english Lookup within ix.dnsbl.manitu.net
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The IP address 39.170.120.21 is not listed here.
On http://zy0.de/q/39.170.120.21 you can check other major blacklists for the IP address and see email headers of recently received spam if available.
Further information can be found at http://ix.de/nixspam/dnsbl_en/.
