Dead-Web Index · domain

www.columbia.edu

How www.columbia.eduresponded to each probe arm in the latest run. “Dead” is derived from the evidence below (DNS, TLS, HTTP status, redirects), not asserted directly.

Reachability (real Chrome TLS/JA3)Blocked

Reason: forbidden
Final status: 403
First status: 403
Scheme: https
Redirect hops: 0
Parked: no
Popularity rank: 3,392
TLD: .edu

Final URL: https://www.columbia.edu

Probed 2026-06-15T21:51:28Z

Polite bot (honest UA)Blocked

Reason: forbidden
Final status: 403
First status: 403
Scheme: https
Redirect hops: 0
Parked: no
Popularity rank: 3,392
TLD: .edu

Final URL: https://www.columbia.edu

Probed 2026-06-15T06:26:33Z

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