Blacklist in detail:

Leadmon.Net's SpamGuard Listings (LNSG) IPv4

This is a personel list maintained by The list classifies IPs into 6 different types. These types are Dial-Up/Cable/DSL IP Addresses, Individual SPAM Sources, Bulk mailers, Single-Stage Open Relays, Multi-Stage Open Relays and finally SpamBlock Sites. It looks like it has stoped listing Dial-Up/Cable/DSL IP Addresses.
Last Accessed
2020-09-19 18:05 (UTC) 
Last Checked
When we last checked 2 hours, 59 minutes ago it was working.
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History for (Last 10 Days)

We keep some statistics on blacklists. Below is the graph for We test blacklists by asking them to respond to known IP's that are blacklisted and known IP's that can't be blacklisted. Not every blacklist has such IP's, we test them with what is possible. We keep if we get any response or error messages and the response duration. Lower response times are better. These statistics may be useful for email server administrators to pick which blacklist to use.

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