Dead-Web Index · domain

www.nsf.gov

How www.nsf.govresponded 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)Alive

Reason: ok
Final status: 200
First status: 200
Scheme: https
Redirect hops: 0
Parked: no
Popularity rank: 2,365
TLD: .gov

Final URL: https://www.nsf.gov

Probed 2026-06-15T18:08:53Z

Polite bot (honest UA)Alive

Reason: ok
Final status: 200
First status: 200
Scheme: https
Redirect hops: 0
Parked: no
Popularity rank: 2,365
TLD: .gov

Final URL: https://www.nsf.gov

Probed 2026-06-15T03:46:01Z

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