ASN Data: Understanding Its Role in Online Security and Identity

Fundamental RoleASNs are unique identifiers that enable the routing of internet traffic between different networks, forming the backbone of global connectivity.

Security ImplicationsBy analyzing ASN data, businesses can detect unusual traffic patterns, identify VPN/proxy usage, and pinpoint high-risk geographical origins, crucial for fraud prevention and cybersecurity.

Identity Verification EnhancementIntegrating ASN insights into identity verification workflows allows for more robust risk assessments, helping to distinguish legitimate users from bad actors.

Compliance & TrustLeveraging ASN data aids in meeting regulatory compliance by providing an additional layer of verification and helps build trust in online interactions.

What is an Autonomous System Number (ASN)?

In the vast and interconnected world of the internet, data travels across countless networks to reach its destination. To manage this intricate web efficiently, the internet is structured into large, independently operated networks known as Autonomous Systems (AS). Each Autonomous System is assigned a unique identifier called an Autonomous System Number (ASN).

Think of the internet as a global postal service. Just as each major city has its own post office responsible for delivering mail within its jurisdiction and coordinating with other cities, each AS acts as a 'network post office.' These ASes exchange routing information using a protocol called Border Gateway Protocol (BGP) to determine the most efficient path for data packets. Without ASNs, the internet would be a chaotic mess, unable to efficiently direct traffic from one point to another.

ASNs are managed by regional internet registries (RIRs) and come in two main types: 16-bit ASNs (ranging from 1 to 65535) and 32-bit ASNs (ranging from 65536 to 4294967295). While 16-bit ASNs were initially sufficient, the rapid growth of the internet led to the adoption of 32-bit ASNs to accommodate the increasing number of networks.

Practical Example: When you visit a website, your request travels from your internet service provider (ISP) (which is an AS) across various other ASes until it reaches the AS hosting the website's server. Each hop involves routers consulting BGP tables to decide the next AS in the path, all facilitated by these unique ASN identifiers.

The Role of ASN Data in Online Security and Fraud Detection

Beyond simply facilitating internet routing, ASN data is a powerful tool in the arsenal of online security and fraud detection. By analyzing the ASN associated with an IP address, businesses can gain critical insights into the origin and nature of online interactions, helping them identify and mitigate risks.

One primary application is detecting the use of Virtual Private Networks (VPNs), proxies, or Tor exit nodes. Traffic originating from known VPN or proxy ASNs might signal an attempt to conceal identity or location. While not all VPN usage is malicious, it can be a red flag in contexts like financial transactions, account creation, or high-value interactions where precise location and identity are crucial.

ASN data also helps in identifying high-risk geographical locations. If a user attempts to log into an account from an ASN typically associated with a country known for high fraud rates, or from an ASN that is geographically inconsistent with previous legitimate activities, it can trigger a security alert. This is particularly useful for businesses operating globally, allowing them to tailor their risk assessment based on regional threat landscapes.

Furthermore, ASN data can expose botnets and automated attacks. Malicious botnets often operate from a distributed network of compromised machines, which may belong to different ASNs. Unusual spikes in traffic from a specific ASN, or traffic patterns inconsistent with human behavior, can indicate an automated attack in progress. By monitoring ASN data, security teams can quickly identify and block these sources.

Practical Example: A user attempts to create a new account for a banking service. Their IP address resolves to an ASN known to be a data center proxy provider, located in a country different from their declared residence. This discrepancy, highlighted by ASN data, would immediately flag the account creation attempt as high-risk, prompting further verification or denial.

ASN Data in Identity Verification Workflows

Integrating ASN data into identity verification (IDV) workflows significantly enhances their robustness and accuracy. For businesses performing KYC (Know Your Customer) or AML (Anti-Money Laundering) checks, understanding the network origin of a user's interaction provides an additional layer of context and risk assessment.

When a user submits an ID for verification, their IP address and associated ASN can be cross-referenced with various databases. This allows for:

• Location Verification: Confirming that the user's declared location aligns with the geographical information derived from their ASN. Significant discrepancies can indicate spoofing attempts.
• Device and Network Consistency: Checking if the ASN is consistent with typical residential ISPs versus commercial data centers. An application from a data center ASN might suggest a bot or a sophisticated fraud attempt.
• Risk Scoring: Contributing to an overall risk score for each transaction or onboarding attempt. ASN data can be weighted alongside other factors like document authenticity, biometric liveness, and sanction list checks.
• Multi-Factor Authentication (MFA) Enhancement: For returning users, if a login attempt comes from a significantly different ASN than usual, it could trigger an additional MFA challenge, even if the password is correct.

Practical Example: A fintech company requires users to verify their identity before opening an account. A user submits their ID, and the system performs an IP analysis. If the IP's ASN belongs to a known VPN provider, even if the ID document seems legitimate, the system can flag it. This triggers a request for additional proof of address or a manual review, preventing potential account takeovers or fraudulent sign-ups facilitated by masked identities.

How Didit Helps: Integrating ASN Data for Enhanced Security

Didit, as an all-in-one identity platform, seamlessly integrates advanced IP and device intelligence, including ASN data, into its comprehensive identity verification and fraud detection capabilities. Our modular approach allows businesses to leverage these insights to build robust and agile verification workflows.

Our IP Analysis module silently captures IP geolocation, VPN/proxy/Tor detection, and device intelligence. This means that as part of your onboarding or authentication process, Didit automatically analyzes the ASN associated with the user's connection. If an IP address is flagged as high-risk due to its ASN (e.g., belonging to a known proxy, or originating from an unexpected region), this information feeds directly into your workflow decisions.

With Didit's visual Workflow Orchestration, you can configure conditional logic based on ASN-derived risk signals. For instance, if the IP Analysis module identifies a high-risk ASN, the workflow can automatically:

• Escalate to a more rigorous verification step (e.g., requiring Active Liveness instead of Passive Liveness).
• Trigger an additional Proof of Address check.
• Flag the session for manual review by your team.
• Immediately block the transaction or account creation if the risk threshold is exceeded.

This proactive use of ASN data helps businesses prevent fraud at the earliest possible stage, reduce manual review queues, and enhance overall security posture without adding friction for legitimate users. By providing a unified platform where identity verification, biometrics, fraud signals (including ASN data), and compliance tools work in harmony, Didit empowers organizations to build trust in the digital age, especially against the backdrop of increasingly sophisticated AI-generated threats.

Ready to Get Started?

Harness the power of ASN data and comprehensive identity verification to protect your business and customers. Didit offers a robust, flexible, and cost-effective solution to secure your online operations.

Explore our pricing: didit.me/pricing

Calculate your ROI: didit.me/roi-calculator

Contact us for a demo: didit.me