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WordPress plugin
TSI Visitor Blocker
TSI Visitor Blocker protects your WordPress site from unwanted visitors, spam, and brute-force attacks. Who Is This For? Website owners who want to stop spam form submissions E-commerce stores that want to block fraudulent email addresses Agencies managing multiple sites that need consistent blockin
PricingFree downloadThe WordPress.org download is free. Pro versions, add-ons or external services may cost extra.
CompatibilityRequires WordPress 5.6.
SourceWordPress plugins · Nov 15, 2026
01 / Source details
TSI Visitor Blocker protects your WordPress site from unwanted visitors, spam, and brute-force attacks.
Who Is This For?
- Website owners who want to stop spam form submissions
- E-commerce stores that want to block fraudulent email addresses
- Agencies managing multiple sites that need consistent blocking rules
- Anyone dealing with spam comments, fake registrations, and bot traffic
Key Features
IP & Subnet Blocking
- Block specific IP addresses (IPv4 and IPv6 support)
- Block entire subnets using CIDR notation (e.g., 192.168.1.0/24)
- Useful for blocking entire hosting ranges from known spam providers
Country Blocking
- Block visitors from specific countries using two-letter ISO codes
- Uses ip-api.com for geolocation (cached for 24 hours for performance)
Email & Domain Blocking
- Block specific email addresses (e.g., spammer@example.com)
- Block entire email domains (e.g., tempmail.com)
- Blocks emails in contact forms, registration forms, and comments
Bot & User-Agent Blocking
- Block known bad bots by user-agent string
- Protects your site from scrapers and crawlers
Rate Limiting
- Limit the number of POST requests per IP address
- Configurable max requests and time window
- Prevents brute-force attacks and automated form submissions
AbuseIPDB Integration
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