Session Report

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| Data: Stats Summary Recent Tests Remediation Results by AS Results by Country Results by Provider |

Summary:

Test run at: 2025-01-03 18:43:07 GMT
Client Prefix (v4): 204.111.8.x/24
Client AS (v4): 4922 (SHENTEL)
IPv4 Probes: 69
Client Prefix (v6): 2606:a800:xx::/40
Client AS (v6): 4922 (SHENTEL)
IPv6 Probes: 68

Outbound spoofing summary (from the client to our server)

Source address type IPv4 IPv6

Private - RFC1918 or ULA blocked ✔ blocked

Routable ✔ blocked ✔ blocked

Largest spoofable neighbor prefix length /16 /32

Spoof status key
received Spoofed packet was received. ✔ Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewritten Spoofed packet was received, but the source address was changed en route.
blocked Spoofed packet was not received, but unspoofed packet was.
unknown Neither spoofed nor unspoofed packet was received.

Outbound spoofing summary (from the client to our server)
Source address type	IPv4	IPv6
Private - RFC1918 or ULA	blocked	✔	blocked
Routable	✔	blocked	✔	blocked
Largest spoofable neighbor prefix length	/16	/32

Spoof status key
received	Spoofed packet was received.	✔	Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewritten	Spoofed packet was received, but the source address was changed en route.
blocked	Spoofed packet was not received, but unspoofed packet was.
unknown	Neither 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 (204.111.8.x/24) can spoof 65535 neighboring addresses (within your /16 prefix)

Spoofed source address (anon) Prefix
Length ASN of spoofed
source address Received

204.111.8.x/24 /31 4922 yes

204.111.8.x/24 /30 4922 yes

204.111.8.x/24 /29 4922 yes

204.111.8.x/24 /28 4922 yes

204.111.8.x/24 /27 4922 yes

204.111.8.x/24 /26 4922 yes

204.111.8.x/24 /25 4922 yes

204.111.8.x/24 /24 4922 yes

204.111.9.x/24 /23 4922 yes

204.111.10.x/24 /22 4922 yes

204.111.12.x/24 /21 4922 yes

204.111.0.x/24 /20 4922 yes

204.111.24.x/24 /19 4922 yes

204.111.40.x/24 /18 4922 yes

204.111.72.x/24 /17 4922 yes

204.111.136.x/24 /16 4922 yes

204.110.8.x/24 /15 27524 no

204.109.8.x/24 /14 UNROUTED no

204.107.8.x/24 /13 396982 no

204.103.8.x/24 /12 UNROUTED no

204.127.8.x/24 /11 UNROUTED no

204.79.8.x/24 /10 UNROUTED no

204.47.8.x/24 /9 14298 no

204.239.8.x/24 /8 22424 no

Meaning of status in Received column:

no Packets spoofed from adjacent netblock were not received, probably due to blocking
yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
204.111.8.x/24	/31	4922	yes
204.111.8.x/24	/30	4922	yes
204.111.8.x/24	/29	4922	yes
204.111.8.x/24	/28	4922	yes
204.111.8.x/24	/27	4922	yes
204.111.8.x/24	/26	4922	yes
204.111.8.x/24	/25	4922	yes
204.111.8.x/24	/24	4922	yes
204.111.9.x/24	/23	4922	yes
204.111.10.x/24	/22	4922	yes
204.111.12.x/24	/21	4922	yes
204.111.0.x/24	/20	4922	yes
204.111.24.x/24	/19	4922	yes
204.111.40.x/24	/18	4922	yes
204.111.72.x/24	/17	4922	yes
204.111.136.x/24	/16	4922	yes
204.110.8.x/24	/15	27524	no
204.109.8.x/24	/14	UNROUTED	no
204.107.8.x/24	/13	396982	no
204.103.8.x/24	/12	UNROUTED	no
204.127.8.x/24	/11	UNROUTED	no
204.79.8.x/24	/10	UNROUTED	no
204.47.8.x/24	/9	14298	no
204.239.8.x/24	/8	22424	no

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 1 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 address Destination Received
2001:48d0:101:501::159 2001:40b0:7500:280::5458:517a no
2001:4978:1fb:6400::d2 2001:40b0:7500:280::5458:517a no
2001:49aa:111:aa00::11 2001:40b0:7500:280::5458:517a no
fd11:1111:1111::1111 2001:40b0:7500:280::5458:517a no
2001:48d0:101:501::159 2001:48d0:101:501::242 no
2001:4978:1fb:6400::d2 2001:48d0:101:501::242 no
2001:49aa:111:aa00::11 2001:48d0:101:501::242 no
fd11:1111:1111::1111 2001:48d0:101:501::242 no
2001:48d0:101:501::159 2001:48d0:101:501::247 no
2001:4978:1fb:6400::d2 2001:48d0:101:501::247 no
2001:49aa:111:aa00::11 2001:48d0:101:501::247 no
fd11:1111:1111::1111 2001:48d0:101:501::247 no
2001:48d0:101:501::159 2001:770:1c:7:225:90ff:fe0c:acb4 no
2001:4978:1fb:6400::d2 2001:770:1c:7:225:90ff:fe0c:acb4 no
2001:49aa:111:aa00::11 2001:770:1c:7:225:90ff:fe0c:acb4 no
fd11:1111:1111::1111 2001:770:1c:7:225:90ff:fe0c:acb4 no

Spoofed source address	Destination	Received
2001:48d0:101:501::159	2001:40b0:7500:280::5458:517a	no
2001:4978:1fb:6400::d2	2001:40b0:7500:280::5458:517a	no
2001:49aa:111:aa00::11	2001:40b0:7500:280::5458:517a	no
fd11:1111:1111::1111	2001:40b0:7500:280::5458:517a	no
2001:48d0:101:501::159	2001:48d0:101:501::242	no
2001:4978:1fb:6400::d2	2001:48d0:101:501::242	no
2001:49aa:111:aa00::11	2001:48d0:101:501::242	no
fd11:1111:1111::1111	2001:48d0:101:501::242	no
2001:48d0:101:501::159	2001:48d0:101:501::247	no
2001:4978:1fb:6400::d2	2001:48d0:101:501::247	no
2001:49aa:111:aa00::11	2001:48d0:101:501::247	no
fd11:1111:1111::1111	2001:48d0:101:501::247	no
2001:48d0:101:501::159	2001:770:1c:7:225:90ff:fe0c:acb4	no
2001:4978:1fb:6400::d2	2001:770:1c:7:225:90ff:fe0c:acb4	no
2001:49aa:111:aa00::11	2001:770:1c:7:225:90ff:fe0c:acb4	no
fd11:1111:1111::1111	2001:770:1c:7:225:90ff:fe0c:acb4	no

IPv6 Adjacent Netblock Testing:

Spoofed source address (anon) Prefix
Length ASN of spoofed
source address Received

2606:a800:xx::/40 /120 4922 yes

2606:a800:xx::/40 /112 4922 yes

2606:a800:xx::/40 /104 4922 yes

2606:a800:xx::/40 /96 4922 yes

2606:a800:xx::/40 /88 4922 yes

2606:a800:xx::/40 /80 4922 yes

2606:a800:xx::/40 /72 4922 yes

2606:a800:xx::/40 /64 4922 yes

2606:a800:xx::/40 /56 4922 yes

2606:a800:xx::/40 /48 4922 yes

2606:a800:xx::/40 /40 4922 yes

2606:a800:80xx::/40 /32 4922 yes

2606:a880:xx::/40 /24 12119 no

2606:2800:xx::/40 /16 UNROUTED no

Meaning of status in Received column:

no Packets spoofed from adjacent netblock were not received, probably due to blocking
yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
2606:a800:xx::/40	/120	4922	yes
2606:a800:xx::/40	/112	4922	yes
2606:a800:xx::/40	/104	4922	yes
2606:a800:xx::/40	/96	4922	yes
2606:a800:xx::/40	/88	4922	yes
2606:a800:xx::/40	/80	4922	yes
2606:a800:xx::/40	/72	4922	yes
2606:a800:xx::/40	/64	4922	yes
2606:a800:xx::/40	/56	4922	yes
2606:a800:xx::/40	/48	4922	yes
2606:a800:xx::/40	/40	4922	yes
2606:a800:80xx::/40	/32	4922	yes
2606:a880:xx::/40	/24	12119	no
2606:2800:xx::/40	/16	UNROUTED	no

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.

no	Packets spoofed from adjacent netblock were not received, probably due to blocking
yes	Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)