Blacklist Check
Check if your domain or IP address is listed on spam blacklists (RBLs). We query 10+ major blacklist providers including Spamhaus, Barracuda, and SpamCop.
Tip: Enter a domain name or IPv4 address. Domains will be resolved to their A record.
Blacklists We Check
We query these major Real-time Blackhole Lists (RBLs)
Spamhaus ZEN
zen.spamhaus.org
Barracuda
b.barracudacentral.org
SpamCop
bl.spamcop.net
SORBS
dnsbl.sorbs.net
CBL
cbl.abuseat.org
+ 5 More
Other major RBLs
What If I'm Blacklisted?
1. Identify the Cause
Check your server for compromised accounts, malware, or open relays that may be sending spam.
2. Fix the Issue
Secure compromised accounts, remove malware, and implement proper email authentication (SPF, DKIM, DMARC).
3. Request Delisting
Contact each blacklist provider and follow their delisting process. Most have self-service removal forms.
4. Monitor Regularly
Set up regular checks to catch blacklisting early and maintain your sender reputation.
