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Session Report

Summary:
Test run at: 2025-01-18 18:24:43 GMT
Client Prefix (v4): 168.105.58.x/24
Client AS (v4): 6360 (UNIVHAWAII)
IPv4 Probes: 162
Client Prefix (v6): 2607:f278:41xx::/40
Client AS (v6): 6360 (UNIVHAWAII)
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 /18/32
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 (168.105.58.x/24) can spoof 16383 neighboring addresses (within your /18 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
168.105.58.x/24/316360no
168.105.58.x/24/306360yes
168.105.58.x/24/296360yes
168.105.58.x/24/286360yes
168.105.58.x/24/276360yes
168.105.58.x/24/266360yes
168.105.58.x/24/256360yes
168.105.58.x/24/246360yes
168.105.59.x/24/236360yes
168.105.56.x/24/226360yes
168.105.62.x/24/216360yes
168.105.50.x/24/206360yes
168.105.42.x/24/196360yes
168.105.26.x/24/186360yes
168.105.122.x/24/176360no
168.105.186.x/24/166360no
168.104.58.x/24/15UNROUTEDno
168.107.58.x/24/14UNROUTEDno
168.109.58.x/24/13UNROUTEDno
168.97.58.x/24/12UNROUTEDno
168.121.58.x/24/11264675no
168.73.58.x/24/1021928no
168.41.58.x/24/91761no
168.233.58.x/24/8UNROUTEDno

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::1592001:40b0:7500:280::5458:517ayes
2001:4978:1fb:6400::d22001:40b0:7500:280::5458:517ayes
2001:49aa:111:aa00::112001:40b0:7500:280::5458:517ayes
fd11:1111:1111::11112001:40b0:7500:280::5458:517ano
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::1592001:638:902:2000: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
2607:f278:41xx::/40/1206360yes
2607:f278:41xx::/40/1126360yes
2607:f278:41xx::/40/1046360yes
2607:f278:41xx::/40/966360yes
2607:f278:41xx::/40/886360yes
2607:f278:41xx::/40/806360yes
2607:f278:41xx::/40/726360yes
2607:f278:41xx::/40/646360yes
2607:f278:41xx::/40/566360yes
2607:f278:41xx::/40/486360yes
2607:f278:41xx::/40/406360yes
2607:f278:c1xx::/40/326360yes
2607:f2f8:41xx::/40/2425795no
2607:7278:41xx::/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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