Blog - NullPrivate Tech Sharing & Product Updates on NullPrivate

NingPing Ad-Block: DNS-Based Intelligent Ad-Filtering Solution

Mon, 18 Aug 2025 10:00:00 +0800

In today’s digital era, advertising has become an integral part of the internet ecosystem, yet excessive ads not only degrade user experience but also pose privacy risks. NingPing (NullPrivate), a DNS service focused on privacy protection, adopts DNS-filtering technology similar to AdGuard Home to provide users with an effective ad-blocking solution.

How NingPing Ad-Block Works

NingPing’s ad-blocking relies on DNS (Domain Name System) filtering. The workflow is as follows:

flowchart TB
 A[User Device] --> B{DNS Query}
 B --> C[NingPing DNS Server]
 C --> D[Query Domain Database]
 D --> E{Ad or Tracker Domain?}
 E -->|Yes| F[Return Null or Loopback]
 E -->|No| G[Return Correct IP]
 F --> H[Block Ad Load]
 G --> I[Normal Site Access]

DNS Request Monitoring

When your device tries to visit a website, it first queries the DNS server for the domain’s IP address. Acting as your primary DNS server, NingPing receives and analyzes these queries.

Technical Comparison of DoH vs DoT

Wed, 11 Feb 2026 00:00:00 +0800

DNS over HTTPS (DoH) and DNS over TLS (DoT) are two common encrypted DNS transmission methods that implement secure DNS queries through different protocol stacks. DoT is standardized by RFC 7858, while DoH is standardized by DNS Queries over HTTPS (DoH). To understand the fundamental differences between these two technologies, we must analyze them from the perspective of network protocol hierarchy.

Network Protocol Hierarchy

Modern network protocol stacks adopt a layered design, with each layer providing distinct functionalities. DNS, as an application-layer protocol, isn’t bound to any specific transport method and can operate over various carrier protocols.

DNS Privacy Protection and User Profiling Mitigation Strategies

Thu, 09 Oct 2025 22:00:00 +0000

DNS Privacy Protection and User Profiling Mitigation Strategies

Audience: Engineers/Operators/Security Professionals concerned with network privacy and data governance
Keywords: Stub resolver, Recursive resolution, Authoritative server, QNAME minimization, ECS, DNSSEC, DoT/DoH/DoQ

Background and Problem Overview

In the digital age, users’ online behavioral data has become crucial for enterprises to construct user profiles. As a core component of internet infrastructure, the Domain Name System (DNS) performs the critical task of converting human-readable domain names into machine-readable IP addresses during daily network activities. However, traditional DNS queries are typically transmitted in plaintext over UDP port 53, making users’ browsing history, application usage patterns, and other sensitive information vulnerable to collection and analysis by network operators, ISPs, and various intermediaries.

Deep Dive: NullPrivate DNS Proxy – Bypass Restrictions and Safeguard Privacy

Mon, 25 Aug 2025 19:27:18 +0800

🌐 DNS Proxy Deep Dive

In today’s complex network landscape, traditional DNS services often hit numerous roadblocks. NullPrivate DNS now fully supports upstream DNS proxying, giving users a more flexible and secure browsing experience.

Why You Need DNS Proxying

In some environments—corporate networks, campus networks, or region-specific setups—direct access to upstream DNS servers can face these issues:

Network Restrictions: DNS servers like 1.1.1.1 or 8.8.8.8 may be blocked by firewalls
ISP Interference: Carriers can redirect or poison DNS queries
Geo-blocking: DNS services in certain regions may be inaccessible
Privacy Concerns: You may need to hide your real IP behind a proxy

🚀 Core Features

DoH & DoT Proxy Support

Built on AdGuard Home and heavily customized, NullPrivate DNS adds these key capabilities:

Rebranding Announcement for AdGuardPrivate

Mon, 11 Aug 2025 11:58:20 +0800

We recently received a notice from AdGuard stating that “AdGuard” is a registered trademark and may not be used without authorization, even with prefixes or suffixes, as such usage could constitute infringement. To avoid legal risks, our service has been officially renamed “NullPrivate”.

For existing users, your service remains completely unaffected. We will continue to serve you via the adguardprivate.com domain; only the official website and contact information will be migrated.

Added DDNS Feature

Mon, 21 Jul 2025 14:15:47 +0800

If you already have a NullPrivate service, you can now use the DDNS feature.

Overview

NullPrivate has open-sourced the DDNS script. This dynamic DNS (DDNS) is designed to provide a simple method for quickly setting up private dynamic DNS without purchasing a domain name. This DDNS script was specifically developed for nullprivate.com. By leveraging NullPrivate’s core functionality, you can seamlessly implement this feature.

Usage

Ensure NullPrivate is deployed and running.
Navigate to DNS Rewrite and download the DDNS script.
Run the script.

Windows

Better ECS Support

Mon, 10 Mar 2025 13:15:51 +0800

To provide the best DNS resolution experience, we have preset some recommended configurations, but there is still one setting that requires your attention: “EDNS Client Subnet”.

Enable EDNS Client Subnet (ECS)

For an even better experience, you may want the DNS server to return the server IP closest to your geographic location. EDNS Client Subnet (ECS) makes this possible. It allows sending a subnet containing geolocation information to the DNS server so that the server can return the optimal DNS resolution result.

NullPrivate - Enhanced DNS Service Based on AdGuard Home

Mon, 20 Jan 2025 19:36:59 +0800

NullPrivate: Privacy-First DNS Service

Visit the official site to learn more: NullPrivate

This project is a secondary development based on AdGuard Home and follows the GPL 3.0 open-source license.

Source code is open at: GitHub - NullPrivate/NullPrivate

Enhanced Features

Compared to the original AdGuard Home, we have added the following capabilities:

📜 Automated SSL Certificate Management
- Automatic certificate issuance and renewal
- Support for wildcard certificate configuration
🛡️ Enhanced Security Features
- Intelligent rate-limiting protection
- Optimized access experience for mainland China
⚙️ Optimized System Configuration
- DHCP service disabled to focus on DNS functionality
🔄 DDNS Support
🌉 Proxy Support
- Download configuration files via proxy
- DoH/DoT proxy support
🚦 DNS Split-Horizon Support
🚫 Anti-addiction App List Support

Managed Service Advantages

We provide a professional DNS hosting service with the following characteristics:

Full Support for HTTP/3 Protocol

Wed, 15 Jan 2025 10:40:29 +0800

NullPrivate has fully implemented support for the HTTP/3 protocol. All existing users will be automatically upgraded to enjoy the performance improvements brought by HTTP/3 without requiring any additional configuration.

Important Update Notes

iOS Users: Can now directly use HTTP/3 via DoH protocol for lower network latency
Android Users: Due to system limitations, DoT protocol is still used; support will be added after future Google updates
Performance Improvement: Significantly faster initial response time compared to HTTP/2 with quicker connection establishment
Smart Fallback: Automatically switches to HTTP/2 in network environments without HTTP/3 support to ensure service stability

Introducing Custom Client Name Feature

Sun, 29 Dec 2024 14:01:19 +0800

Feature Overview

To enhance user experience, NullPrivate now supports custom client naming. This feature enables you to set unique identifiers for different devices, making device management more intuitive and convenient.

Configuration Guide

Configuration methods vary slightly depending on device type:

Android Devices

Simply add a custom prefix before the domain name using this format:

{device-name}.{original-domain}

Example: xiaomi-15pro.xxxxxxxx.nullprivate.com

iOS Devices

Navigate to the “Setup Guide” page
Enter your custom name in the “Client ID” field
Download and apply the new configuration profile

The Necessity of Ad Blocking: Safeguarding Attention and Privacy in the Digital Age

Wed, 04 Dec 2024 11:33:11 +0800

Deconstructing the Modern Advertising Ecosystem

The Advertiser Profit Model

The contemporary advertising system rests on a complex chain of interests:

Advertisers connect marketers and users through media platforms
Revenue comes from marketers’ placement fees, not from users
The goal is to maximize “conversion rates”—turning ad viewers into paying customers

The Battle for Conversion

In this war for attention:

Higher conversion rates translate into higher ad prices
Ad-delivery efficiency directly affects revenue
“Personalized targeting” has become the core strategy for boosting conversions

The Truth Behind Personalized Ads

The Depth of Data Collection

Modern ad systems harvest user information through multiple channels:

Service Resource Optimization Strategy Guide

Mon, 02 Dec 2024 16:12:46 +0800

Background

As user numbers grow and feature demands increase, we have observed that certain high-resource-consumption configuration options can lead to service instability. To ensure service quality, we conducted an in-depth analysis and formulated a corresponding optimization plan.

Resource Optimization Strategy

1. Filter Update Mechanism Optimization

Current Situation

Some users have configured hourly filter updates
Each update requires a full download-parse-deduplication cycle
International bandwidth limitations prolong update times
Server resources remain under continuous high load

Optimization Plan

We have adjusted the minimum update interval to 72 hours for the following reasons:

Basic Memory Limit Adjustment

Fri, 29 Nov 2024 16:01:48 +0800

Some users’ environments restart frequently; checking the logs shows the exit reason is memory usage hitting the 300 MB limit, causing a forced shutdown.

We are now raising the per-container limit to 500 MB to alleviate the restart issue.

If your environment experiences login or restart problems, please don’t hesitate to contact us at any time—solving customer issues is our responsibility.

Need help?

Contact on WeChat private6688
or Send email service1@nullprivate.com
Please describe your issue in detail, and we will respond as soon as possible.

Always Here to Support You

Wed, 20 Nov 2024 15:30:12 +0800

Quick Start Guide

To help you get up and running with our service as smoothly as possible, we’ve prepared a detailed User Guide.

Thoughtful Support Service

Personalized Guidance

We understand that new users may face challenges when first getting started. Therefore, we:

Continuously refine the structure of our product documentation
Provide clear configuration guides
Have prepared an extensive FAQ

Timely Response

While we employ a registration-free system to protect user privacy, that does not compromise the support we provide. You can reach us through the following channels:

How to Set Up a Dedicated Link

Tue, 29 Oct 2024 11:51:06 +0800

Some paid AdGuard Home services provide a dedicated link but do not allow users to access the admin panel; the provider manages the rules on their behalf.

This indicates that they do not offer a private admin backend; the service is simply delivered through a domain-based reverse proxy, keeping costs relatively low.

You need to rent a server to run AdGuard Home and configure an Nginx reverse proxy to achieve this functionality.

All-new Upgrade – Enhanced Ad-blocking Rules

Mon, 28 Oct 2024 22:13:55 +0800

Rule Update Notes

To meet users’ demand for more robust ad blocking, we’ve completely overhauled our filtering rule strategy. The new version significantly improves ad-filtering effectiveness while keeping false-positives low. This update stems from user feedback; on the premise of ensuring normal website access, we have added more precise interception rules.

Rule List Overview

We have compiled the following professional rule lists; you can choose the ones that fit your needs:

Trial Service Details

Mon, 28 Oct 2024 11:27:15 +0800

As a provider focused on delivering custom ad-filtering rules, we understand the considerations users have when choosing a service. Although our operating costs are high, we remain committed to giving users maximum customization flexibility.

To let you fully appreciate the value of our service, we’ve launched an exceptional trial plan. This version includes all premium features and is identical to the paid service, allowing you to experience the unique advantages of customized filtering with zero risk.