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: Thu, 04 Dec 2025 09:11:14 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=8CFA3322580C5C14AE4AB26222965DEA~-1~YAAQnGAYuFg3H6qaAQAA/Eah6A8CJEs3+IfogE26OuHXIljUScwWRZWZZ2KPOcSdrJKNCRy4yJwF06fGPINFUSj4EEjboWhxFG/gKF0+1ciorPsn7aABHTnxKqLat+dVaxAYbtZcZzicQGal4jZUfcF8SL4DkfBmcIkg97RU35uTlohO4AXfC6A29L09Hite/1mK9x77mYoD5RVB6s48jInwbn2x+hTvPLEvqFoh3mEfc4WLdaOeB8t9Yz4dgdn66CL76ruCyDJbrDSMGp6XH5lFbmaY5m+mpD24nySkREYDn3szy/ptfKfj7M6eWo0a7hcIL1CtwOBZ6EJe6pRAhy2Rvi39qBbxfO6LDS2S65omN+5G+/XIPYuZI4dfb1tSy3SokF4EHHyGYeahbFUdG3sU/WG5OvdgOojRbD+wo/e/LXcdgmN0KdXTozg1D/dFon84fDPRXmW9Xjk=~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Fri, 04 Dec 2026 09:11:14 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=8A9C7C68A27F7C42179CC656C80F557D~YAAQnGAYuFk3H6qaAQAA/Eah6B7IDHiJZASB43zAs3ZxudpYt3o2KbT+m9pSDASja1YSS1K7YhVBC6CJ/8hGsyhcPTqJLSw47QBjtttzu0mzVHBEmIGtp7BGVoN84XC1nQd9Tix3Lo1lj4A+hGp4f+VQj/yt3jn6W+u0mzm0W6GFJDhayrmBrktAmOkET2CiWW82BYKW7ekY5te4R9BObmyOTymcmEQeZTlE0cSm/NBjN2mkrydfLpwjSJnE+PULhy9/XObHODnTERiPsDwjZ7/j10xLUNmPxIeiIsqAFbwBy9bkV6188l1A72R8Hrb+aD8YqSisEFk/+olEQe6NdbCy8+LOfkSNPCI467hE3Y9AsGsRwRu2IHu8jVQ4n8mmSA7IrNc=~4538693~3617091; Domain=.nba.com; Path=/; Expires=Thu, 04 Dec 2025 13:11:14 GMT; Max-Age=14400

HTTP/2 200 
x-amz-id-2: FZSr5mAi1zofTMticZU51yrQMPKIUG/rPjA9jmoir7cKr0dCQXHsP+UwDgw1mJNUHQV+k6Bt2LM9dFXqKr1KCzygaRnia2oV
content-type: text/html
x-content-type-options: nosniff
x-frame-options: sameorigin
x-amz-version-id: 7yr7l6W7XA7r1lBVpBEDjoqoo_MEx7gi
etag: "3cea1128ce62b63acb42612022f4f27f"
x-amz-request-id: 3T3BQ4DEQ2CVCX7J
x-amz-server-side-encryption: AES256
x-xss-protection: 1; mode=block
cookie: nbaidentity=; cms-dev=; nlhasnbaid=; nlhasnbaauth=; region=; postal=
cache-control: max-age=30
date: Thu, 04 Dec 2025 09:11:15 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=64E2B21EE834E3DE962A958B57F03C92~-1~YAAQnGAYuF43H6qaAQAAgUeh6A9uQzKW0GNXo2nUzkXu7u05Hdm1061bsMhxcN/utu3+P3DNgZvftToNjoTtcCeGDq9h6Gpqraqx+DEx6VaOcCy7RfU6SO1ynJEmKS4EPZ0HHBwUy1CIcrwYqoTJJkneG2taFDc5602pwkyUBXMUcA1td0N9klekEyy1e3IRxqfURA91gGRTZ8xXBNpeUAi6rLItxps2DidsgR9hNc4NhlUJo2y+Mk357ZWA5dRgdAXq+CBdqcgRWPHZGT6msNrOWU5xHhY1pXn0pYOeAD9wAvhYVumCXYrWm+S2MjYLSiIRgFnfNLIAMsdeFqJvnRcgGF97ggqd5f4oWcvKO7HSxRNE6VuFMcnX6aPnKIEszeohumV7uF8yynuhPFaM6IcHidRYKrsQueSzOLzwAIdIf6mOQSWW5n8QkZWCdPJdSggvyrobvaUl+8A=~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Fri, 04 Dec 2026 09:11:15 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=B079BB4A668340BC0F3436B298858EA9~YAAQnGAYuF83H6qaAQAAgUeh6B5Ck3ks4aICU/Aq8W26vNzeE8wQXDyqqJsLaigo1sPbUgnQtaeCJAnXDsLeLoxBkjztXOF8H2Zcg6h6YKk0pcO045yiU8trjmaTSpEAfjOCiluBfVTG6rxUh5RdiTQeGzQiwII7NNTHz4pgFEZADvGhtc4r6uadihyY00qz4pRwz7tQrAxv2/9U8S9ktmLUCyy08+AG+RnTa8tBxUS1qcPhja9CSSMFpEVIxMYHItD57deKXC7OFsBFTIrkXH2OPQIgprLJkq4aoCV0rn2F1bgauQJt53Q6mJeEfAs5iSxdEsUsjfeoHz5eW5LD6AO9gqqPoBBzw2kmzxT1dFpYsT0yNs5QRsQYKok7Hmzn1EAITDo=~4538693~3617091; Domain=.nba.com; Path=/; Expires=Thu, 04 Dec 2025 13:11:14 GMT; Max-Age=14399