Nmap scan report for www.gradelink.com (104.16.150.108) Host is up (0.0011s latency). Other addresses for www.gradelink.com (not scanned): 2606:4700::6810:976c 2606:4700::6810:966c 104.16.151.108 Not shown: 996 filtered tcp ports (no-response) PORT STATE SERVICE VERSION 80/tcp open http Cloudflare http proxy |_http-server-header: cloudflare |_http-title: Did not follow redirect to https://www.gradelink.com/ 443/tcp open ssl/http Cloudflare http proxy |_ssl-date: TLS randomness does not represent time | tls-nextprotoneg: | h2 |_ http/1.1 | ssl-cert: Subject: commonName=www.gradelink.com | Subject Alternative Name: DNS:www.gradelink.com | Not valid before: 2025-09-10T04:52:01 |_Not valid after: 2025-12-09T05:51:04 |_http-server-header: cloudflare | tls-alpn: | h2 |_ http/1.1 |_http-title: Did not follow redirect to https://gradelink.com/ 8080/tcp open http Cloudflare http proxy |_http-title: Attention Required! | Cloudflare |_http-server-header: cloudflare 8443/tcp open ssl/http Cloudflare http proxy | ssl-cert: Subject: commonName=www.gradelink.com | Subject Alternative Name: DNS:www.gradelink.com | Not valid before: 2025-09-10T04:52:01 |_Not valid after: 2025-12-09T05:51:04 |_http-server-header: cloudflare |_ssl-date: TLS randomness does not represent time | tls-nextprotoneg: | h2 |_ http/1.1 | tls-alpn: | h2 |_ http/1.1 |_http-title: Attention Required! | Cloudflare Warning: OSScan results may be unreliable because we could not find at least 1 open and 1 closed port Aggressive OS guesses: FreeBSD 11.1-STABLE (92%), FreeBSD 11.1-RELEASE (89%), FreeBSD 11.2-RELEASE - 11.3 RELEASE or 11.2-STABLE (89%), FreeBSD 12.0-RELEASE - 13.0-CURRENT (89%), FreeBSD 11.2-RELEASE - 11.3-RELEASE (88%), FreeBSD 11.0-STABLE (88%), FreeBSD 12.1-RELEASE (88%), FreeBSD 11.0-RELEASE (87%), FreeBSD 12.0-RELEASE (87%), Android 6.0 - 7.1.2 (Linux 3.18 - 4.4.1) (87%) No exact OS matches for host (test conditions non-ideal). Network Distance: 8 hops TRACEROUTE (using port 443/tcp) HOP RTT ADDRESS 1 0.19 ms 208.76.251.177.rdns.ColocationAmerica.com (208.76.251.177) 2 0.56 ms gw.mcom-colocationamerica.com (208.64.231.81) 3 0.66 ms r2b4.n1.p1401.lax.multacom.net (64.69.46.11) 4 ... 5 0.99 ms be3271.ccr41.lax04.atlas.cogentco.com (154.54.42.102) 6 ... 7 1.43 ms 141.101.72.31 8 1.01 ms 104.16.150.108 OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 36.26 seconds