ASN Data

Autonomous Systems

Uncover each ASN owner's contact information, IP address ranges, and peer relationships.

Our ASN data are sourced continuously from the authoritative IANA and Whois databases, and are augmented with data from multiple sources.


Owner & Abuse Information

  • Name
  • Organization
  • Address
  • Abuse Email
  • Abuse Phone
  • Country Code
  • Country
  • Domain
  • Registry
  • Registry Link
  • Allocated At
  • Last Updated

Type & Reach

  • Type
  • Status
  • Estimated Population

IP Address Ranges

  • Prefixes (IPv4 and IPv6)
  • Related ASNs

Peer Relationships

  • Peers
  • Upstreams
  • Downstreams
{
    "asn": 1,
    "name": "LVLT-1",
    "org": "Level 3 Parent, LLC",
    "address": ["1234 Main St", "Anytown", "USA"],
    "abuse_email": "[email protected]",
    "abuse_phone": "+1 800 555 1234",
    "country_code": "US",
    "country": "United States",
    "domain": "lumen.com",
    "type": "Business",
    "status": "active",
    "est_population": 5120,
    "registry": "ARIN",
    "registry_link": "https://rdap.arin.net/registry/autnum/3",
    "allocated_at": "2001-09-20",
    "last_updated": "2024-06-18",
    "prefixes_v4": [
        "205.207.214.0/24",
        "212.94.84.0/22",
        // more prefixes...
    ],
    "prefixes_v6": [
        "2001:db8::/48",
        "2001:d0c::/48",
        // more prefixes...
    ],
    "related_asns": [
        4, 5, 6
    ],
    "peers": [
        7, 8, 9
    ],
    "upstreams": [
        10, 11, 12
    ],
    "downstreams": [
        13, 14, 15
    ]
}

Data for Your Workflow

Frequently Asked Questions

If you have any questions about our ASN data, please reach out to us at [email protected].


What is an ASN?

An ASN (Autonomous System Number) is a unique identifier assigned to an autonomous system in the Internet. It is used to identify and manage networks and their traffic. Each ASN is associated with a specific organization or entity that operates the network.

Can I access all the ASN Data for Academic, Educational, or Research purposes?

Yes. Please get in touch at [email protected] from your university or research institution email. Explain briefly what your project is about, what you need and we will get back to you.

Where does the ASN Data come from?

The ASN data is sourced from authoritative registries such as ARIN, RIPE, APNIC, LACNIC, and AFRINIC. These regional internet registries maintain records of ASN allocations and associated contact information.The autority in charge of the ASN allocation is IANA.

How to access ASN Data in bulk?

To access ASN data in bulk you can refer to the ASN data API documentation. Most endpoints support batch requests.