Dead-Web Index · domain

www.nsf.org

How www.nsf.orgresponded 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: 9,401
TLD: .org

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

Probed 2026-06-16T08:09:49Z

Polite bot (honest UA)Alive

Reason: ok
Final status: 200
First status: 200
Scheme: https
Redirect hops: 0
Parked: no
Popularity rank: 9,401
TLD: .org

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

Probed 2026-06-15T09:52:21Z

Keep going

Next steps.

← Back to the Dead-Web Index Does www.nsf.org run anti-bot? →