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Session Report

Summary:
Test run at: 2024-07-31 07:00:05 GMT
Client Prefix (v4): 103.96.41.x/24
Client AS (v4): 138311 (LIMERICK-AS-IN)
IPv4 Probes: 69
Client Prefix (v6): 2405:3440:xx::/40
Client AS (v6): 138311 (LIMERICK-AS-IN)
IPv6 Probes: 68
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedreceived
Routable receivedreceived
Largest spoofable neighbor prefix length /11/16
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 (103.96.41.x/24) can spoof 2097151 neighboring addresses (within your /11 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
103.96.41.x/24/31138311yes
103.96.41.x/24/30138311yes
103.96.41.x/24/29138311yes
103.96.41.x/24/28138311yes
103.96.41.x/24/27138311yes
103.96.41.x/24/26138311yes
103.96.41.x/24/25138311yes
103.96.41.x/24/24138311yes
103.96.40.x/24/23138311yes
103.96.43.x/24/22135744yes
103.96.45.x/24/21134021yes
103.96.33.x/24/20136794yes
103.96.57.x/24/1932880yes
103.96.9.x/24/18131567natblock
103.96.105.x/24/17134153yes
103.96.169.x/24/16UNROUTEDnatblock
103.97.41.x/24/15UNROUTEDnatblock
103.98.41.x/24/14UNROUTEDnatblock
103.100.41.x/24/13UNROUTEDnatblock
103.104.41.x/24/12UNROUTEDnatblock
103.112.41.x/24/11150602yes
103.64.41.x/24/10UNROUTEDnatblock
103.32.41.x/24/9UNROUTEDnatblock
103.224.41.x/24/8UNROUTEDnatblock

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
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 able to spoof routable, non-adjacent source addresses through the first 10 IP hop(s).
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::1592001:200:e000:2:225:90ff:fe0c:4684yes
2001:4978:1fb:6400::d22001:200:e000:2:225:90ff:fe0c:4684yes
2001:49aa:111:aa00::112001:200:e000:2:225:90ff:fe0c:4684yes
fd11:1111:1111::11112001:200:e000:2:225:90ff:fe0c:4684no
2001:48d0:101:501::1592001:48d0:101:501::242yes
2001:4978:1fb:6400::d22001:48d0:101:501::242yes
2001:49aa:111:aa00::112001:48d0:101:501::242no
fd11:1111:1111::11112001:48d0:101:501::242yes
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::247yes
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::1592001:638:902:2000:ba27:ebff:fe86:2c51yes
2001:4978:1fb:6400::d22001:638:902:2000:ba27:ebff:fe86:2c51yes
2001:49aa:111:aa00::112001:638:902:2000:ba27:ebff:fe86:2c51yes
fd11:1111:1111::11112001:638:902:2000:ba27:ebff:fe86:2c51no
2001:48d0:101:501::1592001:770:1c:7:225:90ff:fe0c:acb4yes
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4yes
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4yes
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
2001:48d0:101:501::1592607:8400:2880:4::80df:9d0dyes
2001:4978:1fb:6400::d22607:8400:2880:4::80df:9d0dno
2001:49aa:111:aa00::112607:8400:2880:4::80df:9d0dyes
fd11:1111:1111::11112607:8400:2880:4::80df:9d0dno
2001:48d0:101:501::1592607:f278:2:13:da3a:ddff:fe30:ce14yes
2001:4978:1fb:6400::d22607:f278:2:13:da3a:ddff:fe30:ce14no
2001:49aa:111:aa00::112607:f278:2:13:da3a:ddff:fe30:ce14yes
fd11:1111:1111::11112607:f278:2:13:da3a:ddff:fe30:ce14no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2405:3440:xx::/40/120138311yes
2405:3440:xx::/40/112138311yes
2405:3440:xx::/40/104138311yes
2405:3440:xx::/40/96138311yes
2405:3440:xx::/40/88138311yes
2405:3440:xx::/40/80138311yes
2405:3440:xx::/40/72138311yes
2405:3440:xx::/40/64138311yes
2405:3440:xx::/40/56138311yes
2405:3440:xx::/40/48138311yes
2405:3440:xx::/40/40UNROUTEDno
2405:3440:80xx::/40/32UNROUTEDyes
2405:34c0:xx::/40/24UNROUTEDno
2405:b440:xx::/40/16UNROUTEDyes

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)
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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