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/2 302 
content-length: 0
location: https://www.nba.com/warriors/
date: Tue, 23 Jun 2026 21:33:09 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=D12C52F198E4E8E063EA192518DC8CB2~-1~YAAQpCTDF9VKb96eAQAAmsFm9hBupLV4Gd/Oz/IkhESNOJRiRAKv9Gd4fHMPw0pxs89CWGPkkNoc7STpOF8arIwB0szNxNNqy8WzzqMV8m08Vq/IrGYzmM+ykO5FIB+x8hNNSl6FlnKobfagQOEL5WeZaUe+VmtjN97A2K1cCO7nd4nz+hjl8xJTuyzkIAhBFB/MdcjuZmIc1dI7Udw599A4fRUHscOwj5O1G0tFF5BAeGxmOByFZ0gzeEfoIn8ZAxVKRqEjvXMv+AuX04VICpNIwWfSAkJC5UWwdid24yqA1qfwbVCfB+/i0ShpCvx74JgR7nBjgK+ncarY+kvhCMo+D9zHiQT61NFBfTY0k0zA7Ed7u8p5Leq0uq2mPDCU5OiA58rjciA1l6GAdaox4TAJeY1KfLXHtuUvUbHXGkJBqvZns6ih0jozeF6p7KqabIg502xqiey3EMSl~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Wed, 23 Jun 2027 21:33:09 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=D79D47C63A9D215918A7835E306FD9B0~YAAQpCTDF9ZKb96eAQAAmsFm9gCvPi/awKx2QM7Ym8IWipIA2nEAsnatEfRXajuQVrKKyuG5pYutNpZOFE9LpiefSYNCpjpZs5oMljUECeIaqYrxybqnq67yx2NLkGR5Dwc/dLb4I/mCskcJNs9Lz8qfT20MsYCxJ/FICDx4s7Lls9QkTGR9bIDWLChMADRdgFRDtaL1zlbjixWYigqBpwyrujzyaohTALmVzC/RIrCuYNZVIgqIF3pxCObzVK7Vt0wpSAj6xtx2d4hczP6+ZD/4Pc6t6hdEMmlspOEIHCaGyfOvkkJuz/S5QNs1KZEVy0y/94MO0RRaE2xWjNKuQRTWOQ0LuBBgN7CQZWQJczTkTlSsXVZAPYyMZ/5IOfv+SYG0qpo=~4538934~4273968; Domain=.nba.com; Path=/; Expires=Wed, 24 Jun 2026 01:33:09 GMT; Max-Age=14400

HTTP/2 200 
x-amz-server-side-encryption: AES256
x-frame-options: sameorigin
x-content-type-options: nosniff
x-amz-version-id: lGALz1lzeJHglkfrFBGX8YRtjbRth01v
content-type: text/html
x-xss-protection: 1; mode=block
x-amz-request-id: KXZHVZ873G924S1N
etag: "40b1818bd8e92cfcd582650f5f3f0e55"
x-amz-id-2: RvhGizEV3ZIdwkpHChUufHdXK06o4n+tK1WlDKTYCJW6EZHAj6s0XC+fbl5SRLDv7iIXV6+Rdt8=
cookie: nbaidentity=; cms-dev=; nlhasnbaid=; nlhasnbaauth=; region=; postal=
cache-control: max-age=30
date: Tue, 23 Jun 2026 21:33:10 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=20EDFF3450E0BB38144FE8131232AC5C~-1~YAAQpCTDF91Lb96eAQAAOcNm9hAltME7jw5glew4ySGGNsOEQi+fYivazYtJqz2Qjwz6OC6s4iOFDJ/6KwCAx3qqxsRpoT86A6WeXaYfnPD1NksZCSO44N2+tUHhmGITUSf1sEXR3hHaAJExdJYgGSPB/kSznvICGyDaLy4EuNQJMDFgDYzMK2POqjHkjGSnH/FJ4fSft43dUlHUWqj29l0vkKfWaZLWpLi5DYn9kMnDXdNSE3/uJ19CweRjN9Th4U6Y1DHbTHd6l/gGWteY00p6iUk6YdIXceD7zfNMNOOMAovWFNxscId8jO/Y2+mfmb6xDcDC9xroXzM2rg/1c/S376EWzp5J3MuQpMlL7Qyg7rzOJ7+vGKY9Q2kPNvZqoosRK46W+DQn4SYgQXfcY5gn/FXNZtnc3N/8HeaD6L8yj0PyPfjBgoZBM0A2A4Hp5Z+ISoR7IrxUJqNE~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Wed, 23 Jun 2027 21:33:10 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=EA9BB48BD02D2AB5F26F8CBE71B8BED8~YAAQpCTDF95Lb96eAQAAOcNm9gDXozdwAlrzCrxnG1syT7LUjDyVC8QlLXTVxphU0hTeFhiECc5lhinQ9Z29uSRZv24WNRLIAPA9kOa9QyBO5ZBjhF11zxHLb+tbi2Ry8Hu4v/RQdK9rHtBsh4wrRv8Sdp1xl08upS17gBO8fqQtvyzE4hMzOOJFZVAZJmWOtBGliuhSWx6RxguVfkkhXCbgnTesfuI7TAUjaq6jKNiVtcubTpTr6VVIr8hNxFWOudGIp7CITdfGxUpIgLv5xpCrVDzLTwTSFY5Wqv0KCRFXbKQ5SukEPsJZstnGxUasbaWBGkmuuwsLjjzBcTsjeS4ionAPAN70ZHIltWvTDbjAhUwc+EAEVf0X0wg5pnnx7d6cJ90=~4538934~4273968; Domain=.nba.com; Path=/; Expires=Wed, 24 Jun 2026 01:33:09 GMT; Max-Age=14399