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: 2026-02-23 11:13:46 GMT
Client Prefix (v4): 109.111.55.x/24
Client AS (v4): 216075 (Zenyx)
IPv4 Probes: 162

Outbound spoofing summary (from the client to our server)

Source address type IPv4

Private - RFC1918 unknown

Routable unknown

Largest spoofable neighbor prefix length 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.

Outbound spoofing summary (from the client to our server)
Source address type	IPv4
Private - RFC1918	unknown
Routable	unknown
Largest spoofable neighbor prefix length	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:

⚠️ Your host was unable to source even non-spoofed IPv4 UDP traffic to our servers. A firewall, router or other middlebox is preventing our testing. To test your provider's network further, you must remove the firewall or router and connect directly.

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

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

109.111.55.x/24 /31 216075 no

109.111.55.x/24 /30 216075 no

109.111.55.x/24 /29 216075 no

109.111.55.x/24 /28 216075 no

109.111.55.x/24 /27 216075 no

109.111.55.x/24 /26 216075 no

109.111.55.x/24 /25 216075 no

109.111.55.x/24 /24 216075 no

109.111.54.x/24 /23 216075 no

109.111.53.x/24 /22 141968 no

109.111.51.x/24 /21 UNROUTED no

109.111.63.x/24 /20 399989 no

109.111.39.x/24 /19 199737 no

109.111.23.x/24 /18 40993 no

109.111.119.x/24 /17 6752 no

109.111.183.x/24 /16 34757 no

109.110.55.x/24 /15 196949 no

109.109.55.x/24 /14 39308 no

109.107.55.x/24 /13 395793 no

109.103.55.x/24 /12 9050 no

109.127.55.x/24 /11 50274 no

109.79.55.x/24 /10 15502 no

109.47.55.x/24 /9 3209 no

109.239.55.x/24 /8 34011 no

Meaning of status in Received column:

no Packets spoofed from adjacent netblock were not received, probably due to blocking

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
109.111.55.x/24	/31	216075	no
109.111.55.x/24	/30	216075	no
109.111.55.x/24	/29	216075	no
109.111.55.x/24	/28	216075	no
109.111.55.x/24	/27	216075	no
109.111.55.x/24	/26	216075	no
109.111.55.x/24	/25	216075	no
109.111.55.x/24	/24	216075	no
109.111.54.x/24	/23	216075	no
109.111.53.x/24	/22	141968	no
109.111.51.x/24	/21	UNROUTED	no
109.111.63.x/24	/20	399989	no
109.111.39.x/24	/19	199737	no
109.111.23.x/24	/18	40993	no
109.111.119.x/24	/17	6752	no
109.111.183.x/24	/16	34757	no
109.110.55.x/24	/15	196949	no
109.109.55.x/24	/14	39308	no
109.107.55.x/24	/13	395793	no
109.103.55.x/24	/12	9050	no
109.127.55.x/24	/11	50274	no
109.79.55.x/24	/10	15502	no
109.47.55.x/24	/9	3209	no
109.239.55.x/24	/8	34011	no

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.

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.