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asn

asn

ASN, BGP, IP reputation, geolocation, and network reconnaissance tool.

Runs as asn|macOS, Linux, Windows|github.com
Open form in Otty otty.toml

Command form

ai-draft · 2 tasks · 11 fields

Look up an AS number, IP, prefix, hostname, URL or organization name. Server mode (-l) and multi-target stdin modes are left out.

Opens the form; the finished command lands at your prompt, unrun
Run in Otty
otty gui asn
Look up a targetExample values, fixed in this page — nothing here reaches a terminal
Basic
Target*
string
Detailed hop info
-d
Advanced
Monochrome output
-m
TasksEach one presets the form for one job
Look up with AS path trace
targetdetailedmono
Search by organization
targetorgmono
ParametersOnly these flags are editable in the form
Target
AS number, IP, prefix, hostname, URL or organization name.
string · positional 0
Skip AS path trace
boolean
-n
Detailed hop info
boolean
-d
Search AS names
boolean
-a
Find transit/upstream ASes
boolean
-u
Country CIDR blocks
boolean
-c
Shodan InternetDB scan
boolean
-s
Treat as organization name
boolean
-o
Monochrome output
boolean
-m
Compact JSON output
boolean
-j
Pretty-printed JSON output
boolean
-J
SourcesEvery flag above is checked against these
help
$script_name [OPTIONS] [TARGET] -t (enable trace) -n (no trace|no additional INETNUM lookups) -d (detailed) -a (ASN Suggest) -u (Transit/Upstream lookup) -c (Country CIDR) -s (Shodan scan) -o (organization search) -m (monochrome output) -j (compact JSON output) -J (pretty-printed JSON output)
helpmaster 2026-10-27

github.com

Before it fills your prompt, Otty checks the installed asn against its version. A form that does not match your version is not offered.