Can I detect what webserver a website is using?

Question

Is there any program or command that I can use to detect what webserver a website is using? With webserver I mean in software i.e. IIS 6, Apache or nginx.

take a look at this: http://stackoverflow.com/questions/1097472/how-to-detect-web-server-type — chook, Mar 16 '10 at 22:48
I like: https://w3bin.com/ but it's not always going to be accurate due to CDNs such as CloudFlare, etc — CTS_AE, Jun 19 '17 at 09:46
Since the tools `wget` and `curl` will not become outdated (and probably many following HTTP versions will report [the `Server:` header](https://www.iana.org/assignments/message-headers/message-headers.xhtml)), this could be reopened. — serv-inc, Oct 04 '18 at 11:12

score 65 · Accepted Answer · edited Feb 15 '21 at 09:56

65

You can use Netcraft What's That Site Running for a one off query.

You can use

wget --save-headers superuser.com

Which will dump the server headers into a new file index.html which you can then view in a text editor.

Eg, for this site:

HTTP/1.1 200 OK
Cache-Control: private
Content-Type: text/html; charset=utf-8
Expires: Tue, 16 Mar 2010 22:54:59 GMT
Server: Microsoft-IIS/7.5
Date: Tue, 16 Mar 2010 22:54:58 GMT
Connection: keep-alive
Content-Length: 119466

If you need a one-liner to just report the webserver type only and filter out the unwanted stuff then use:

wget -q -O- --save-headers superuser.com | grep '^[Ss]erver:' | awk '{print $2}'

edited Feb 15 '21 at 09:56

5p0ng3b0b

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answered Mar 16 '10 at 22:56

Richard Holloway

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for Windows users `curl` is better, GnuWin's ported `wget` doesn't return anything useful – overdriven Jun 08 '20 at 09:22
Does not work for me. Linux Mint 20. – Radim Cernej Mar 21 '23 at 01:42

score 29 · Answer 2 · edited Jul 11 '20 at 23:07

29

raw:

curl -I duckduckgo.com

filtered:

curl -s -I duckduckgo.com|grep Server

or

curl -s -I duckduckgo.com|sed -n '/^Server:/p'

or übercool

curl -s -I duckduckgo.com|awk '$1~/Server:/ {print $2}'

or for poser

curl -s -I duckduckgo.com|sed -n 's/^S[erv]*: //p'

only for unixoide OS!!!

edited Jul 11 '20 at 23:07

jamesdlin

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answered Aug 07 '13 at 06:39

user243885

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1+ for "übercool" and "poser". Indeed SED+AWK Users are übercool posers :D – Gewure Jul 19 '17 at 07:48
works with `cURL on Windows` as well – overdriven Jun 08 '20 at 09:23
I would recommend suggesting `curl --head` instead of `curl -I` (uppercase i), which I misread as `curl -l` (lowercase L). – jamesdlin Jul 11 '20 at 23:04

score 3 · Answer 3 · answered Mar 16 '10 at 22:54

3

For a public website, you can use Netcraft - http://netcraft.com/. It allows you to plug in a website's address, and it will analyze the headers and tell you the webserver in use.

answered Mar 16 '10 at 22:54

Mox

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Can I detect what webserver a website is using?

3 Answers3