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/2 301 
content-length: 0
location: https://www.nba.com/warriors/
date: Tue, 04 Aug 2026 21:46:29 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=100ECD145940C198DE3283ECF78A9277~-1~YAAQjhMoF+qvrqKfAQAAuw2+zhCukiXJUnqursNmdJY9098c1L5chOF6rw8YpCxQribGDWLkSnT8qlqOL/Z2P41t921+uY3CRKZ5KWIDtyhjWlweWdSPdSN8kCaZ2v2ZQyKQWqILlqDy20fPIJzSVGRjPiOgyazMRH4V05GkuJXE9yPHizzTXAa8QnYtkNOo17jz8nEtXPjBTS8X38DjfYonWI4rF+DKWvddj1oJxctZgpV+DIvjgR+dF93ko525BP5Qi81J+g7nKscnEXlfzwEIzEfm6/4p6sJp04bta2t/yN5zMi44AnnvUsX+SBxo1VivJzHMS63waWLwlXLEKL1XEGdd8jpAifR8jQe8pQ0MZcM9M9HcQxINBlhtlj9fQUwr2FZ1WuW8v/f561+enzKOU8axiewuBjxKB8g5zd/bToY8sEKexLYG6jFAD5sZo2zH2qGn4/9TUwUQ~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Wed, 04 Aug 2027 21:46:29 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=4F67D25EE30F1B05A3E63FFFCD926EF8~YAAQjhMoF+uvrqKfAQAAuw2+zgB+8V+0iuQS2C/zoUm9er0Cq0M+fNBgFM6ndWtwc4jsp6EX6Wvl0uIr9TfDOgUXflwEWX3s7g75ZWQbFqGwqBmWW0oJd7nVQf/6QMI0FW9gwPQNljCVqm686sIxDJfXOQrz9nAj9FKPvJ6nHRn2ZF+nHzUt3ot7MM0VyJQIa6JGEKpsFdeT4UijmTxspbLCsQXo8BjRPCo11MuEnbrcBT/j4tADK/fqgGN7zBEqwBGjjhXP2CFcitCjAw+4sD6EDA/J/giFuZeGKprEB/Hada2+YXCb3jYC7oitdTAmwAkhXhZ9FgW/+cf66lpnCskQSPJpONV7QOQntbeNEz8qeCyISZz5/7UI9sx/CHUjgrmR0JM=~3490102~3355969; Domain=.nba.com; Path=/; Expires=Wed, 05 Aug 2026 01:46:29 GMT; Max-Age=14400

HTTP/2 200 
x-amz-id-2: OHhPhYAAbGgDf9tT8zqvn3PQNbs10sAPum2kxsP7/UcmFMT3ZKvqe3eo0azsOAgLr7OFOmpkCn0=
content-type: text/html
x-amz-version-id: 1aUzXuwUOL9Mhbl9l59WAXj2aKGXci2T
x-amz-request-id: GDFND4C5ZQS9TST6
x-amz-server-side-encryption: AES256
x-content-type-options: nosniff
x-frame-options: sameorigin
etag: "4bc0e6a28f1dcd4f9dccc2d45e22d799"
x-xss-protection: 1; mode=block
cookie: nbaidentity=; cms-dev=; nlhasnbaid=; nlhasnbaauth=; region=; postal=
cache-control: max-age=4
date: Tue, 04 Aug 2026 21:46:29 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=D9FD2C2A7B25958528F7012EE893E90F~-1~YAAQjhMoF+yvrqKfAQAASw6+zhBI504fV9eD6jn+rTKKRzWjhinoMGa7EOqwd5q6UYlkSdPUpWtbC+xCF9B2wrQql/I0CLn5ZE3fhOBWRWpB35foNEVW/YWr9Z899CTSDpoL79VHZijmyZUzF9+IbhJ8JFgLBFA6uBwqra8LivFzE40KlbU+g/obwReumZIJm57lq7Nv1zXTDrs+UMZiZbI6evya0kdZ3HydNbIZnQCOwH4x5LcIzUhTbUD6wJciAAu+uWRPwuT4zskPiA1uF8NxApd5KDjRdZgePJo7B6JOCA/1H00qb+AP9xrjZ09rEhA9FBLg0g2HNskKk8k3Hx1hY+oyRSuqAMKOhLWEP0v+ZyenrGB867hno+SrSX2GEpD2OiF8pAqcgVKSp5XOng4Jrv5u3VOfNA5m6XZLubVT5q7CCGFTLevLeW/CWYfD1dCuZL6ewa0B2jPc~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Wed, 04 Aug 2027 21:46:29 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=A73F58A8FDAB192C10ED6693AD44F7F3~YAAQjhMoF+2vrqKfAQAASw6+zgBu+At9TtDwcV8VuduJqXsC9dx+1QD+4a43O0YzQvg7g4Pu5a4P7gya12upnUoBs5a2BnGuTP3QZeODCIGr2SNu6sICq7mfSo2knTLPP1LCrxrz17d0h/V4E936VyM08jQbiGOr6cK5pjq+d8tuLzItQi1mC3SkEMCWIM/xOze+X3z01XdP9mSSGhiolnJhgmzl7m+OHnzBr9y60ZrWLSVhy8gAqu4MS9VDVlBAd3d6fkdi+YTZGmakOd4TwS/aAv8REKgRCILXh9ab4jmtjnYOk3gKN7sOw67LtnmKlS+ARH+BhF7RbIp66Z0fCxXpQ3MdcTQjnzkaev43y4/LfMpt0jAP4Zkbj+vDxg90L/4+5f8=~3490102~3355969; Domain=.nba.com; Path=/; Expires=Wed, 05 Aug 2026 01:46:29 GMT; Max-Age=14400