V 4 B L . o r g
The SMTP IPv4 DNS Block List.
Current Block List IP Count: 448 Million
WHAT WE DO:
We operate the largest SMTP IPv4 DNS Block List Service. (Read our Acceptable Use Policy here)
We provide two primary publicly available services:
» 1. The V4BL/FULL Block List - which is a commercial/pay-for-use service.
» 2. The V4BL/FREE Block List - which continues to be completely FREE and OPEN for public use at your own risk and discretion.
It is available to any IPv4 capable DNS client and now holds 86.5 M IPs.
» Is my email server listed? (How can I get my IP delisted)
» List Usage: Acceptable Use Policy/Abuses/Misuses. (How can I use this list?)
» E-mail server basic setup steps
» Site/Service Status, Notifications & Changes log
» Some typical reasons we list IPs.
» Why V4BL?
Over the last 30 days: V4BL Block List has been updated by one IP every 0.624 seconds.
Over the past year the list has grown by 306,836,674 IPs. Oldest IP: 1352 days listed.
At any given moment, there are more than 35M new IPs queued awaiting basic compliancy checks.
See our historical results/progress here.
"Someone had to defend the Internet."