Get detailed network ownership and routing intelligence with Autonomous System (ASN) data for every active network.
| asn | name | org | domain | type | country_code | rir | status | created | updated | prefixes4 | prefixes6 | peers | upstreams | downstreams |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AS25255 | H3G-AUSTRIA-AS | Hutchison Drei Austria GmbH | drei.com | isp | AT | RIPE | allocated | 2002-09-13T12:01:04Z | 2021-05-28T08:29:48Z | 46.220.0.0/16 77.116.0.0/14 77.116.0.0/17 [...] | 2a02:2861::/32 2a02:2861:d::/48 2a02:2861:e::/48 [...] | 1031 1853 3303 [...] | 1121 1764 8447 [...] | 8437 31543 35579 [...] |
| AS13335 | CLOUDFLARENET | Cloudflare, Inc. | cloudflare.com | hosting | US | ARIN | assigned | 2010-07-14T00:00:00.000Z | 2017-02-17T00:00:00.000Z | 1.0.0.0/24 1.1.1.0/24 5.10.214.0/24 [...] | 2001:678:19c::/48 2400:cb00:4::/48 2400:cb00:11::/48 [...] | 42 286 513 [...] | 174 260 557 [...] | 31 49 112 [...] |
| AS1221 | ASN-TELSTRA | Telstra Limited | telstra.net | business | AU | APNIC | allocated | 2000-01-31T00:00:00.000Z | 2024-05-03T08:07:36Z | 1.120.0.0/13 1.128.0.0/11 58.160.0.0/12 [...] | 2001:8000::/20 2401:a480::/48 | 703 16276 2687 [...] | 4637 4826 | 109 714 800 [...] |
| AS15169 | Google LLC | google.com | hosting | US | ARIN | assigned | 2000-03-30T00:00:00.000Z | 2012-02-24T00:00:00.000Z | 8.8.4.0/24 8.8.8.0/24 34.0.48.0/20 [...] | 2001:4860::/32 2001:4860:4820::/48 2001:4860:4821::/48 [...] | 3257 3303 3320 [...] | 3356 6453 9304 | 19527 32381 36040 [...] | |
| AS2828 | XO-AS15 | Verizon Business | verizon.com | isp | US | ARIN | assigned | 2001-12-19T00:00:00.000Z | 2022-05-31T00:00:00.000Z | 63.148.224.0/21 64.0.0.0/14 64.35.0.0/17 [...] | 2610:18::/32 | 174 209 286 [...] | 5069 6167 7014 [...] | |
| AS174 | COGENT-174 | Cogent Communications | cogentco.com | isp | US | ARIN | assigned | 1996-05-16T00:00:00.000Z | 2012-03-02T00:00:00.000Z | 2.58.4.0/22 2.59.22.0/24 5.22.204.0/22 [...] | 2001:550::/32 2001:550:5607::/48 2001:978::/32 [...] | 209 249 286 [...] | 3 4 14 [...] |
Understand global network ownership with ASN, organization, registry, and routing information for every routable IP range.
| Field | Description |
|---|---|
asn |
The Autonomous System Number. |
name |
The short name of the ASN (netname). |
active |
Whether the ASN is active. |
status |
The RIR assignment/allocation status for the ASN. |
created |
Date the ASN was created/assigned. |
updated |
Last updated timestamp from the registry. |
org |
The organization that owns the ASN. |
domain |
The domain name of the organization. |
type |
Organization type. One of: business, hosting, government, education, isp, unknown. |
country_code |
The ISO 3166-1 alpha-2 country code of the network or organization. |
rir |
The Regional Internet Registry that assigned the ASN (APNIC, ARIN, LACNIC, RIPE, AFRINIC). |
prefixes4 |
IPv4 prefixes announced by this ASN according to BGP. |
prefixes6 |
IPv6 prefixes announced by this ASN according to BGP. |
peers |
Peer ASNs for this ASN. |
upstreams |
Upstream provider ASNs. |
downstreams |
Downstream/customer ASNs. |
Autonomous System (ASN) database is available in JSON format. IP to ASN database is available in MMDB, CSV, JSON, and Parquet formats.
Autonomous System data for every registered AS. ASN, organization, country, registry, prefixes, and more.
IP to Autonomous System number (ASN), company name, and domain name. Updated daily. Free forever.
To purchase a database for internal business use, fill out the form so we can verify your use case. No sales calls — we’ll send you a direct purchase link after verification.
For commercial or redistribution use, data samples, or a quote for a custom dataset, get in touch and we’ll get back to you as soon as possible.
Our complete ASN data is also available for integration in minutes with our IP geolocation API, free up to 1,000 requests per day.
An Autonomous System Number (ASN) identifies a network on the internet that controls a set of IP prefixes and routing policies. An IP to ASN database links IP addresses and prefixes to their ASNs and network operators for routing, security, and enrichment.
Use the IP to ASN database to match an IP to the announced BGP prefix and its Autonomous System Number. You can perform IP enrichment at query-time using MMDB or offline using CSV/Parquet.
CSV and JSON for enrichment, MMDB for production lookups, and Parquet for analytics. We support secure download and S3 delivery with daily updates.
An IP to ASN database maps IP prefixes to the autonomous systems that announce them. Use it for IP enrichment, security monitoring, routing intelligence, and compliance workflows inside your own infrastructure.
Our ASN database is refreshed daily with data from RIRs and global BGP feeds. Choose the delivery schedule you need: monthly, weekly, or daily.
Each record includes the autonomous system number, organization name, registry, allocation date, associated IP prefixes, and routing data.
Yes. Many teams use the ASN database alongside our geolocation, threat, and IP to Company datasets to build a complete picture of network activity.
Need help with a specific use case? Get in touch and we’ll work with you to find the best data solution for your needs.
Yes, the free IP to ASN database includes country-level mappings and network ownership information by IP address range.
We can deliver via secure download, S3 bucket, or direct sync to your infrastructure. Automated delivery is available for all update cadences.
Security teams use ASN data to track suspicious networks, detect hijacked prefixes, and enrich threat intelligence platforms. Talk to us if you need help integrating with your tooling.
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