24/108220natblock
87.145.18.x/24/93320natblock
87.81.18.x/24/85607natblock

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 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::1592001:40b0:7500:280::5458:517ayes
2001:4978:1fb:6400::d22001:40b0:7500:280::5458:517ayes
2001:49aa:111:aa00::112001:40b0:7500:280::5458:517ano
fd11:1111:1111::11112001:40b0:7500:280::5458:517ayes
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::1592001:630:212:225:225:90ff: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:acb4no
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
2a07:54c7:51xx::/40/120216455yes
2a07:54c7:51xx::/40/112216455yes
2a07:54c7:51xx::/40/104216455yes
2a07:54c7:51xx::/40/96216455yes
2a07:54c7:51xx::/40/88216455yes
2a07:54c7:51xx::/40/80216455yes
2a07:54c7:51xx::/40/72216455yes
2a07:54c7:51xx::/40/64216455yes
2a07:54c7:51xx::/40/56216455yes
2a07:54c7:51xx::/40/48216455yes
2a07:54c7:51xx::/40/40216455yes
2a07:54c7:d1xx::/40/32UNROUTEDyes
2a07:5447:51xx::/40/2424875yes
2a07:d4c7:51xx::/40/16UNROUTEDyes

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:
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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