Description Usage Details Note References
Retrieves the Spamhaus ASN DROP List (ASN-DROP)
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ASN-DROP contains a list of Autonomous System Numbers controlled by spammers or cyber criminals, as well as "hijacked" ASNs. ASN-DROP can be used to filter BGP routes which are being used for malicious purposes.
This function is "memoised" because the DROP list changes quite slowly.
There is no need to update cached data more than once per hour,
in fact once per day is more than enough in most cases. Automated downloads
must be at least one hour apart. Excessive downloads may result in your IP
being firewalled from the Spamhaus website.
If you are using this from
a long-running R session and need to fetch the list, use the clear_drops()
function to clear the cache of all "DROP" get functions.
https://www.spamhaus.org/drop/; https://www.spamhaus.org/faq/section/
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