Unmask the structural backbone of the internet. Identify exactly who owns an IP block, where they physically route traffic, and who their upstream providers are. Deep Link: /tool/network/bgp
What is the BGP Prefix & Peering Map Analyzer?
A cloud-proxied OSINT parser that aggregates global BGP (Border Gateway Protocol) routing tables from major IXPs to accurately document IP block ownership.
How it Works under the hood
When an Autonomous System Number (like AS15169 for Google) is queried, the backend initiates parallel fetches across global BGP Route Collectors. It extracts the raw network prefixes (e.g. 8.8.8.0/24) that the server physically broadcasts to its neighbors. Additionally, it maps peering adjacencies—showing exactly which telecom providers (Transit) carry their multi-gigabit traffic across international fiber backbones.
SysAdmin & Security Use Cases
»Identify the physical datacenter/ISP hosting a malicious IP participating in a DDoS attack to send abuse reports.
»Verify the successful propagation of your own ASN prefixes after migrating a massive BGP-routed corporate network.
»Perform deep-dive OSINT investigations connecting shell corporations to parent telecom monopolies via shared ASN infrastructure.
»Enumerate the entire IPv4 surface area (all prefixes) of a target corporation during red-team reconnaissance.
What is an Autonomous System Number (ASN) and BGP Tools Routing?
An Autonomous System (AS) is a massive collection of connected IP routing prefixes controlled by one or more network operators on behalf of a single administrative entity (such as an ISP, a government department, or a tech enterprise). Every AS is allocated a unique Autonomous System Number (ASN)—an AS Number—which is crucial for networking between different networks using Border Gateway Protocol (BGP).
BGP is the protocol that routes packets across different Autonomous Systems on the global internet. Network administrators and security engineers use professional BGP tools like our lookup engine to verify prefix advertisements, inspect routing paths, check peering relationships, and troubleshoot network Reachability and latency across carriers.
Our prefix lookup tool allows you to input any public IPv4 or IPv6 address or an AS Number directly to fetch the network's autonomous registry. This lookup resolves block allocations, active BGP prefixes, geographical details, and peers immediately by querying live Route Collectors.
Typical Use Cases for BGP and AS Number Lookups
ASN Lookup & IP Prefix Enumeration: Retrieve all IPv4 and IPv6 routing blocks broadcast by an organization to map their threat surface area.
BGP Peering Audit: Inspect upstream and downstream network neighbors to verify peering reliability, multi-homed ISP redundancy, and route leaks.
SecOps Threat Intelligence: Geolocate and trace the network origin of anomalous traffic, identifying corporate ownership and reporting security incidents directly to the correct network operations center (NOC).
Network Migration & Propagation: Verify global BGP route updates are correctly propagated across tier-1 carriers after routing table updates or prefix transfers.