ASN Lookup Tool
Find detailed network ownership and routing information with a quick ASN lookup.
Discover What an ASN Lookup Tool Does
Our lookup tool lets you uncover ownership details of an Autonomous System, its IP ranges, and routing paths in real time.
Understanding Autonomous System Numbers (ASNs)
An ASN is a unique ID assigned to a group of IP networks under the control of one organization. Using an ASN lookup helps identify the network operator and routing policies.
What You Can Learn
See the registered organization, allocated IP ranges, country of registration, and peering relationships—essential for network monitoring, troubleshooting, and threat analysis.
Why ASN Info Matters
Insights into traffic routing, vulnerabilities, and network ownership patterns help security teams and network engineers make better decisions.
How to Use the ASN Lookup Tool
- Enter an IP or ASN: Type the IP address or ASN number in the search field.
- Click “Lookup ASN”: The tool retrieves live data from multiple internet registries.
- View ASN Info: See organization name, prefixes, country, and registry data.
- Analyze Connections: Review linked networks, peering, and routing paths.
Core Features
- Real-time ASN data retrieval
- Supports IPv4 and IPv6
- Displays BGP prefixes and peering info
- Shows country, registry, and ISP name
- Fast, secure, and free – no sign-up
- Mobile and desktop optimized
Why Professionals Use ASN Lookup
- Identify the organization behind an IP
- Monitor and trace network ownership changes
- Analyze BGP routing and network relationships
- Support cybersecurity and threat intelligence
- Validate hosting providers and data centers
Who Benefits Most
- Network engineers & administrators
- Cybersecurity analysts
- ISPs and hosting providers
- Researchers & academic institutions
- Developers of IP-based applications
Data You Get from ASN Lookup
- ASN number and name
- Organization or ISP
- Country and region
- BGP announced IP ranges
- Registry info (ARIN, RIPE, etc.)
- Peering and upstream provider details
Frequently Asked Questions
An ASN identifies a network on the internet, helping route traffic and define ownership.
Yes, entering an IP will run a lookup to find its ASN details.
Our tool pulls directly from registries, making it highly reliable.
An ASN identifies networks, while an IP address identifies devices within those networks.
Yes, it’s free for both personal and business use.
The database updates regularly to match global registry changes.