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Session Report

Summary:
Test run at: 2022-09-24 03:37:44 GMT
Client Prefix (v4): 72.219.85.x/24
Client AS (v4): 22773 (ASN-CXA-ALL-CCI-22773-RDC)
IPv4 Probes: 60
Client Prefix (v6): 2600:8802:dxx::/40
Client AS (v6): 22773 (ASN-CXA-ALL-CCI-22773-RDC)
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownunknown
Routable unknownunknown
Largest spoofable neighbor prefix length nonenone
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.

Warnings:

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 (72.219.85.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
72.219.85.x/24/3122773natblock
72.219.85.x/24/3022773natblock
72.219.85.x/24/2922773natblock
72.219.85.x/24/2822773natblock
72.219.85.x/24/2722773natblock
72.219.85.x/24/2622773natblock
72.219.85.x/24/2522773natblock
72.219.85.x/24/2422773natblock
72.219.84.x/24/2322773natblock
72.219.87.x/24/2222773natblock
72.219.81.x/24/2122773natblock
72.219.93.x/24/2022773natblock
72.219.69.x/24/1922773natblock
72.219.117.x/24/1822773natblock
72.219.21.x/24/1722773natblock
72.219.213.x/24/1622773natblock
72.218.85.x/24/1522773natblock
72.217.85.x/24/1422773natblock
72.223.85.x/24/1322773natblock
72.211.85.x/24/1222773natblock
72.203.85.x/24/1122773natblock
72.251.85.x/24/107029natblock
72.155.85.x/24/98075natblock
72.91.85.x/24/85650natblock

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 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2600:8802:dxx::/40/12022773no
2600:8802:dxx::/40/11222773no
2600:8802:dxx::/40/10422773no
2600:8802:dxx::/40/9622773no
2600:8802:dxx::/40/8822773no
2600:8802:dxx::/40/8022773no
2600:8802:dxx::/40/7222773no
2600:8802:dxx::/40/6422773no
2600:8802:dxx::/40/5622773no
2600:8802:dxx::/40/4822773no
2600:8802:dxx::/40/4022773no
2600:8802:8dxx::/40/3222773no
2600:8882:dxx::/40/24UNROUTEDno
2600:802:dxx::/40/16701no

Meaning of status in Received column:

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