Rawstream DNS Filtering vs SecurityZones SURBL BV: Side-by-Side Comparison (2026)

Rawstream DNS Filtering

Startups and SMBs without dedicated security ops will get immediate value from Rawstream DNS Filtering because it blocks threats at the DNS layer with zero endpoint agents to manage. The unlimited block and allow lists, native dynamic IP support, and real-time reporting give you visibility and control without the operational overhead of traditional gateway appliances. Skip this if you need SIEM integration or advanced threat hunting; Rawstream is a point solution that excels at what it does, not a detection platform.

SecurityZones SURBL BV

Mid-market and enterprise security teams filtering high-volume email and web traffic will see immediate ROI from SecurityZones SURBL BV because its feeds update every 1-2 minutes, catching newly registered phishing and botnet domains faster than most competitors can refresh. The FRESH feed specifically targets domains less than 72 hours old, where traditional blocklists have gaps, and native DNS RPZ and SIEM integrations mean you're not bolting on a separate lookup layer. Skip this if you need post-breach forensics or incident response context; SURBL BV is built for continuous monitoring at the gateway, not for characterizing compromises after they've landed.