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[ ASN & COMPANY ]

Know who
owns the network

BGP routing data, WHOIS registrants, company enrichment, and IP lease chains — trace every address from the RIR allocation through to the organization actually using it.

4 / 13Rumble, a business customer on Charter

the response's asn and company objects — with every plan

AS15169 Google LLC
AS13335 Cloudflare
AS16509 Amazon.com
AS32934 Meta Platforms
AS8075 Microsoft
Networks
▸ asn: AS11427 — Charter Communications — type: isp route: 72.128.128.0/19 · company: Rumble
Get API Key Explore the data
75K+ Autonomous systems
1M+ BGP prefixes
<40ms Response time
5 Regional registries
[ 01 — DATA COVERAGE ]

Operator, owner and carrier. One API call.

Every IP lookup returns ASN routing metadata, WHOIS registrant details and company enrichment. All derived from live BGP feeds and proprietary enrichment pipelines.

01

ASN details

The network that operates the address: its autonomous system number, name, route prefix, domain, and type (ISP, hosting, business, education, government).

asn name domain route type
02

Company data

The organization that owns the address block, which is often not the network operating it — legal name, domain, and type. Enriched beyond raw WHOIS with proprietary matching and parent-subsidiary resolution.

company.name company.domain company.type
03

Carrier detection

For mobile IPs, the carrier name, MCC, and MNC. Identifies traffic from cellular networks vs. fixed-line broadband or enterprise connections.

carrier.name carrier.mcc carrier.mnc
[ 02 — HOW IT WORKS ]

From raw routing tables to structured data

01 — BGP routing data

BGP routing data

We ingest full BGP table dumps every day from route collectors at major Internet Exchange Points worldwide. Each IP is mapped to its originating ASN and the most specific prefix advertised.

AS path analysis reveals upstream transit relationships, multi-homed networks, and route origin anomalies. Historical data tracks prefix ownership changes and hijacking events.

Daily updates 50+ route collectors Historical data available
02 — IP lease chain resolution

IP lease chain resolution

The WHOIS registrant is rarely the organization actually using an IP. Address blocks are allocated by RIRs to LIRs, leased to ISPs, sub-leased to hosting providers, and re-assigned to end customers. We resolve the full chain.

Lease detection cross-references WHOIS inetnum objects, RIR delegation files, and BGP origin changes to identify sub-allocations, reassignments, and temporary leases. The result tells you not just who registered the block, but who's operating it today.

Multi-hop resolution Sub-allocation tracking Lessee identification
03 — Company enrichment

Company enrichment

Raw WHOIS organization names are often abbreviated, inconsistent, or outdated. Our enrichment pipeline maps them to canonical company records — resolving "GOOG" to "Google LLC", matching subsidiaries to parents.

Network type classification distinguishes ISPs from hosting providers, enterprises from educational institutions, and government networks from military. This powers downstream decisions like ad targeting exclusion and fraud scoring.

350K+ companies 7 network types Parent-sub mapping
[ 03 — Attributes ]

Structured, consistent, ready to use

One call returns the network that announces the address and the company it is assigned to. Every field is typed and documented.

The network5 fields · asn

stringasn.asn

The autonomous system number, prefixed AS.

stringasn.name

The name of the organization that holds the ASN.

stringasn.domain

The organization’s website.

stringasn.route

The network prefix the address belongs to, in CIDR.

stringasn.type

The usage type of the network: one of the values below.

The company4 fields · company

stringcompany.name

The name of the end-user organization the network is assigned to.

stringcompany.domain

The organization’s website.

stringcompany.network

The prefix assigned to the organization, in CIDR.

stringcompany.type

The usage type of the company’s network: one of the values below.

Usage types8 values · asn.type and company.type

valuehosting

A datacenter or cloud provider; 200M+ hosting addresses mapped.

valueisp

Consumer and business ISP space; 1B+ addresses mapped.

valuecdn

A content delivery network.

valuebusiness

An end-user organization.

valueedu

An educational institution.

valuegov

A government agency.

valuemil

A military organization.

valueunknown

The usage type could not be determined with confidence.

[ 04 — USE CASES ]

What you can build with network ownership data

01

Bot detection

Flag traffic from hosting providers and data centers. Legitimate users rarely browse from AWS, GCP, or DigitalOcean — but bots and scrapers do.

02

Ad fraud prevention

Exclude data center and hosting ASNs from ad campaigns. Non-human traffic from server farms burns ad budget without generating conversions.

03

Automated abuse reporting

Look up the abuse contact for attacking IPs and fire off incident reports programmatically. Reduce mean time to report from hours to seconds.

04

IP lease attribution

Trace leased IP blocks back to the actual operator. The WHOIS registrant is often a holding company or LIR — lease chain resolution reveals who's really behind the traffic.

05

B2B lead enrichment

Resolve visitor IPs to company names for account-based marketing. Follow the lease chain past the ISP to identify the enterprise customer actually using the address.

06

Carrier-aware experiences

Detect mobile carrier traffic and adapt content — lower-res images on mobile networks, carrier billing integration, or MNO-specific landing pages.

[ 05 — PLANS ]

ASN on every plan, company data from Startup

The AS number, its name, route and type come with every plan. The company behind the address, with its name, domain and network, is part of Startup and above.

Free$0ASN only
Startup$50 / moASN and company
Business$120 / moASN and company
EnterpriseCustomASN and company

Monthly prices; yearly billing is 20% less. Compare every plan