Find the Web Server that a web site runs on

This program detects the web server that a site is running on.


example: facebook.com

ERROR: Web server not shown in header.

HTTP/2 301 
content-length: 0
location: https://www.nba.com/warriors/
date: Sat, 14 Nov 2026 01:05:45 GMT
x-frame-options: sameorigin
x-xss-protection: 1; mode=block
x-content-type-options: nosniff
strict-transport-security: max-age=86400
set-cookie: _abck=0B40A0E76C257F3B317DCE016398AA45~-1~YAAQihMoFzXGWdKhAQAA5cmW1xBGFVIoGuxh4lc1HG4BJGVlmWqk3jd/X8tYCiv3bBOQFRUrtnd/641vpyBz9PDAD5CbbpnICwTbUKljoVjInd1XkKlHCXYxewGR6DXEg31QtbdSACtWgJg4zBF8JVexPLL7u8Py+i97pnvVG1dtJi8v8j+/c8WtN8St6thdyX/ggnmvZ4316nyLhVGtZn6n9psGgcoHLETfwyWNQYEFD8s9GEwmwvlg4owQW54x3FLAJyGLAMH2CvJukFZVTIRzT9Zrs8us+VLGDdkobLI+lbYuneYIgrPltYTfIabIHB+2Hj+zqY0dL3J0rYgFhuIHFbfbuCmae420S7n7xDq4RPMxpGbqKZ5fQRATvs03wStjE+I2U0o6CI8NrA/jfmEE2RQ1yXV4dBdPVacz/8R+TELBPaeMwfK5lyik6Ma7cyrx/+QvGEPysVg8~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Sun, 14 Nov 2027 01:05:45 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=14CDA59D8F99AE79A6E8E9D4619B63E9~YAAQihMoFzbGWdKhAQAA5cmW1wH1t0xRdvXNh/eOl2juc7T9WX8D/QmEPzPtAzy+jEwu0ith8q5o7BUNJFC0vNqtyIzg6ljdF0sv88gpimVjWU0LmO8DlKeOA2DRqTOXiQ9tUJcbK38jNy21+2a+PpUXd5XdUBrAjNI/j79K41I3M/0RLq0T9dArNzCKryphRIszywPU5QoYrumd8HBMA3MB41UKZUnKExuOojYeJjFfEfoEm2U0hM1t53TvPUYxEQm9fCPVOWdOUMnKCcWOR/u6fJTdJ1r5dpRKZugVOIT+oTMLh6AVkhV/L3JVMjqQFRtbgT48jBda6zBAX86JiwMqHEkUBuZsYn053AWd+yH4aYGGcdGoFWfb79REWCZnWIujFTE=~3290950~4277554; Domain=.nba.com; Path=/; Expires=Sat, 14 Nov 2026 05:05:45 GMT; Max-Age=14400

HTTP/2 200 
x-amz-version-id: uo3H1GmJjC79u7jMHNRUbtBtjq3ZbliT
x-amz-id-2: n5t6pVU85rb1OAX9AJL5174etsn14ZsqynY8wNBkewU7iyNwtMYIniLr4IzJV57Xs2QP/g5Hwo4=
x-amz-server-side-encryption: AES256
x-frame-options: sameorigin
x-amz-request-id: 6H4R92E0W24RV2B5
content-type: text/html
x-content-type-options: nosniff
etag: "d931652ec5ed9a3fb453f6ada7ea5c30"
x-xss-protection: 1; mode=block
cookie: nbaidentity=; cms-dev=; nlhasnbaid=; nlhasnbaauth=; region=; postal=
cache-control: max-age=30
date: Sat, 14 Nov 2026 01:05:46 GMT
x-frame-options: sameorigin
x-xss-protection: 1; mode=block
x-content-type-options: nosniff
strict-transport-security: max-age=86400
set-cookie: _abck=2D9C90856AA7482CD6745D3655E2EA47~-1~YAAQihMoF0rGWdKhAQAAEcuW1xCV4hFRzskJE3L2hkryU0+Hc1zqk01urz/Z7qxk8YGQ7JjwT4w1pScb5//SSpmWzyJ5mvjMwLVp5YY0ZV6PbclPh50ptG3oYCrkPSJInNS8YUCuVOvw1VL0ELzQXE813B7Mw1Soqp6Wp4nQ/m0dj670gsk7TCOCsCVg94vyC0bQGa7Df/HanYlsFMYsdkYZSSY+56ihfEDOamUuZt3PNcoMUwYoPVcwbdhzJjRSufn/Nc3lEyiSX1jSTc6LaDPAmv7GJvqiUjtXv9yUerEmu6NUTaYp7oE6xYKQaB2hiAE3yGCx37NKR8q5NbitSUcIDe1WsLiPIR13izoYyKKc0VttD8avz/ZIGyoencVe1sn5UnThT2xXyc5mNKO+3qpSBF8j8GB2L3bucwwxEt6SIUb2ejHmw5k/N09tq3rmmRGMX07GWYOggVD1~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Sun, 14 Nov 2027 01:05:46 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=EA6253551FDD7CB4C8B6FEDECF791582~YAAQihMoF0vGWdKhAQAAEcuW1wHc1vyL30bZZCD98uy+BEJPJuqhR7np7IeLDKqnB3xPgl2q65zvh16Irh7YOQWRbQOfQrzBiUA7in+eal/ELTX0KI/ja0bXKhfSjGgAJKgTWb2AFOspJ5IkpMpHZuUhRBqaYJvqofN9Ei8eMtKRw716kMhqKn1nHJ3qSBphJ7IgJEYITpfbsRZEe9B3CR9xYMuNat6tsNFPuBvIQlyw59vYjuthIM3OcDDugDY47A6OKyOnbhf3eOHEBBo1suiZOGMfxnklnc5sGIJtsk0JbElm6uhEB/He0RScib9CzEd37J8NErVJBJQzCirmxwVQ9ufpO/Ew3OBEtIZ+oKcXdiuWW4UATcozh8WpM/GwJ4IVVSE=~3290950~4277554; Domain=.nba.com; Path=/; Expires=Sat, 14 Nov 2026 05:05:45 GMT; Max-Age=14399