RBL Test Page

Testing IP: 8.8.8.8
Reversed IP: 8.8.8.8

RBL Query Results:

zen.spamhaus.org: CLEAN (Query blocked by RBL) (1638ms)
Response IP: 127.255.255.254

Show raw output

Server:		9.9.9.9
Address:	9.9.9.9#53

Non-authoritative answer:
Name:	8.8.8.8.zen.spamhaus.org
Address: 127.255.255.254

sbl.spamhaus.org: CLEAN (Query blocked by RBL) (126ms)
Response IP: 127.255.255.254

Show raw output

Server:		9.9.9.9
Address:	9.9.9.9#53

Non-authoritative answer:
Name:	8.8.8.8.sbl.spamhaus.org
Address: 127.255.255.254

bl.spamcop.net: ERROR - No response (125ms)

Show raw output

Server:		9.9.9.9
Address:	9.9.9.9#53

** server can't find 8.8.8.8.bl.spamcop.net: NXDOMAIN

b.barracudacentral.org: ERROR - No response (282ms)

Show raw output

Server:		9.9.9.9
Address:	9.9.9.9#53

** server can't find 8.8.8.8.b.barracudacentral.org: NXDOMAIN

How RBL works:
• Query: 8.8.8.8.rbl.example.com
• If returns 127.x.x.x → IP is LISTED
• If returns NXDOMAIN → IP is CLEAN
• Using DNS Server: 9.9.9.9 (Quad9)