ARIN Lookup
Use our ARIN Lookup tool to quickly find the organization, IP range, ASN, and contact information for any IP address in the ARIN region.
About ARIN Lookup
ARIN Lookup - Check IP and ASN Ownership Instantly
Use our free ARIN Lookup Tool to identify the organization, network owner, or Autonomous System (ASN) associated with any IP address. Instantly get detailed WHOIS information directly from the American Registry for Internet Numbers (ARIN), including IP ranges, CIDR blocks, contact details, and registration data.
What is ARIN?
ARIN (American Registry for Internet Numbers) is one of the five global Regional Internet Registries (RIRs) that allocate and manage IP addresses and ASNs.
It covers North America, Canada, parts of the Caribbean, and the North Atlantic islands, ensuring fair distribution and management of Internet number resources.
ARIN maintains a public WHOIS database where anyone can search for IP ownership, organizational information, and technical or abuse contacts for internet resources.
What Does the ARIN Lookup Tool Do?
Our ARIN Lookup tool queries the ARIN WHOIS database in real time to return verified network and ownership data. You can search by IP address, domain name, or ASN to get complete registry information, such as:
- Organization name and handle
- Assigned IP address range (IPv4 / IPv6)
- Associated ASN (Autonomous System Number)
- Network name and CIDR block
- Registration and last update dates
- Technical and abuse contact details
- Country and registry source
This information is crucial for identifying IP owners, verifying network legitimacy, and investigating suspicious or malicious online activity.
How to Use the ARIN Lookup Tool
- Enter an IP address (e.g., 8.8.8.8), domain name, or ASN (e.g., AS15169) in the input box.
- Click “Validate ARIN Lookup”.
- The tool will query ARIN’s WHOIS database and display detailed results instantly.
- View ownership, routing, and contact data in an easy-to-read format.
Example ARIN Lookup Result
Organization: Google LLC
Org Handle: GOOGL-1
ASN: AS15169
IP Range: 8.8.8.0 - 8.8.8.255
Country: United States
Registry: ARIN
Updated: 2024-02-17
Abuse Email: abuse@google.com
Why Use the ARIN Lookup Tool?
- Identify IP Ownership: Find the owner of an IP or ASN within the ARIN region.
- Verify Network Legitimacy: Confirm if a domain or IP is registered to a valid organization.
- Resolve Abuse Complaints: Retrieve abuse contact emails to report spam or cyberattacks.
- Cybersecurity Analysis: Map malicious IP sources or monitor routing allocations.
- Transparency for ISPs & Hosts: Ensure your provider’s network information is authentic.
ARIN vs. Other Regional Internet Registries (RIRs)
ARIN is responsible for the North American region. The internet is divided into five RIRs that manage IP resources globally:
| RIR | Region |
| ARIN | North America, parts of the Caribbean |
| RIPE NCC | Europe, Middle East, Central Asia |
| APNIC | Asia-Pacific region |
| LACNIC | Latin America & Caribbean |
| AFRINIC | Africa |
Common Use Cases
- Tracking IPs involved in spam, phishing, or DDoS activity
- Validating ownership of IPs during network migrations
- Identifying upstream providers for routing configuration
- Investigating abuse reports or complaints efficiently
- Researching ISP and hosting transparency
Stay Informed with Accurate Network Data
The ARIN Lookup Tool empowers security professionals, network admins, and researchers with fast, reliable, and transparent access to IP registration data.
Keep your network operations secure and informed, perform an ARIN WHOIS lookup anytime to verify ownership, detect anomalies, and maintain digital trust.
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Frequently Asked Questions About ARIN Lookup
1. What is an ARIN Lookup?
An ARIN Lookup lets you find ownership and registration details of IP addresses or Autonomous System Numbers (ASNs) managed by the American Registry for Internet Numbers (ARIN). It helps identify who owns a specific IP, along with contact information and network details.
2. How does the ARIN Lookup Tool work?
The ARIN Lookup Tool queries the official ARIN WHOIS database to fetch live data. When you enter an IP, domain, or ASN, it returns organization name, IP ranges, ASN, country, and abuse contacts registered under ARIN.
3. Who can use ARIN Lookup?
Anyone can use ARIN Lookup, from network administrators and cybersecurity professionals to individual users who want to verify an IP owner or investigate suspicious online activity. No login or registration is required.
4. What’s the difference between ARIN and other RIRs?
ARIN manages IP and ASN allocations for North America, Canada, and parts of the Caribbean. Other RIRs include RIPE NCC (Europe), APNIC (Asia-Pacific), LACNIC (Latin America), and AFRINIC (Africa), each managing IP resources in their respective regions.
5. Why is ARIN Lookup important for cybersecurity?
ARIN Lookup helps trace malicious IPs, identify abuse contacts, and verify if a network or domain is legitimate. It’s an essential tool for incident response, spam reporting, and threat intelligence analysis.