Session Report

Summary:

Test run at: 2025-03-04 03:59:42 GMT
Client Prefix (v4): 163.47.36.x/24
Client AS (v4): 63961 (BDREN-UGC-AS-AP)
IPv4 Probes: 162
Client Prefix (v6): 2402:f500:11xx::/40
Client AS (v6): 63961 (BDREN-UGC-AS-AP)
IPv6 Probes: 56

Outbound spoofing summary (from the client to our server)
Source address type	IPv4		IPv6
Private - RFC1918 or ULA	unknown		unknown
Routable	unknown		unknown
Largest spoofable neighbor prefix length	none		none

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.

Warnings:

• ⚠️ The spoofer client was unable to send spoofed headers due to an operating system restriction.

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

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
163.47.36.x/24	/31	63961	sendto
163.47.36.x/24	/30	63961	sendto
163.47.36.x/24	/29	63961	sendto
163.47.36.x/24	/28	63961	sendto
163.47.36.x/24	/27	63961	sendto
163.47.36.x/24	/26	63961	sendto
163.47.36.x/24	/25	63961	sendto
163.47.36.x/24	/24	63961	sendto
163.47.37.x/24	/23	63961	sendto
163.47.38.x/24	/22	63961	sendto
163.47.32.x/24	/21	23688	sendto
163.47.44.x/24	/20	133891	sendto
163.47.52.x/24	/19	45780	sendto
163.47.4.x/24	/18	56282	sendto
163.47.100.x/24	/17	58580	sendto
163.47.164.x/24	/16	133192	sendto
163.46.36.x/24	/15	18126	sendto
163.45.36.x/24	/14	131930	sendto
163.43.36.x/24	/13	9370	sendto
163.39.36.x/24	/12	UNROUTED	sendto
163.63.36.x/24	/11	UNROUTED	sendto
163.15.36.x/24	/10	1659	sendto
163.111.36.x/24	/9	UNROUTED	sendto
163.175.36.x/24	/8	UNROUTED	sendto

Meaning of status in Received column:

sendto

The spoofer client was unable to send spoofed headers due to an operating system restriction.

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 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
2001:48d0:101:501::159	2607:8400:2880:4::80df:9d0d	no
2001:4978:1fb:6400::d2	2607:8400:2880:4::80df:9d0d	no
2001:49aa:111:aa00::11	2607:8400:2880:4::80df:9d0d	no
fd11:1111:1111::1111	2607:8400:2880:4::80df:9d0d	no
2001:48d0:101:501::159	2607:f278:2:13:da3a:ddff:fe30:ce14	no
2001:4978:1fb:6400::d2	2607:f278:2:13:da3a:ddff:fe30:ce14	no
2001:49aa:111:aa00::11	2607:f278:2:13:da3a:ddff:fe30:ce14	no
fd11:1111:1111::1111	2607:f278:2:13:da3a:ddff:fe30:ce14	no

IPv6 Adjacent Netblock Testing:

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
2402:f500:11xx::/40	/120	63961	sendto
2402:f500:11xx::/40	/112	63961	sendto
2402:f500:11xx::/40	/104	63961	sendto
2402:f500:11xx::/40	/96	63961	sendto
2402:f500:11xx::/40	/88	63961	sendto
2402:f500:11xx::/40	/80	63961	sendto
2402:f500:11xx::/40	/72	63961	sendto
2402:f500:11xx::/40	/64	63961	sendto
2402:f500:11xx::/40	/56	63961	sendto
2402:f500:11xx::/40	/48	63961	sendto
2402:f500:11xx::/40	/40	63961	sendto
2402:f500:91xx::/40	/32	63961	sendto
2402:f580:11xx::/40	/24	UNROUTED	sendto
2402:7500:11xx::/40	/16	UNROUTED	sendto

Meaning of status in Received column:

sendto

The spoofer client was unable to send spoofed headers due to an operating system restriction.

Summary:

The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.

Feedback:

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