Is there a RHSBL for "parked domains"?

My users make a lot of typos in their recipient email addresses.
Is there an easy way (i.e. a RHSBL) for "parked domains"?

Or is there another "easy way" of detecting parked domains?
Things that come to mind:

* hostname resolve to but a few IP addresses
* NS records for domain point to special "parking DNS servers"
* other stuff Victor has found out, but I haven't

-- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebrandt_at_charite.de | http://www.charite.de

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