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: Mon, 02 Mar 2026 09:11:50 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=4A7F20CCE120AF97A4CDC49A023EE9A2~-1~YAAQlGAYuFrD22ecAQAALXPRrQ+vJz26qHHoYeUQy//gGJP8f5cwnU1BWzifQ2hQXNGaWU/sLw6a+fuowpB+YRp+s178eQSSvWrTzoLUDSBwNOlId1J4pH9QHBUfXkm4nZ/Ljm0we0b15HH42oEI8MkADfgEorgtUcL7vJ7mL6Pa3pgq4jQi4dQyXqr3tP/aLd/qUU2zf3ow0daiVTSskHUriFNtZjAExkE6lMOIrNzr4ubKYOvEMyfvV+ky6iJnFJTy7t3HkhiLgh4V6Lb6d58tPBvNj7XVSM8eFWH7U/Jb57pxc4qPT/ZMKPB/mnHnbnd3+kT3n3i5ZrtWrLXx5yXEAh+H6FiuEr/CoNFGkMzCfAlsayuUyydHfh1Y1/Uph1za0SvnT7Y/WjlOYS1rpgNRZwaAGqvhAsloanCMYIIDRRfaHg7w61qHWNPhnhO712zoJoUtuNdXNLw=~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Tue, 02 Mar 2027 09:11:50 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=0D842C4199F30149D2DE43B46C65DF7C~YAAQlGAYuFvD22ecAQAALXPRrR5tzkDPjE+J6IdaV5pbV1WNcOOMSCB5uXFb7HJRBiScXT5gM2oBB5HM1GAe0/w1k2TG7uvmdU+vLe8wGGTIGlUQUGWA0pH++bmdeuOk9gDW0Nat2d39/yGC5bbvKeNAwvUaOgr4zgwYMsklhQGsfNnh/EG3T5wyHL8Tli9Z2hSArK5wTYsICtO3bTcn9sXbyB8RPvOzcGpcJwE8Y484biyU0JhGq0smX+ttQVWqGbxOPXpUE2lnpMoq45/6cVYXUdZkCFTR0m5frIEkUI/kj7025vlTPCJRcUgXn1V+gVNd1UOm4G0FiX25DyD6x1VfPwXBMYAGrDu/jiERjNiyblEuec2VKIE719/X07BSQX08biY=~4272965~3360049; Domain=.nba.com; Path=/; Expires=Mon, 02 Mar 2026 13:11:50 GMT; Max-Age=14400

HTTP/2 200 
x-amz-id-2: 6xdXA/ruFp/ZxSkKOwZ0KpfNREp6lQ2/UQ2GTGe2eW0NMxt7nCNoqvyvMnmGJKFcK9hjtkd1UpKIftwsmgoYYuZCJF/BlRWM
etag: "657c1b16bd96357065ea9c68d553b85f"
x-amz-version-id: q9rz4uxrv4W9aWq42XtvIaT2KxZ0E2cS
content-type: text/html
x-xss-protection: 1; mode=block
x-amz-request-id: J6268PP2T3CWD5NE
x-frame-options: sameorigin
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: Mon, 02 Mar 2026 09:11:50 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=9002E62A1288F41BFA0A84108842C5DB~-1~YAAQlGAYuF/D22ecAQAAkXPRrQ+kZEiok6iKLmEcHpupLuohT8sz3dRkt/Bs64vv52YvTmnzojKBQahQ4qExCcw4/Q8+rUkknH/Iw/1c/etJXHyt9QJQpl4kOe6e9mJXgbsn9JeA0hamqovmlWV9gZQk+u8kWole2J7BWKHxbGryMPnNP8IPysbssEcyyIegl+ZeO28BeXNJvnampmgTqUaWj3BYoy4uW9SFT2fpZSPIMHK0WZFXlU8Fi2AxqNzL8kBAR66gbHXcG5SyBrf4aqwwDsvcpl4NJ/TiPyqbX4yu4TRLbDhvavmgBOJ7ZCizAPaup8Ez8+qN4vXxXj4jYSNU3IvfylBQs/YVnrhv26s8b4P061g+L1UUTL+hy2iifbDlXrIRltDMh8q1TM+ego5Gu8dvlJr2+lYoU4UjpKmKQ2kXiyTkhzFZrY/kZSGPjGoIMweYZTN6RAE=~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Tue, 02 Mar 2027 09:11:50 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=FC39A14454A1EEF856DC46B17AFF85C6~YAAQlGAYuGDD22ecAQAAkXPRrR4RGLM55QhJjTO58pyZX3dcdLWZn8MJM/8BbpE9+r9gep2lI6daLLssAPw0gmNXMzseP1rCYxFW/oH7MBd2L5AAmYHgVGmoJPpT5HPdqjT0P0tDWdysH8Bhxu8lrtxwQiWalF/K4YResANxNKriMB5LJxuDblWNhmMChaneVex1fyJ9xIAYUnvNFzlHeKt4/p3Tfbi07W1ZTj9ly/7DHf94Dsq29Khw3RrCLyOgXOEjVFJrXgmaLq35RBv5HU/DeVSOkvsLI6VkTzW16ne5an0g62NZBYIoEXNR1qlD44XDv1/flpu8HBcNrmP3Iqag9Y/8ual1pcCmSqjQGiKbwpaWa3O9hYGm4Dl3914zfOain/I=~4272965~3360049; Domain=.nba.com; Path=/; Expires=Mon, 02 Mar 2026 13:11:50 GMT; Max-Age=14400