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Session Report

Summary:
Test run at: 2020-05-12 06:53:45 GMT
Client Prefix (v4): 185.30.233.x/24
Client AS (v4): 174 (COGENT-174)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length none
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 (185.30.233.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.30.233.x/24/31174no
185.30.233.x/24/30174no
185.30.233.x/24/29174no
185.30.233.x/24/28174no
185.30.233.x/24/27174no
185.30.233.x/24/26174no
185.30.233.x/24/25174no
185.30.233.x/24/24174no
185.30.232.x/24/2360781no
185.30.235.x/24/22UNROUTEDno
185.30.237.x/24/218315no
185.30.225.x/24/2060717no
185.30.249.x/24/19205579no
185.30.201.x/24/1860860no
185.30.169.x/24/17206178no
185.30.105.x/24/1660465no
185.31.233.x/24/15UNROUTEDno
185.28.233.x/24/1439605no
185.26.233.x/24/1356503no
185.22.233.x/24/12203226no
185.14.233.x/24/11199490no
185.62.233.x/24/106736no
185.94.233.x/24/9UNROUTEDno
185.158.233.x/24/8207157no

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking

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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