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: Sat, 08 Nov 2025 12:15:45 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=02F1EE9B726F121F2AB2619AF720F9B4~-1~YAAQj6bQF7OXpTaaAQAAFt1kYw76glvb9Dnm59CxwADSiFGfW/8TQ1vtQLnMCwaXmMlKVOp7IC0/5Qo0snUoT2dkhCtyJ4jyobmtlmyXSVHGj3o/YHC/wl6bYX/KEdQfsmOK2VoB73LMvSiYVrEmw9dzirWSvF347Zu5ZZ6NtXjFK5qw6PbTu/6i+2q6jEkGYSPDuaQHN68INtv+cnbbFfILtcwasdXPcCv8o0V4pltLl2YGsvdVGvGqYL/1D/wZrb/UvRXHdiWq5mDZ1YLu+dlAAixJ/UnuOTN60r5q0zCn+kNQkqKfZZHyk0aCeX6nINHPB4Ir4bvbylXsMBqs/Xg8MewJCbET1VBuyV7GdID839kROAay9j+ZolfVN6dYyjp9Rx15alxs9oOUsw1VYf0G2lpelFV5a3P4pH2s6s3RrqNsB5xsBdkbmnwGr4yR9Ja6V1ojBn32ITc=~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Sun, 08 Nov 2026 12:15:45 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=B8598C2E9CF218BF0B63199FC74C71AC~YAAQj6bQF7SXpTaaAQAAFt1kYx1GuT9dBNaD2LnRz5oe/azc2iwh03lxFGk5RUXP+a4/1Q+apqFPNWTpmn+MuEZc/ZtGz2sRMyd8N0srl23BoSqOtz3dsC6bYtuDY/JaanIbZ4nWWai26gKovtrahpRcSz1/bdvoLj1xs9aAGpI7N9AzdOPrrSWMy8FDhE2cPr6rGDd4ffai8/RJYLqw5xP/6YEmUHQ19JgumJl/Lmi945UyK6FhY2HUNLvxXzoGxwY0xaYL0jYfTi8yqXDvO+lYzVLPvwCQUh2stagUAC7zhk7dt3q/G/SHwVjltGlpVYq62kMCWZd/scmpslQU6So9gPBolfcqkmdDnGOm4AEySf200zgVXNbLgtJrhqdoyJVy5gw=~3553090~4273464; Domain=.nba.com; Path=/; Expires=Sat, 08 Nov 2025 16:15:45 GMT; Max-Age=14400

HTTP/2 200 
x-amz-version-id: RPl_.8_jxISSSX0Kyvv6T7_1.jtfbguL
x-amz-id-2: hcUs/BUcQFnL9i6PnuMbfe8bfYFPsMz2ktqOCNWmQpBb4Xm7j/1Nw97saYZPhXMs5UdwtC8JAa+BVu1juQbL7Q5y4QzNr6yKA4rrxuk9Vp8=
x-amz-server-side-encryption: AES256
content-type: text/html
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
x-amz-request-id: 0WB416F1S2D0QVPF
etag: "091652fce05b502230a3e696696265c1"
x-frame-options: sameorigin
cookie: nbaidentity=; cms-dev=; nlhasnbaid=; nlhasnbaauth=; region=; postal=
cache-control: max-age=30
date: Sat, 08 Nov 2025 12:15:46 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=B914DACA7A8F55CE179DD63C6BFDF59C~-1~YAAQj6bQF8+XpTaaAQAAq91kYw5sSvxGXQnqxsSB6WWz1xingeJRiJXDt9AgXFu+Xf5u+vuofnj4+3tcc/KmD5o7RHIiMFtX35yMUU3s+xfI9pLMMUEaB+/amLU7EbcWh0HOg42ydiBKMwL2yKalugdPQtM+XOLhQD+0hCz4VmJ1y8HO+qE78g0ZjIuXoL5JeMvUbqsGgfTNpYBK0pnVRpUy9rkBJFEw6ZvqVxcE72A7gUKF+BezmTRQr1PL6qfSUwN2bgSOABG/nHevPXHTTcwO+ZrmZ77xUhpsGPw4gI9HBumy9i/twpqDlpWBbC0eswBF2V/WnWZSQVbZg5QrT7nI0Otw3gtnLihMhrIARxGt/70b7HdZ4I4SC3dP3sCVMNaO3ayY9nt+Juybatyw4OHmV3S/irsLRRPw72vYRTkii9MQHNv1wY++bSK5X+2aA36rrYn5rfkxznw=~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Sun, 08 Nov 2026 12:15:46 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=4ED702654AC0A1382F18CB46AE0F2409~YAAQj6bQF9CXpTaaAQAAq91kYx05NfJRkNjlq282SJsc2zKRWwzMkzxKiYmFE4IXTAPOKz4i7EWEMjRgMT/v16YbmoleypBm0nPy4qFNn5/VriEVvQLb7z6F1ULNT/JiV8eB8cTHXVUbDwoCqOuAfgpqBY/t/5GOH1WGcQqxQU03XxrhCHAW+nTpq88kuBmoHW2ygLGR8tY49IqoqT6NLWcga8MxHz3hyV0o2HrkNYayhxL36+Oyp73ZU1M7mbhoGNMEBpDGK/WszjOQysQ52/iWpQBbrTA98Lghhu657WI7G20eLxD2yE2cClbULE797IaEowcOetZTwxJaddhmf7aMdFVIGYnAAFgXoz77JX914QHrhQuKWtx1wJj6vb8yOo5FjpE=~3553090~4273464; Domain=.nba.com; Path=/; Expires=Sat, 08 Nov 2025 16:15:45 GMT; Max-Age=14399