CF1760732985580-tsm20251017082432

MXLIST.NET - dhcp21.cs.columbia.edu

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dhcp21.cs.columbia.edu checked at 2025-10-17T20:29:45.568Z 159ms 22/22/22 100% R:11

AI analysis

dhcp21.cs.columbia.edu points to a single IP: 128.59.19.221.

Perform reverse DNS lookup as well as normal forward DNS. Check Autonomous System Numbers (ASNs) and BGP connections between Internet Service Providers.
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ADMWSCD CF johedugfp 2025-10-17