Blacklist in detail:

This blacklist is marked as "shut down" and non-operational as of 2012-04-29. BLalert won't be monitoring this DNSBL after 2012-04-29. More details may be found in the description.

"Fiveten" Blacklist IPv4

The "Fiveten" Blacklist ( was a combination anti-spam blacklist run by Carl Byington, publishing under the name of "510 Software Group." This blacklist has been available since at least February, 2001, and it appears to have been retired as of April 2012.

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