How to Use Proxy Services to Resolve Your ASN is Blocked Error?

ASN blocking is a common and troubling issue in today’s online environment. When users or businesses attempt to access a specific website or service and suddenly see the message “Your ASN is blocked,” it means that the entire network segment is prohibited from access. For many businesses, especially in 2025, ASN blocking has become one of the most destructive challenges, potentially leading to business disruptions, data retrieval failures, and significant financial losses.

In this article, we will delve into the issues related to “your ASN is blocked,” where you will learn about:

●  The causes of ASN blocking

●  Specific business scenarios that are severely impacted

●  Step-by-step solutions to the “Your ASN is Blocked” error

●  Practical tips for reducing IP bans in the future

What is ASN?

ASN (Autonomous System Number) is a fundamental component of the core routing system of the Internet. Simply put, it is a unique number assigned by global Internet organizations to ISPs, data centers, or large enterprise networks to identify and manage network routing.

To understand it more intuitively, think of ASN as the “postal code” of the Internet. It informs other networks which group of IP addresses belongs to which operator or organization. For example, large companies like Google, Amazon, and Cloudflare have their own ASNs. This way, when data is transmitted across the Internet, routers can find the path more quickly.

However, because ASN directly maps to operators and network sources, website administrators often use it to control access. When an ASN is deemed “high risk” or has a “high abuse rate,” it may be blacklisted, leading to access being blocked.

What is “Your ASN is Blocked”?

Understanding the “Your ASN is Blocked” error is fundamental to resolving it. When users access a website, the target server checks the ASN of the source IP address. If the ASN appears on the website’s blocklist, the access request is directly denied, showing a message like: “Your ASN is blocked.”

When you encounter this message, it means that the target website is not just blocking your IP address; it is blocking all IP addresses within the entire ASN. This is similar to a community being banned from entering a city because of the misbehavior of a few individuals. Unlike a single IP ban, ASN blocking has a broader impact, potentially preventing thousands of users or businesses from accessing specific resources, even if they have committed no wrongdoing.

Why does “Your ASN is Blocked” Occur?

“Your ASN is Blocked” is not merely an IP block; it is a high-level interception of access traffic for the entire ASN by the website or platform. When an ASN is identified as having abuse, risk, or compliance issues, the website adopts this method to reduce potential threats.

The most common triggering factors include:

1. Widespread Abuse and Spike in Abnormal Traffic: The most common motive for blocking is to defend against large-scale abuse. When an ASN shows persistent malicious behavior, such as automated script scraping, bulk registration of fake accounts, anomalous ad clicks, or frequent attack attempts, the system may blacklist the entire ASN. Unlike a single IP ban, ASN-level interception can quickly stop many risk sources and save management costs. However, normal users often suffer collateral damage.

2. High-Risk Attributes of Data Centers: Many ASN blocks occur within networks of data centers. The IP addresses in such networks are often shared among different users for proxies, tunnels, and automated operations. From the target website’s perspective, access from these ASNs lacks traceability and can easily bypass restrictions. Therefore, once a website detects that an ASN is associated with a high percentage of proxies or anonymous tools, it may directly implement a blocking strategy for the entire ASN.

3. Automated Fingerprints and Homogeneous Behavior: Even if users themselves have not violated any rules, if the traffic of the entire ASN exhibits a high degree of consistency in technical characteristics, it can trigger the “your ASN is blocked” error. For example, a large number of requests using the same browser fingerprint, TLS configuration, or request header combinations; overly mechanical access rhythm, lacking normal user browsing patterns. Once these “bot characteristics” aggregate at the ASN level, it will trigger the website’s overall risk control mechanism, leading to ASN blocking.

4. Resource Protection and Performance Pressure: In high-traffic scenarios, websites often have to take defensive measures at the ASN level. For instance, during promotional events, the launch of popular products, or a surge in registrations, if a particular ASN shows an abnormally high request volume, it can consume a lot of server resources, even causing downtime. To prevent a “herd effect,” site administrators may temporarily enable ASN-level blocking rules. Such blocks may sometimes be short-term but still have a significant impact on users.

5. Third-Party Blacklists and Threat Intelligence Sharing: Many websites use third-party blacklist services or threat intelligence to assess risk. When an ASN is marked as a spam source, web scraping hotspot, or attack hotspot in external databases, the site will automatically use this intelligence for filtering. The problem is that this “external borrowing” often has spillover effects: even if there are only some problematic IPs in your ASN, the entire ASN may be blocked, ultimately leading innocent users to encounter IP ban or ASN blocked messages.

6. Compliance and Business Policy Restrictions: Some ASN blocks are not purely technical considerations but arise from business and compliance needs. A typical example is streaming platforms that have to comply with copyright, tax, licensing, or geographical legal requirements. If certain ASNs are deemed to come from high-risk countries or unauthorized areas, the platform will directly restrict access. Such ASN blocking is essentially a policy measure, making it difficult for users to bypass, even by switching IPs.

7. Configuration Errors and Misjudgments: Finally, an overlooked reason is misjudgment. For example, campus networks often use NAT technology, with thousands of users sharing the same ASN exit. If some users trigger risk control, the entire ASN may be blocked as a result. In addition, some websites’ firewalls or CDN configurations may be overly aggressive, mistakenly identifying normal traffic as abnormal sources, ultimately triggering ASN blocking.

What Business Scenarios are Affected by ASN Blocking?

The impact of ASN blocking is far broader than most people realize; almost any business operation that relies on internet access may be affected. Here are three typical affected scenarios:

●  E-commerce and Price Monitoring: Companies rely on real-time data scraping to track competitor prices. ASN blocking can cripple the entire monitoring system, leading to strategy delays and sales losses.

●  Digital Marketing and Ad Verification: Ad agencies need to verify ad performance from multiple geographical locations. ASN blocking may prevent access to critical platforms, hindering campaign optimization.

●  Finance and Market Research: Investment companies gather global market data. ASN blocking may cut off data streams, affecting the accuracy of analysis reports and trading decisions.

How to Resolve the “Your ASN is Blocked” Error?

Resolving the “Your ASN is Blocked” error requires a systematic approach. We categorize the feasible paths into four types: Network Reset (quick troubleshooting), Appeal to the Site (official channel), Switch to Alternative Network Exit (emergency alternative), and Use High-Quality Residential Proxies (long-term solution). Each method has different success rates, costs, and sustainability; it is recommended to start with low-cost operations and combine multiple methods as necessary.

1. Network Reset and IP Refresh (Quick Troubleshooting)

When ASN blocking may be temporary or based on the amplification effect of a single exit IP, obtaining a new public IP is the fastest experimental method. By rebooting the router, releasing/renewing DHCP, or simply switching network devices, we may obtain different exit points, thus bypassing short-term IP bans or local ASN blocks. This method is suitable for individuals or small teams facing temporary access failures and wanting to conduct a speed test first.

👉 Here’s a step-by-step guide:

●  Power off and restart the router/modem, waiting 1–5 minutes before reconnecting.

●  Release and renew IP on the device: Windows uses ipconfig /release then ipconfig /renew; Linux uses sudo dhclient -r then sudo dhclient (varies by distribution).

●  Use another device (mobile phone or laptop) to connect to the same network to verify if the “Your ASN is blocked” message still appears.

●  If the issue persists, contact your ISP to inquire whether CGNAT is in place, if they can reallocate a public IP, or request a temporary change of exit.

If the block affects the entire ASN (and not just a single IP), changing the IP may not resolve the issue; furthermore, many ISPs use CGNAT or map multiple users to the same exit, making it impossible for you to obtain an independent public IP, thus rendering this method ineffective.

2. Appeal to the Website Administrator (Official Handling)

When you determine that the block may be a misjudgment (e.g., a business account being mistakenly affected or a campus network being blocked), appealing through official channels is often the most formal and long-term effective repair method. Providing clear, structured information to the other party about the error details and legitimate usage proof can help them verify logs, lift the erroneous block, or provide whitelisting/exemptions. This step is especially important for business accounts or partners needing stable long-term access.

👉 How to proceed:

●  Look for the “Contact / Support / Help / Abuse” page on the target site, prioritizing official ticket systems or support@email.

●  In the ticket, specify key information (be precise): the timestamp of the error, your public IP, the ASN number corresponding to that IP (which can be obtained via whois/rdap), a complete screenshot of the error page, and the full User-Agent.

●  Explain your access purpose and usage scenario (e.g., enterprise monitoring, API debugging, legitimate content viewing, etc.), and attach log snippets or request samples for troubleshooting; clearly request: please verify and lift the block against this ASN or whitelist our IP.

●  Politely follow up: if there’s no reply within 48–72 hours, you may provide more information or escalate the ticket through site social/developer forums or customer service channels (if available).

This method is entirely dependent on the internal policies and response willingness of the website: some platforms may automatically implement blocking based on third-party intelligence (e.g., WAF or blacklist services), and administrators may not be able or willing to manually allow access; moreover, the appeal process usually takes time, which may not meet emergency access needs.

3. Switch to Alternative Network Exit

When you need to quickly complete logins, payments, etc., switching to a different network exit can quickly verify whether it is an ASN-level block and temporarily restore access. Mobile data, a friend’s Wi-Fi, or public networks often belong to different ASNs and can provide a feasible detour solution in a short time. This method is suitable for one-time or short-term needs but is not advisable for long-term stable access.

👉 How to operate:

●  Enable mobile data and turn on personal hotspot (Tethering), then connect the laptop or other devices to that hotspot and try to access the target website.

●  Switch to another SIM card or mobile data from a different carrier (the probability of different ASNs is higher).

●  Test access using trusted friends’ or colleagues’ home/office Wi-Fi, or go to a library to connect to public Wi-Fi.

●  If frequent switching is needed, you may temporarily purchase a local data card or arrange a backup network line as a fallback.

Such methods are quick but not sustainable: mobile data has limitations on usage, and speed and stability may not be reliable; frequent network switching can affect work efficiency, and in some regions or scenarios (e.g., geography-sensitive websites), the new exit ASN may also be blocked, leading to poor reliability.

4. Deploy High-Quality Residential Proxy Services

For teams or individuals frequently encountering ASN-related access restrictions, using high-quality residential proxies is often the most reliable and scalable long-term solution. Residential proxies use real home IPs, which are typically distributed across many different ASNs, making the traffic appear like that of ordinary end users, thus being less likely to trigger ASN blocking or IP bans compared to data center IPs. Residential proxies are suitable for scenarios requiring continuous scraping, global access, or stable logins, helping to make the network image of “where we come from” appear more natural.

When selecting and using residential proxies, focus on: the geographical and ASN distribution of the proxy pool, session management (persistent session/rotation strategy), concurrency limits, request rate control, and request header/session spoofing. It is also essential to adhere to the target site’s use policies and legal regulations, setting reasonable rates and concurrency to avoid excessive scraping that leads to further blocking. Residential proxies are typically paid services, costing more than temporarily switching networks or manual appeals; moreover, the quality of proxy pools can vary: if the supplier lacks management or if there are abused IPs in the pool, blocking may still occur. Lastly, the compliance and ethical boundaries of proxies need to be approached cautiously.

Achieving Seamless Access with Thordata

When you need a reliable, large-scale, and efficient network access solution, Thordata offers a comprehensive proxy infrastructure. With over 60 million global IP addresses and coverage across more than 195 countries, it helps businesses achieve seamless network access without worrying about ASN or IP blocking issues.

Thordata addresses the “Your ASN is Blocked” error in the following ways:

●  Diverse Proxy Types: Residential Proxies simulate real user access, Static ISP Proxies provide stable connections, and Mobile Proxies use carrier networks, all avoiding suspicious ASN associations.

●  Precise Location Capabilities: Supports city-level and even carrier-level location selection, ensuring that the IP you use does not come from a blocked ASN range.

●  Intelligent Session Management: Supports IP rotation to disperse requests or static sessions for long-term tasks, flexibly adjusting based on your business needs to avoid triggering frequency limits.

●  High-Performance API Integration: Provides a range of scraping products, such as Universal Scraping API and Web Scraper API, easily embedded into existing data scraping or automation tools, ensuring a 99.9% connection success rate.

●  Detailed Analysis Dashboard: Monitors proxy usage and performance metrics, helping businesses optimize strategies.

For enterprise users who cannot tolerate business interruptions and data losses caused by “Your ASN is Blocked” errors, Thordata provides a one-stop network access solution that comprehensively addresses ASN-level blocking issues, ensuring business continuity and data integrity.

👍 Note: Thordata offers a free trial!

Tips to Reduce IP Bans in the Future

Prevention is better than a cure. The following tips can help you reduce the likelihood of encountering IP bans in the future:

●  Reasonably control request frequency, simulating human operational patterns rather than machine behaviors.

●  Adhere to the target website’s robots.txt protocol and service terms.

●  Use high-quality proxies to rotate IPs, dispersing traffic across multiple ASNs.

●  Set random delays between requests to reduce the probability of bot detection.

●  Regularly update User-Agent strings and HTTP headers to avoid patternized traffic.

●  Monitor IP reputation and utilize IP inspection tools to detect issues in advance.

Conclusion

ASN blocking can lead to severe interruptions in business operations, preventing companies from accessing critical resources and data. By implementing effective solutions like network adjustments, administrator communication, or advanced proxy tools, you can overcome this challenge.

We hope this blog article helps you gain a comprehensive understanding of ASN blocking issues and find solutions. If you have more questions regarding network access and data collection, please check out our other articles on bypassing IP bans, the definition of rotating IP addresses, and how IP rotation works.