Blacklist Check

Search a domain or IP address to see if the entry is listed in RPZ zones maintained by SWITCH as part of the SWITCH DNS Firewall service (Optional third party zones of the SWITCH DNS Firewall service are not included): 

Please note

  • Only characters a-z, 0-9, dot '.', colon ':', dash '-' and underscore '_' are allowed
  • Please enter IP addresses in normal forward order such as or 2001:620:0:ff::5c
  • Use the SURBL Blacklist lookup ( to check if an entry is listed in the SURBL RPZ zones

Our offer

– SWITCH DNS Firewall no-obligation 60-day trial
– Consulting services for DNS RPZ implementation
– Further information on the SWITCH DNS Firewall