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: Wed, 03 Jun 2026 19:05:34 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=EBD2E6B02483FBF6BA608634FDB25287~-1~YAAQJm4sFxFQlnKeAQAAOXDgjhDZin11xfHIJakJvF5hAT+MrER8QVqRTdZTG8rxbNyVwZj7s/l0p6FHe7E3wj48827gu4eZWQZ76+AJbwGEZG8KSjxGRD4LJa8PVyl0W5br7qlv57TpFdWyer2qPfn35gRlb1UuOqtChJGp64X0gcUOouz4FEvxc4Jko3eXPyUo1yTQaf7eRDmdmX/3MHd49XDi3jZs7fOenjadHUzMPedzNzJDZpRcjq6n7MaFGJW3ygo0Vz/13I1tjk6bOUVUOLlugMEcHAYRc9X5pSM9jliRiUKAquz2OQbc6AEyBF99lMK4dE+GYbX/hcoSVvaAYTWXNAFn5p1RTcCPKJtsnPWV6s/8To0TxAITtIkMHDemk5R4blXJqI/HgLAS4N5AOW7zWnHbnACRffg+jMuQ+Iw4FkVgIINKFNTjkHflWn61okeTOCf2pflx~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Thu, 03 Jun 2027 19:05:34 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=DDE83CD8F64540BA17F39182E20E154A~YAAQJm4sFxJQlnKeAQAAOXDgjgB33iU450jP41UE2IfrxTCbTq39e44L63Y5e3lyY/gsnh3vMH4QcorY3hZnKxXg+2wrnFFp2zsLFDFvtzjGrIiVxpcshTZ96xcHfXWAI5PRounLyPg6IZD7/hwaJC2gV0AjgDHyif1pS01QeSCYLWtUZ7RUeqqq9yM5MRztv3xWdLx170qUshW8lQN2dUrZOhGnEYFbRfVftvDPO0rEUAjNZ/+eaTrbBqNbFJjBrsUhUQ0xbz0PHaIZ0cBUinQBDXAYD/xlER6QRl0+JfH9Dm6++cvIOAg1Iv2snhfnd6I3CfZLI9SdLFo4+S7Ws4oVJVVkpE+0ijNQKhIQhhcYtVcYZrFx3pfYkuZ3x4WhBEvxk4A=~3490869~3556921; Domain=.nba.com; Path=/; Expires=Wed, 03 Jun 2026 23:05:34 GMT; Max-Age=14400

HTTP/2 200 
x-frame-options: sameorigin
content-type: text/html
x-xss-protection: 1; mode=block
etag: "d22464fbce389e1ae5be17d2c83d1766"
x-amz-id-2: dc38Q4v5aJVgtov4fU/pXDMInKAkQyppyLJK3r2mNj7Imv/noRhbCiI9detSagMTsb6E7MPCfCvBHPuAmljHSrv//CsirWSe
x-amz-version-id: 7b2LcmuCaky3c4.hUjQUn3jEKx8qSOdd
x-amz-request-id: EPZSVT2X959009TX
x-content-type-options: nosniff
x-amz-server-side-encryption: AES256
cookie: nbaidentity=; cms-dev=; nlhasnbaid=; nlhasnbaauth=; region=; postal=
cache-control: max-age=30
date: Wed, 03 Jun 2026 19:05:34 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=8920879606BAAF07184D3193DD040BBF~-1~YAAQJm4sFxdQlnKeAQAAwHDgjhBjw6+rIAQVv4N9eLhjX2Nr1GtT7UfsOTYCBp58dLloCUNMNtsbA/RxIwVZCHitfYrCYwf2w0rE3kP/5mJ+JCwCG4nQrLIgvdUTLPlRlFlAH5gG2sOWReOSpF6hZ0HRlGvrRApipeACesg+HyuYb5nInlo0bPyPA6IqDmPUDoARywP9HfBoO7zd0HYTsu/vnSCmvWvaWW1EFpv7kcMFJNTYYFVSnZGtBrw4kgb0SEGBKm022peZbs/itNEzx1GMAbkFjZLrMWDLEVdp8XTzWVWWv3BbUym2Z02MvqdjXr8eql4+rwvXhY8kCPq7sOMf7WjvpzQreDt04rKWqjpjBbJf33Kle8h9iW2kicSOM8HN41AE83Jv+Jo+LxCvGlrEY+dkn3sMq1nbrWQy9TONjAhD4qEjr1ureOeKX2t0fBUJmgjwHRMLCuuc~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Thu, 03 Jun 2027 19:05:34 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=023F6F42EE5EA1247BDC89441A628271~YAAQJm4sFxhQlnKeAQAAwHDgjgCTQZtJGHbAIEd03eNSAwY7JzYKxC9FG0sWeeGt50JeksPbvLQCV2q3Id0cRiwswgTzj/neERLlCOU5+pcmmSYzhy9GU+p2AysHbeVGJ1+qn7d+T4acOSbe+kOCF3dgZn+OlfZm9kw9xRkk4ZjqOIV7C5RcIUoXRWvFRX720QU62LnuiNm+g8wnGCpDw7htnqHsr8KFXc0DAa5BuLqEG7peGVCz5Tcdy7jbLkSrrGh9glf7qqgQssYTECpi5xI2nAL+lYccpTTFljleFt0yxM/Msaaqh+agD8GRbSFM+jhbbIF/0zTCOz6QA4MIqGbAg9As+sp+u2FV5F4bZHGcgbVDHAe2zkgkC2MBL0pwhXIsp/U=~3490869~3556921; Domain=.nba.com; Path=/; Expires=Wed, 03 Jun 2026 23:05:34 GMT; Max-Age=14400