dnsbl

This tool can be used to query the AHBL database for domain names or IP addresses. If information is found in our database, you will be presented with the reason, as well as instructions on how to remove the listing. Please note that in some cases, listings can not be removed.

Valid lookups include:

• IP Addresses (ie: 127.0.0.1)
• Domain names (ie: ahbl.org)

Invalid lookups include:

• E-Mail addresses
• CIDR/Netmask (ie: 127.0.0.0/24)

Please note that accesses to this tool are logged and reviewed. Abuse or automated querying will not be tolerated and source IP banned from accessing the tool.

AHBL Advanced Query Tool v4.1

To help you understand why an IP is listed in our DNSbl database, we have established the following policies:

Open Relay (Response: 127.0.0.2)
This IP address is listed because it is an open SMTP relay - either a single relay, or a multi-stage relay.  An open SMTP relay means that a third party can send e-mail through the server on that IP address without authorization (to spam, for example).

Open Proxy (Response: 127.0.0.3)

DNSBL Usage

• DNSbl - Our most popular DNS based query list - Code Meanings
• IRCbl - A special list for people who need a DNSbl for IRC servers
• RHSbl - A domain based DNSbl, excellent for use with SpamAssassin

FAQ