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: Wed, 26 Aug 2026 03:34:59 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=D10799AF8590F411601B7E25B5CCC53A~-1~YAAQjhMoF/ThZzKgAQAAm6kiPBA7lx+JIJ4XIjVH7FDdSqqZeKeVXIZlw0ei7eOpXVode+Muqoeauq/ctqTcIkVK7fhmPVLGzmBtTPMtRnmLMI3dPSenabnvS1kkH/voV94Oqktb1xOg3+DgIA7U2q452hoDQDRrRm5IwFOSiPngpL6J7ul9KBiDEvrTiNwQl+oeKc+ln/1NisfTcjZ5QGdJpVW9MImzXZgLuNclE2HaiL/KBbTomxcDzQVcleVo9Jifqpr/e4Q7G253M6yNpG6ZYg5Xi2dP4jW1BMtjMVqnE7uBK9MMkrMdO0qzAxRG3XVI9nz7y/eh51On1OpAC4Fhvw6/ssXb79MOxOlfUGdqEncn/PsWwdWExA9LhJkWHwN/R0Mcg06gcEy6uS+GS6uBsMQzay0eP+7LqGruoYHV/Twuo1csKJMg1GIGI3zyXIVOsE7MrHZTdJHv~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Thu, 26 Aug 2027 03:34:59 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=B2BAB46A29FB8B033C4808DF096E62B4~YAAQjhMoF/XhZzKgAQAAm6kiPABct04cvJVQSo1hakuu/0qjvOBbDg6sIdjlFwoc3fZYJ8ksEQ3xkOUBM54fEXugS4u5rH7ZVrsuDncrLbmldmRMA8zVunfviII78DmtNm6Nzc/xQLZZumejmCf6SJK9kpBDnT6ZQF7RL9ZsCmv8V5Jy7i3WRRLQzF06+mBFJ0/o1Sm2bgzAETOMpMLp5sLk8DXblbWAp8pAnTct95h5NfA6llQ70BCdVzu/ifoVFIGk3d/EhDlgsnuOiHFAOBkr9uuD2sLJ5l8S6jTQ3DoPDA70igYca5gCv8RXh0PFtPJB51av2sZQ7+m605fqngEOn1O+H4yy5AhIJnKGs4kTBLNptKnvkhV3+P0s2AhxfH8/2Ao=~4601924~3684165; Domain=.nba.com; Path=/; Expires=Wed, 26 Aug 2026 07:34:59 GMT; Max-Age=14400

HTTP/2 200 
x-frame-options: sameorigin
x-content-type-options: nosniff
x-amz-version-id: 1aUzXuwUOL9Mhbl9l59WAXj2aKGXci2T
x-amz-id-2: OHhPhYAAbGgDf9tT8zqvn3PQNbs10sAPum2kxsP7/UcmFMT3ZKvqe3eo0azsOAgLr7OFOmpkCn0=
x-amz-server-side-encryption: AES256
etag: "4bc0e6a28f1dcd4f9dccc2d45e22d799"
x-xss-protection: 1; mode=block
x-amz-request-id: GDFND4C5ZQS9TST6
content-type: text/html
cookie: nbaidentity=; cms-dev=; nlhasnbaid=; nlhasnbaauth=; region=; postal=
cache-control: max-age=30
date: Wed, 26 Aug 2026 03:34:59 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=0609A8CD9F7077991405EF938668D58B~-1~YAAQjhMoF/jhZzKgAQAA+6kiPBChJhdMwrfxtAOOwIbqamNNOEKeXbXSHV+Nz2S7DRiPqioWs68wgDZr3Qq7Jcar1xybYtwrJGMBbbVlMioSSRH2yzxfFvC8aW4Yr9D3DInuyAgAOmW8jV7DH24ZhCP7l2/V0tNTYgZtFe/5JCTU/94asfg4CZy91f7ZwJIc1X3QtU9Nb1o2EBDPi7hlkZOQOMiaa3MK9ECEOQqhyQoJWm8o0hdjZbzrS5Z0h4627WGzpMfDUH2ORiRW3+i3nAgH8JxBlodYH68hfFqQqMJevbEtQaqL3GyKuLmQ3rUlNy9Oz95vQjSEV+AGR5PMj7J2xFFtyu+MUsPubNSIEYiX2LF/mRFYzRraqXgm1HNy/ZjIgkzDxgAAcsjtpsR35IQKWhxqXz6AtLlLsuFb/enp3/bBBC32sV7bM0YDHWTGegCPFbhk4T1x7obC~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Thu, 26 Aug 2027 03:34:59 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=E4CDB23C67C8DE1666D67AC155030624~YAAQjhMoF/nhZzKgAQAA+6kiPAB4Uu13ltK0x1+hlqIeFlQHXr4oBmRprAJiyD2SQoRmk4qwlDVNuMPDGJO7xSdzKekqgFpnt3Pz37DynkGQkETNtw3I9ENB2omyvAvmV5UI5+vhaEfnN7hSNJVjXdDdxeti3zNvbLhoWYSft9I0F8h1hU9B+ZR913X5ovHK6VVyKEoYgVhfWIcGJxlmbTayqmB1QqrFFUeuHZPE9paOMenlLZflAuJ5dKJSN7TK9VM0IodPdz2F82rmOpnDyRDeBUacz78TMXmTI9edY7Ulm5h/4palNZTmQH8lRceYPD68n5YB+JU5new67OGPy9GiO++i5w9KZlmooYImlTwn+AVEcehqQWHQCkB7/6fSQsgSElc=~4601924~3684165; Domain=.nba.com; Path=/; Expires=Wed, 26 Aug 2026 07:34:59 GMT; Max-Age=14400