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Session Report

Summary:
Test run at: 2021-08-11 16:37:24 GMT
Client Prefix (v4): 209.133.223.x/24
Client AS (v4): 29802 (HVC-AS)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /24
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 Adjacent Netblock Testing:

Your host (209.133.223.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
209.133.223.x/24/3129802yes
209.133.223.x/24/3029802yes
209.133.223.x/24/2929802yes
209.133.223.x/24/2829802yes
209.133.223.x/24/2729802yes
209.133.223.x/24/2629802yes
209.133.223.x/24/2529802yes
209.133.223.x/24/2429802yes
209.133.222.x/24/2329802no
209.133.221.x/24/2229802no
209.133.219.x/24/2129802no
209.133.215.x/24/2029802no
209.133.207.x/24/1929802no
209.133.255.x/24/1827357no
209.133.159.x/24/172939no
209.133.95.x/24/166461no
209.132.223.x/24/157296no
209.135.223.x/24/14393423no
209.129.223.x/24/132152no
209.141.223.x/24/1246792no
209.149.223.x/24/116389no
209.165.223.x/24/103925no
209.197.223.x/24/913445no
209.5.223.x/24/83602no

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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