ReferrerBlock 2025.11.26

.NET 9.0 This package targets .NET 9.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package ReferrerBlock --version 2025.11.26
                    


                    

                
NuGet\Install-Package ReferrerBlock -Version 2025.11.26
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="ReferrerBlock" Version="2025.11.26" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="ReferrerBlock" Version="2025.11.26" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="ReferrerBlock" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add ReferrerBlock --version 2025.11.26
                    


                    

                
#r "nuget: ReferrerBlock, 2025.11.26"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package ReferrerBlock@2025.11.26
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=ReferrerBlock&version=2025.11.26
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=ReferrerBlock&version=2025.11.26
                    


                            Install as a Cake Tool

ReferrerBlock

ReferrerBlock

NuGet BlazorWinOld Nuget Package License: MIT

ReferrerBlock middleware to block referrer spam and malicious traffic.

⚙️ Usage

var builder = WebApplication.CreateBuilder(args); var app = builder.Build();

app.UseReferrerBlock();

app.Run();

The middleware uses default blocking rules. Optionally, you can customize them:

app.UseReferrerBlock(options => { 
    options.BlockedDomains.Add("spam-site.com"); 
    options.BlockedTLDs.Add(".suspicious"); 
    options.BlockedPatterns.Add("malicious"); 
    });

📝 Examples

Disable default TLD blocking

app.UseReferrerBlock(options => 
{ 
    options.BlockedTLDs.Clear(); // Remove all default TLDs
    options.BlockedDomains.Add("spam-site.com"); 
});

Use only custom rules

app.UseReferrerBlock(options => 
{ 
    // Clear all default rules
    options.BlockedTLDs.Clear();
    options.BlockedDomains.Clear();
    options.BlockedPatterns.Clear();
    
    // Add only your custom rules
    options.BlockedDomains.Add("spam-site.com");
    options.BlockedDomains.Add("malicious-domain.com");
    options.BlockedTLDs.Add(".scam");
    options.BlockedPatterns.Add("suspicious");
});

Combine default rules with custom ones

app.UseReferrerBlock(options => 
{ 
    // Keep default rules and add custom ones
    options.BlockedDomains.Add("spam-site.com"); 
    options.BlockedTLDs.Add(".suspicious"); 
    options.BlockedPatterns.Add("malicious"); 
});

📊 Blocked Domains

See BLOCKED_DOMAINS.md for the complete list of blocked domains, TLDs, and patterns with their addition history.

Product Compatible and additional computed target framework versions.
.NET net9.0 is compatible.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
2026.4.12 84 4/12/2026
2026.3.21 130 3/21/2026
2026.2.28 130 2/28/2026
2026.2.15 110 2/15/2026
2026.2.10 117 2/10/2026
2026.2.8 107 2/8/2026
2026.2.6 102 2/6/2026
2026.2.5 109 2/5/2026
2026.2.1 112 2/1/2026
2026.1.26 123 1/26/2026
2026.1.22 110 1/22/2026
2026.1.16 109 1/16/2026
2026.1.14 112 1/14/2026
2026.1.11 116 1/11/2026
2026.1.8 118 1/8/2026
2026.1.5 122 1/5/2026
2026.1.1 125 1/1/2026
2025.12.31 115 12/30/2025
2025.12.30 124 12/30/2025
2025.11.26 205 11/26/2025
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Initial release with referrer blocking capabilities.