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Session Report

Summary:
Test run at: 2024-12-19 17:10:02 GMT
Client Prefix (v4): 23.251.100.x/24
Client AS (v4): 21859 (ZEN-ECN)
IPv4 Probes: 69
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /30
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 (23.251.100.x/24) can spoof 3 neighboring addresses (within your /30 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
23.251.100.x/24/3121859yes
23.251.100.x/24/3021859yes
23.251.100.x/24/2921859no
23.251.100.x/24/2821859no
23.251.100.x/24/2721859no
23.251.100.x/24/2621859no
23.251.100.x/24/2521859no
23.251.100.x/24/2421859no
23.251.101.x/24/2321859no
23.251.102.x/24/2221859no
23.251.96.x/24/2121859no
23.251.108.x/24/2021859no
23.251.116.x/24/1921859no
23.251.68.x/24/1826827no
23.251.36.x/24/1762468no
23.251.228.x/24/1614618no
23.250.100.x/24/1516509no
23.249.100.x/24/1425645no
23.255.100.x/24/1311878no
23.243.100.x/24/1220001no
23.235.100.x/24/117782no
23.219.100.x/24/1016625no
23.187.100.x/24/9UNROUTEDno
23.123.100.x/24/87018no

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.
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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