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