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, 21 Apr 2026 17:33:30 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=782C9E81872B868F3802BF81CA15EACB~-1~YAAQD24sF/ofhFCdAQAA07MasQ8TXw+7+bFVN8JddiXe1i5SwOxI4GigCUaQc6GHmIjI+jUP5PsaRLhR1pICLUui/XHgtFRi2R8bPPgl/JuuewsMKkvCsBIoPs5pHL0YOjDMLOIr39l74nJwbGGZD84FpOhyzo+PAJeUbasuSKLh6V6BjMCWCdV25O3AqtiFNvARg8g44qMMUdpOkzU8vVK/4qTpGn6gD6A7T3d0dYNo3oIbrDrMCQuMtc/YOL7uGSxwsReC3fqbyCde8Cry2ScjTCnFe3OWHOSemKXQ/6Sz/HDaIB/dQneaprw6HzJlQFIL1hvhEB9SPteJ/30Q6Z6d24LdLVzjfcjv545QLITHb5bSdD+tp9m1IsQZArS9h0E40V+H4pd3flqXgnoZfhNSUPtOJ/Obm/OH6YFxIhi4pY87AWbXXGdLIYiiTidmDC5aD3feS4/hpeQr~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Wed, 21 Apr 2027 17:33:30 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=05C268BD6F09F48B32EC9E4950241017~YAAQD24sF/sfhFCdAQAA07MasR+lo1gZXGCFIH9aXxWkWHh5ZM5AK01N58bqwuRhJIEKt5UOwELXjBjmReGS3bHP2Poo3S81lubzOsopsGrsNnWwihJCoTI8GJhLJ01hTJG7XeCRwlJ+8vfKUOuL94LpUxSWQGlMGNxdpf9lM8Wt2JBeRSzTFaCJzTeA7AKibfODz66eFRn5CVPudsAj2LrYe0UhBOuEDRd0/aeSBAW8g0LNX5Vp612xuNkyXUOqH/oTvvMxlEcsAyIQM7+R4c2MmtTeZ9r6amE2aDYnE6JSOl7OPCjqlypTLSXb8C+nIdaLYjGubIdXe7wCpYHAf/iEMr5GpddOnJV4/r3934tcGayxWkwKvnsu8WgRlcJ2A/w6WK0=~3356997~4277814; Domain=.nba.com; Path=/; Expires=Tue, 21 Apr 2026 21:33:30 GMT; Max-Age=14400

HTTP/2 200 
etag: "b2fd54f372716a0f3a8954de0dff9df5"
x-amz-id-2: Hbu/e2my0uJzy5uoZ05fv1Rg/DQeZ72apvED1NWCoqSk31S67NhT0OTWKsxzD2OnBPhClCY7MTYy6HI0XWV2DwDj7HNiMIW2
x-amz-server-side-encryption: AES256
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
x-amz-request-id: JT4VJ66C828X25SB
x-amz-version-id: dcUZKojM9GfNlfETY68UpzW73C0W8THL
x-frame-options: sameorigin
content-type: text/html
cookie: nbaidentity=; cms-dev=; nlhasnbaid=; nlhasnbaauth=; region=; postal=
cache-control: max-age=30
date: Tue, 21 Apr 2026 17:33:30 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=CED8AEA89B26DBF77E2688265FCD2217~-1~YAAQD24sFxEghFCdAQAAnbQasQ/HbBqXVUxD9LJOU8vJbrO3Zj2rY8PUKmNHV7/cArSjHSKrMN5Hx1pmAZHWtvfu53bHwdrNaQeWXsxcb1th6AQapeNbhchbBG9cfiJDODRFcDcz0VvJYETj6cyl/i5GL7p4NfOOsFZq4dEoIvOy8GOvrb49n497QU5PLSBBfpyAUXkxD30oX6qutIMUSSzWt0zbM3FBgJ1Ln5LynVWBomuOoZeqsKA7aQd2uV3kT8A8YqDaOWZQ32c/wR46v/8uJp5YVsvhLDfM5Ut6NtbdxNAd4bJ8/aLMdyUuflgaQNcA2ipibYMysRgEDLJDhMh2ElyPqU0Iz9w33yy3vRr0+T9hc+/CcQOsqtJaUhOn5HkNxM3orzTVzTWNtJqXn9+/Pzj6nRuY3hczT8TW9iHodGuPuvNwIDOjbpSm5rVBj6mwRVihRTRpKRvL~-1~-1~-1~-1~-1; Domain=.nba.com; Path=/; Expires=Wed, 21 Apr 2027 17:33:30 GMT; Max-Age=31536000; Secure
set-cookie: bm_sz=4663E606253B1D82A4E37F16F8D7F310~YAAQD24sFxIghFCdAQAAnbQasR/FIHuQW+9kZ6ndNFNHXz4YB+wijuKS61BTMPI7bdTJvS7Njw4oIgMJy0hrLH8Dvd7oIsY+6LveRdiuAbpKarMwEPlnzZp6U8YdN3D9UYOzg+h0c89VCm6aDjU5hu7pEO7BlpOZMOA3S0PC3uNVK0kcKRZyPDgHv9HM8uhhvSL4ZAq2P3mIU3h5AtmE+Sx6a11mwMzeLw12tFLCPVc0PfJcR/7gcUs1V3eYtezeaq0KsVNlHEhFIH0uBtui243VtDBI4GIjlOMxQhj/6DWO7VG/cpGH/VO+vrg/2e87ULRYAmlZ/ttbZeG7dDa8kDP0Dvs/M5+vL4PIM4LQhEnhP73FjvO02GD0Z9sxKiEyFT+hHgc=~3356997~4277814; Domain=.nba.com; Path=/; Expires=Tue, 21 Apr 2026 21:33:30 GMT; Max-Age=14400