fmb.la is a composite blocklist for email classification operated by DKIMwl.org. It is not a traditional endpoint antivirus or firewall product, but a reputation intelligence source designed for mail gateways, anti-spam systems, and ISP abuse management. The website states that its lists are assembled and weighted from multiple sources, listing only the “worst actors” and primarily serving as an additional signal for assessing the risk of email sources.
In terms of protection coverage, fmb.la includes Level 1 individual malicious IPs, Level 2 ASN-announced subnets, Level 3 ASNs, Neighbourhoods high-risk network ranges, as well as short.fmb.la for short-link domains, fresh.fmb.la for newly registered domains, and ix.fmb.la for iXhash lookups. Return codes use the common DNSBL-style 127.x.x.x format, making integration with mail systems straightforward. The official guidance also stresses that Level 2 should be scored conservatively, while Level 3 is not recommended for direct blocking and should instead trigger closer review, which is a pragmatic approach.
Deployment is mainly via DNS resolver queries, with manual lookups also available on the website’s Lookup page. On pricing, the text indicates that it is free to use / Free for some: small businesses, non-profits, and individual users may use it for free as long as they comply with the terms, but nameserver queries are limited to 100,000 per day, and IPs or subnets exceeding the limit may be blocked. No enterprise plans, payment methods, or SLA information were found.
The main advantage is its clearly layered signals, covering both IP-level and subnet/ASN-level reputation, along with an automatic removal mechanism for Level 1 entries after 7 days without abuse. Manual delisting requires verification of control over the FCrDNS domain, and the process is relatively clear. The downsides are that the terms explicitly provide no guarantee of completeness, accuracy, or continuous availability; there are substantial restrictions on automated collection, redistribution, and commercial use; and there is no disclosed information on compliance certifications, alerts, reporting, SIEM/API integrations, or other enterprise-grade capabilities.
fmb.la is suitable for mail administrators, small organizations, and anti-spam systems that need low-cost DNSBL signals. It should not be used as the sole basis for blocking, especially for Level 2/3 entries, which are better treated as scoring factors. The text does not provide information on accessibility from mainland China, so its status is unknown. If DNS or network reachability issues occur, alternatives such as Spamhaus, SURBL, URIBL, Abusix, or commercial email security gateways may be worth considering.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on fmb.la official site.
fmb.la is an Unknown Cybersecurity provider. TG4G tracks its product information, an overall rating of 5.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach fmb.la directly.