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, 16 Sep 2025 14:08:15 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=082F4A975BE3CEF8CBA601EB25C66AAD~-1~YAAQiabQF75pik6ZAQAAyM7aUg6KBxiRp4Acxr2rNOhrLx+6/+FCWfQFEF+LFZVA1gdK9DqmJES/pDZxjQXzBetclWKBdKy18D+VPU1RZIcgeYc9KeVhnlKbWhbiAadHMiU0mEsshHgxiXlXJnqh9s/nTzycumQw7LCBXx61ZulrtpHR7HXd3N3B31XWxE4ldWXwjusbT6l2007FrbUtv2aYDEvaKDMfoF/XnKJSMK2CfPzM1Nj0YmSdRDK5cfQvglHGboCPUUPglDBfD9dGeq7lBoDyw3KV/X5HicxtEmnvBHb3fFTbYC8mNXAJ/Tj7KZb7j7j5LzcfNOF0O4Lwhv2/eGV6ahuw+gwf/GWjvFEOWXFrvDg88JfoNygWmC4KTPaVngmB6TQc9xmB8U844quMKx+dQwIS/so6RhJun23OvvMzFNzaCfFCpNutvymfKGovgPPo53aaESY=~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Wed, 16 Sep 2026 14:08:15 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=4C2F5C1805445D56E44BCAB12E4A6DBE~YAAQiabQF79pik6ZAQAAyM7aUh2puCY12Y1DjM+Are/CuGTF9BFzU94pmAYPOIo0vxt/uVTeTVjuEKcoMnLPW6P2r/JnyPhPUWP8ASgt2wpIYv5FizfyqjVKkswWPLQvFAZYcLZXluBrF+hP02HZE5yjawGMPJDKg3yD1cfA6XKt6LdWoOYZy2FDjXtFXCoO28YnVrWgnJgM+TAyk9RBNCZ+K6AyPkbE19vNCtt+4ueYF+HLvD+a6b4/gR3cG9aVuAmyJZsn6+Izk403FhNC1Pkgp69hsXxVt6unQH/f6Vkej/GAbRqx/InEcqpzP5TfM3A18jW/kV+6cN+wT3xClCSttPe90dDgFh5CovoPaxy7y7O0V16nEM2lOYQDzjmGSuKc+tQ=~4276787~3687481; Domain=.nba.com; Path=/; Expires=Tue, 16 Sep 2025 18:08:15 GMT; Max-Age=14400

HTTP/2 200 
x-content-type-options: nosniff
x-amz-id-2: hkgFv7YrZ45q9Yuk+BlLxlnGHeSyKCHZKfrZNWto8ghoZ+JzFt2Ct9NIUN38ITqi1mCYUWKDOa6SsN0Dd9UCbSHm/ClTbe7u
x-amz-server-side-encryption: AES256
x-amz-request-id: 299ZXV3V5E587RW5
x-frame-options: sameorigin
content-type: text/html
x-xss-protection: 1; mode=block
etag: "dc4805e8168219fd951e53de605ee3bc"
x-amz-version-id: n3_Es7DmwuRnh2ObIE1Hs75ta.LZHR.O
cookie: nbaidentity=; cms-dev=; nlhasnbaid=; nlhasnbaauth=; region=; postal=
cache-control: max-age=30
date: Tue, 16 Sep 2025 14:08:15 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=55723EC06AE1B2B3832C1766130D6EEA~-1~YAAQiabQF8Vpik6ZAQAAJs/aUg6sfzgb+EGI9x7pCsluEc3nR0bIRAhGHNinSqY93wKQS+H8IeD6PwDX+/PH1l1bS791h2GhfJ+ZeYZ+7q/0Zkny/Xol10NcpyC3vhETNDwpQ9U1oYI1cq8pxh6Hyqs5zSIyBiX6asF4B52ctWws1e0CrCgl6GQpZdHS2Q7/FEG/+7Q+sMnbiH04gOhtmbGhaAcaYdjGwkM4A3Cg3lE76HeVLa9wnqA5EWT2gK9ddZFYpRWQPb/+Wi/L4tF5qYRPfnzDdNY2szeKZoD7AKAlvxtDxuv3GjREv6XTb4XGZHkWayZUSCDbqsb79m1Ih6QsT/suAAwNtLmqcAid+wqc2ao9Ulrn5Hn7RGbY6cqgGt7LJdR+p4DcONPVEa+OonbKHTiTRPuOTWqoCzfKwjlPNYk4ePADqj6wlkjWBFMm6pRDhAqDTCGjE5E=~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Wed, 16 Sep 2026 14:08:15 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=CB92D1BC6FFF1E11C74C67368132F639~YAAQiabQF8Zpik6ZAQAAJs/aUh2Jd2CFGEKXbPYKns72TM9rIthBPMKRO19rR6gWvtkbulokhN69OogO6h3aZVHP1JqIKJ1ukiEbqy6EpkJNx6wq/gykVyoEW8FowYhW5WYHIJuQkeq7ASxZ6wMQd21eSGJKvHJOpkIIZmzKc48kb7nwbLQJSubS/Ec8g4eRqdPT1QoozzKygvLJUbRehj4NORaMOjERhc1Pr2XMgiQ6JsnOQOh9YSXGR45mgydCLKrQMmPJJGzvWHYnI4IGvWFvz1f6bIivPkBd369/Tcgvd4goctGr+4RowO53UEgcgqnsef5GvQNEbxKbfpmUIHbqMOkiFuNHXwqYzdqaqCV6K00oekpbkY5lv9wOdqp3Y/EQiSE=~4276787~3687481; Domain=.nba.com; Path=/; Expires=Tue, 16 Sep 2025 18:08:15 GMT; Max-Age=14400