// server · asn
duke.edu ASN / Origin
ASN / Origin for duke.edu. Origin AS number, AS name, country, and announced prefix for every IP.
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duke.edu ASN / Origin
Origin AS number, AS name, country, and announced prefix for every IP.
Use this tool to inspect the current state of duke.edu's configuration. The data is fetched live and reflects what every DNS resolver and web client sees right now.
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Why ASN / Origin Matters
Understanding asn / origin for duke.edu helps with debugging email deliverability, diagnosing connectivity issues, auditing security posture, or simply confirming a recent configuration change has propagated.
If you're seeing unexpected results, double-check the DNS provider that serves duke.edu and any recent zone-file edits.
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How LDNS Looks This Up
LDNS queries are issued live against authoritative public sources at the moment you load the page. There is no caching of historical results — what you see is what was returned just now.
Server-side calls (where applicable) are proxied through Cloudflare with edge caching, but every cache entry is invalidated frequently so the picture stays current.