| 1 | http://mxtoolbox.com/blacklists.aspx | 3,381 | Oct-15 |
| 2 | http://urlblacklist.com/ | 6,71,857 | Oct-15 |
| 3 | http://multirbl.valli.org/ | 60,800 | Oct-15 |
| 4 | https://sitecheck.sucuri.net/ | 10,238 | Oct-15 |
| 5 | https://www.whatismyip.com/blacklist-check/ | 6,522 | Oct-15 |
| 6 | https://www.ultratools.com/tools/spamDBLookup | 24,927 | Oct-15 |
| 7 | http://mainehost.com/website-malware-blacklist-checker/ | 4,65,219 | Oct-15 |
| 8 | http://blacklistalert.org/ | 1,58,820 | Oct-15 |
| 9 | http://websitepulse.com/help/testtools.dbl-test.html | 1,34,170 | Oct-15 |
| 10 | http://www.surbl.org/surbl-analysis | 33,99,30 | Oct-15 |
| 11 | http://www.anti-abuse.org/multi-rbl-check/ | 19,43,62 | Oct-15 |