NAME

asn - ASN / RPKI validity / BGP stats / IPv4v6 / Prefix / ASPath / Organization / IP reputation lookup tool

SYNOPSIS

asn [OPTIONS] [TARGET]
asn [-v] -l [SERVER OPTIONS]

DESCRIPTION

asn is a tool for performing various network-related lookups including ASN, RPKI validity, BGP stats, IPv4v6, prefix, ASPath, organization, and IP reputation lookups.

OPTIONS

-t: Enable AS path trace to the TARGET (this is the default behavior)
-n: Disable tracing the AS path to the TARGET
-d: Output detailed hop info during the AS path trace to the TARGET
-a: Lookup AS names and numbers matching TARGET
-u: Inspect BGP updates and ASPATHs for the TARGET address/prefix and identify possible transit/upstream autonomous systems
-c: Lookup all IPv4/v6 CIDR blocks allocated to the TARGET country
-g: Geolocate all IPv4/v6 addresses passed as TARGET
-s: Query Shodan's InternetDB for CVE/CPE/Tags/Ports/Hostnames data about TARGET
-o: Force TARGET to be treated as an Organization Name
-m: Disable colored output
-v: Enable debug messages
-j: Set output to compact JSON mode (ideal for machine parsing)
-J: Set output to pretty-printed JSON mode
-h: Show this help screen
-l: Launch the script in server mode. See SERVER OPTIONS below

TARGET

<AS Number> Lookup matching ASN and BGP announcements/neighbours data. <IPv4/IPv6> Lookup matching route(4/6), IP reputation and ASN data. <Prefix> Lookup matching ASN data. <host.name.tld> Lookup matching IP, route and ASN data. Supports multiple IPs - e.g. DNS RR. <URL> Extract hostname/IP from the URL and lookup relative data. Supports any protocol prefix, non-standard ports and prepended credentials. <Organization Name> Search by company name and lookup network ranges exported by (or related to) the company.

SERVER OPTIONS

BIND_ADDRESS IP address (v4/v6) to bind the listening server to (e.g. 'asn -l 0.0.0.0').
Default value: 127.0.0.1 (IPv4) or ::1 (IPv6). BIND_PORT TCP Port to bind the listening server to (e.g. 'asn -l 12345').
Default value: 49200.

EXAMPLES

asn -l (starts server on default IP(v4/v6):PORT)

AUTHOR

Marcos Rodrigues de Carvalho (aka oday) <marcosrcarvalho42@gmail.com>