BGP Information Lookup
Look up comprehensive BGP information for any IP address or AS number. View AS details, announced prefixes, peering relationships, and route history.
Common AS Numbers
AS15169
Google LLC
AS13335
Cloudflare
AS16509
Amazon AWS
AS8075
Microsoft
AS32934
Facebook/Meta
AS714
Apple
AS174
Cogent
AS3356
Level 3
About BGP Information
BGP (Border Gateway Protocol) is the routing protocol that makes the internet work. It exchanges routing information between autonomous systems (AS). This tool provides comprehensive BGP data including:
- AS Information: Organization details, country, registry, and allocation date
- Announced Prefixes: All IPv4 and IPv6 networks announced by the AS
- Peering Relationships: Upstream and downstream peers
- Route History: First seen and last seen dates for prefixes
- Geographic Information: Country and registry information
Understanding BGP Data
| Term | Description |
|---|---|
| ASN | Autonomous System Number - unique identifier for a network |
| Prefix | IP network in CIDR notation (e.g., 8.8.8.0/24) |
| Upstream | Providers that this AS pays for transit |
| Downstream | Customers that pay this AS for transit |
| Peer | Networks that exchange traffic without payment |
| RIR | Regional Internet Registry (ARIN, RIPE, APNIC, etc.) |
Data Sources: Information is gathered from public BGP data sources including BGPView, RIPEstat, and regional internet registries. Data may be delayed by up to 24 hours.