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Session Report

Summary:
Test run at: 2022-04-13 22:33:08 GMT
Client Prefix (v4): 138.99.53.x/24
Client AS (v4): 28577
IPv4 Probes: 60
Client Prefix (v6): 2804:d74:c1xx::/40
Client AS (v6): 28577
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 none/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 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 (138.99.53.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
138.99.53.x/24/3128577natblock
138.99.53.x/24/3028577natblock
138.99.53.x/24/2928577natblock
138.99.53.x/24/2828577natblock
138.99.53.x/24/2728577natblock
138.99.53.x/24/2628577natblock
138.99.53.x/24/2528577natblock
138.99.53.x/24/2428577natblock
138.99.52.x/24/2328577natblock
138.99.55.x/24/2228577natblock
138.99.49.x/24/21262427natblock
138.99.61.x/24/20264170natblock
138.99.37.x/24/19263740natblock
138.99.21.x/24/18262883natblock
138.99.117.x/24/1753233natblock
138.99.181.x/24/16262199natblock
138.98.53.x/24/15UNROUTEDnatblock
138.97.53.x/24/14264128natblock
138.103.53.x/24/13703natblock
138.107.53.x/24/122497natblock
138.115.53.x/24/11270natblock
138.67.53.x/24/1036704natblock
138.35.53.x/24/9UNROUTEDnatblock
138.227.53.x/24/8UNROUTEDnatblock

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 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::1592001:48d0:101:501::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::1592001:610:510:115:192:42:115:98yes
2001:4978:1fb:6400::d22001:610:510:115:192:42:115:98no
2001:49aa:111:aa00::112001:610:510:115:192:42:115:98no
fd11:1111:1111::11112001:610:510:115:192:42:115:98no
2001:48d0:101:501::1592001:630:212:225:225:90ff:fe0c:45a6yes
2001:4978:1fb:6400::d22001:630:212:225:225:90ff:fe0c:45a6no
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:48d0:101:501::1592001:770:1c:7:225:90ff:fe0c:acb4yes
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2804:d74:c1xx::/40/12028577yes
2804:d74:c1xx::/40/11228577yes
2804:d74:c1xx::/40/10428577yes
2804:d74:c1xx::/40/9628577yes
2804:d74:c1xx::/40/8828577yes
2804:d74:c1xx::/40/8028577yes
2804:d74:c1xx::/40/7228577yes
2804:d74:c1xx::/40/6428577yes
2804:d74:c1xx::/40/5628577yes
2804:d74:c1xx::/40/4828577yes
2804:d74:c1xx::/40/4028577yes
2804:d74:41xx::/40/3228577yes
2804:df4:c1xx::/40/2452531yes
2804:8d74:c1xx::/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
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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