| DNS Black-List allow to verify if a domain name is not considered as source of SPAM. This service is a way to filter SPAM mail by blocking known and identified sources. |  |
| Web | DNSbl maintened (FQDN) |
|---|---|
| dsbl.org | list.dsbl.org multihop.dsbl.org |
| dsbl.org | dnsbl.njabl.org |
| www.ordb.org | relays.ordb.org |
| www.blitzed.org/opm/ | opm.blitzed.org |
| www.dnsbl.sorbs.net | spews.dnsbl.sorbs.net zombie.dnsbl.sorbs.net |
| spamhaus.org/sbl/ | sbl.spamhaus.org |
| www.dnsbl.us.sorbs.net | dnsbl.sorbs.net |
You can also check openrbl.org for a per country list of mirrors.
For more information about DNSBL you can refer to www.scconsult.com/bill/dnsblhelp.html.