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>

SEE ALSO

       The asn project homepage: https://github.com/nitefood/asn