Logo

Session Report

Summary:
Test run at: 2026-03-16 13:19:12 GMT
Client Prefix (v4): 185.182.193.x/24
Client AS (v4): 49981 (WorldStream)
IPv4 Probes: 162
Client Prefix (v6): 2a00:7c80:xx::/40
Client AS (v6): 49981 (WorldStream)
IPv6 Probes: 180
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length nonenone
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 (185.182.193.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
185.182.193.x/24/3149981natblock
185.182.193.x/24/3049981natblock
185.182.193.x/24/2949981natblock
185.182.193.x/24/2849981natblock
185.182.193.x/24/2749981natblock
185.182.193.x/24/2649981natblock
185.182.193.x/24/2549981natblock
185.182.193.x/24/2449981natblock
185.182.192.x/24/2349981natblock
185.182.195.x/24/2249981natblock
185.182.197.x/24/2121309natblock
185.182.201.x/24/2021267natblock
185.182.209.x/24/1950877natblock
185.182.225.x/24/185582natblock
185.182.129.x/24/17213541natblock
185.182.65.x/24/1633842natblock
185.183.193.x/24/1513030natblock
185.180.193.x/24/14137409natblock
185.178.193.x/24/13207143natblock
185.190.193.x/24/12206266natblock
185.166.193.x/24/1125435natblock
185.150.193.x/24/1016145natblock
185.246.193.x/24/9204564natblock
185.54.193.x/24/812946natblock

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
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2a00:7c80:xx::/40/12049981natblock
2a00:7c80:xx::/40/11249981natblock
2a00:7c80:xx::/40/10449981natblock
2a00:7c80:xx::/40/9649981natblock
2a00:7c80:xx::/40/8849981natblock
2a00:7c80:xx::/40/8049981natblock
2a00:7c80:xx::/40/7249981natblock
2a00:7c80:xx::/40/6449981natblock
2a00:7c80:xx::/40/5649981natblock
2a00:7c80:xx::/40/4849981natblock
2a00:7c80:xx::/40/4049981natblock
2a00:7c80:80xx::/40/3249981natblock
2a00:7c00:xx::/40/2441783natblock
2a00:fc80:xx::/40/1660781natblock

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.
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.
Last Modified