Free · No sign-up · No API key
The NOC Operator Toolkit
notoolkit.com
A small, growing set of fast, no-nonsense tools for network operators: the ones I kept wishing existed.
I spend my days in a NOC, and I kept hitting the same wall: the tools I needed were either buried behind rate limits, hidden behind a login, or had quietly swapped a free tier for a pricing page. I didn’t like the tools that existed, so I made my own.
No accounts, no keys, no limits you’ll realistically hit. Just the things I reach for during an incident, built to be fast and to stay out of the way. More will land here over time.
Tools
Pick a tool
Everything here is free and runs in your browser or against a free public API.
IP → ASN Lookup
Map any IPv4 or IPv6 address (or CIDR prefix) to its originating ASN using longest-prefix-match against a live RouteViews BGP table. Returns the matched prefix, ASN, and RIR WHOIS.
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ASN Lookup
Look up the registrant details for any autonomous system, plus the full list of prefixes it currently originates in the global routing table.
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JSON Formatter
Paste, validate, and pretty-print JSON, or minify it. Browse large payloads with a collapsible tree view. Everything runs locally in your browser.
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XML Formatter
Paste, validate, and pretty-print XML, or minify it. Browse documents with a collapsible tree view. Everything runs locally in your browser.
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