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, 15 Jul 2026 04:31:03 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=DEA639BF8056F901749D4982F865A973~-1~YAAQpFnIF0uP31ufAQAAI+QKZBC3yb+xplfUbRjw9wt+l2sFSXsBWJ38rXAbKoRcVSyCs8W+1DkonrMQskt0LCsK6zwkrrksRZvd1S+myHDrKyOvrku9M6XFvxMB6Dma4bxcTPYqvW0L1h7GSV6sFupWMC2py34bB0JSiXpoIk0IUbbL+FAcTIaZ5KzzJBoRq2bqqyzGPwQQY0k1RVth/UOFgJy8QXnfuoomIVFFeMG/tu3E3cWKhjjqkQJT0tQ8FkbySZ1k6aoCFQU1/C09td8GU91SEqfLtZqfbLV3zSENKnIp8PRe4JkjMz8n0KC3Vkx4Lt5Wf24ZTGyVQ6/4jWiO4WsWRYGrYmVLVmUKjfIhME6WnLT2sB85ldhVuNrDKzSP9Mepksxg0cal4N9jbxRVNF0P+49rq3nX9ZLndYVVkMIKRhT4IhtmWLJt3xuMDrqLSTfPXLX2jAoE~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Thu, 15 Jul 2027 04:31:03 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=B0EF1846DB2F5D811D0A6A5AB0E2DFA6~YAAQpFnIF0yP31ufAQAAI+QKZADNtCiavsos7zbulbGK9f2Tv89bIZenic8ch7uHMGaXfOT4mZ56DdLJSlx4S2cLkBTxnMOO2XOSxb6rb2zebXViD0Myq1b5L4XyuIRNaKhAvwHMhlkn9MlxNBRs4WFLinF1QBGMg2xlcSzCDXWAkHpIPNjWGMkW9HTHpiCrK7vtyl+sFzuWtmHsZAMBOvn4/NCVdMmRSBw2zSBh8uy/qfzgp9c4IW9qspz9V2RLi3QguG6+0XaWIsp4mPgr9mwRJKTf5RWYddYMVMLIgeiE/cvtgLnuIZsCrNDBfGKdfF2znBXVyMeUXLZsIzE1xWtPmHC0tHAeviyDK+05VS4RaxATeCk8813XfLcxBOX2s+hFBBY=~4407605~3359282; Domain=.nba.com; Path=/; Expires=Wed, 15 Jul 2026 08:31:03 GMT; Max-Age=14400

HTTP/2 200 
x-amz-id-2: zrRqowjrqD/YvhDrMkWyzTB3kEafCYtz0RxhYDllWPvc5xSAUKCyTZSeC2vX2YTROqmaxwSHKSQWYuV7cQrD5hPLflCI+Qo/
x-amz-request-id: 2B451389Q2ZS9N9F
content-type: text/html
x-frame-options: sameorigin
x-content-type-options: nosniff
x-amz-server-side-encryption: AES256
etag: "4bc0e6a28f1dcd4f9dccc2d45e22d799"
x-xss-protection: 1; mode=block
x-amz-version-id: 1aUzXuwUOL9Mhbl9l59WAXj2aKGXci2T
cookie: nbaidentity=; cms-dev=; nlhasnbaid=; nlhasnbaauth=; region=; postal=
cache-control: max-age=30
date: Wed, 15 Jul 2026 04:31:03 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=00E623729684C42C53FA3C18427DA400~-1~YAAQpFnIF1KP31ufAQAAjuUKZBDBekGz2fGajiut7UDAB/8zWXzPsYEweVRbob7hBE/CBXo0y619hMTX+kFwDYCNn1z8U/Fi8Cb2qe8uH2LsaScUY1tiJwcIWEDLR6WrTd8MpaUOxpUIbk0m0VuXIQhe3jnxqaZewFSlxG0S1vwBc1hYA2HJe637t7UnIDTEaUpQk1CvFSiZdwqQicnbL1BqLaVneOXFGg9UAXvGCAQgYz7AjmAFTsxe2v1RJdeZ9W6BH1mfVCuZeit4ow3qiogGDB2E0HstVAkGuiHvd3KSIBGj8XiY+1uYk+tZZMF7eUykGJ9hFtk3Jvimqz+8Kj9Licp6MJ5y3KN6iCLYYF1csYXVPGcsrEaP6RWUTU6+azdLX30NfifWj20GN4XuvXAMn6ZOp1SrVXaAXwb6k8TpaH22Gf49XpqnNHYgDqiJ8k2RKyIsAfJ4siIm~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Thu, 15 Jul 2027 04:31:03 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=8DAEACEDA3FCC8EA7505BF101958DA08~YAAQpFnIF1OP31ufAQAAjuUKZACwQnv3xNzVBtcts5oA5XUg5mHWSWKYJR9BSCoaKVruEIix/3AsDEFAC1tOT96BtJ55arETO9ReJYVV+hTNID0p9yFIuGfkxyPo8yA5IUoSY/DPPeD5+9pBdcIDMh+bGpvQ4SKM0/H5YBj7J9o8SFGPaooNQ046bWOgFvXVSTFzcOTJP54p9fsFOr+PPJItVYMjvOP2VugtvegQcszvDNrf6EgeZu+dEofeKChkgS2mT/WbtkP0bBoehdm4tDxHFvBLb7Dtx1XwqM6C8IyekP8py2BdBftHSU0sEyHF6brJBtTbmpqmqAj33JSVhaMTXb88SZF4fFeBokCY1V6T9FCXwI82AKJgzYq8+EE+uZcgQJA=~4407605~3359282; Domain=.nba.com; Path=/; Expires=Wed, 15 Jul 2026 08:31:03 GMT; Max-Age=14400