Zendesk Public IP addresses

Zendesk maintains this list of public IP addresses to allow customers to provide whitelist rules for access to their internal resources by Zendesk servers. 

IP Addresses

 

LAST UPDATED: 2015-02-25

104.130.100.68/30
104.130.101.28/30
104.130.101.32/31
104.130.106.80/30
104.130.91.42/31
104.218.200.0/21
108.166.17.64/27
108.166.21.180/30
108.166.24.224/28
108.166.31.240/29
108.166.33.16/28
108.166.33.32/28
108.166.41.0/25
108.166.44.40/29
108.166.5.224/30
108.171.165.104/29
108.171.171.128/27
108.171.171.32/27
162.209.39.0/24
162.242.187.64/29
166.78.199.118/31
166.78.83.248/29
166.78.88.0/24
173.203.25.192/27
173.203.43.36/30
173.203.47.128/27
173.203.47.160/27
174.137.46.0/24
184.106.0.176/29
184.106.12.184/29
184.106.16.68
184.106.16.69
184.106.127.192/26
184.106.37.0/27
184.106.40.64/28
184.106.50.160/28
184.106.7.176/28
184.106.7.72/29
184.106.73.0/27
184.106.85.48/28
184.106.9.176/28
184.106.9.192/28
184.106.9.224/28
185.12.80.0/22
188.172.128.0/20
192.161.144.0/20
192.161.152.144/28
198.101.130.128/25
198.101.138.16/28
198.101.186.0/24
198.101.188.224/27
198.101.188.224/29
198.101.189.24/29
198.61.137.88/29
198.61.139.64/26
198.61.143.28/30
198.61.146.88/29
198.61.149.152/29
198.61.252.128/29
198.61.252.96/29
23.253.17.152/29
23.253.179.192/27
23.253.19.240/30
23.253.192.168/29
23.253.197.218/31
23.253.198.176/28
23.253.29.244/31
23.253.31.84/30
23.253.8.0/24
50.56.23.160/28
50.56.36.56/29
50.56.7.68/30
50.56.8.96/27
50.57.192.176/29
50.57.196.32/27
50.57.198.64/27
50.57.199.0/27
50.57.199.224/27
50.57.200.204/30
50.57.201.132/30
50.57.4.208/29
50.57.8.128/27
96.46.150.192/27
96.46.156.0/24

 

Note: This list should NOT be considered exhaustive, but is complete as of the date listed above. There may, from time-to-time, be new IP addresses added or removed. We will strive to keep this document updated with those changes, though it may be operationally necessary to add new IP addresses and there may be delay in having those addresses updated here.

Need help? As this list may change from time to time, we invite you to submit a ticket to support@zendesk.com with any questions, comments, or concerns about new addresses that may not be documented here. 

Outbound Email Servers are listed in our spf record, which we update as needed.
Our spf record can be read by these commands:

    host -t TXT mail.zendesk.com

or

    dig txt mail.zendesk.com

Have more questions? Submit a request

Comments

  • Avatar
    Javier Linares

    Hi,

    I've pinged my zendesk URL "ping frogtek.zendesk.com" and got the IP 108.166.31.242 which is not listed above.

    Do you know why? Which IP should I include in my whitelist?

     

    Thanks!

  • Avatar
    Adam

    Hi Javier,

     

    The list has been updated.

  • Avatar
    J Tro

    Just curious at at this point. I am familiar with RemoteDesktop, but I've never even seen a Citrix remote desktop.  Are there any public zendesk test servers where I might login using receiver?  Howto also appreciated.  

    Thanks in advance,

    Jac 

  • Avatar
    Brandon K.

    Hey J Tro,

    Is Citrix remote desktop an integration you found? If you have found a way to use the Citrix remote desktop through our Rest API you could use it on a trial account by going to www.zendesk.com/signup and creating a new trial. This will give you a fully functional Zendesk account for 30 days that you can use to try out our service or any related integrations.

  • Avatar
    J Tro

    Tried signing up twice on the citrix.com site, but cannot login.  Will try here, and thanks...

  • Avatar
    Mark Stringer

    Is it possible to add a subscription-based email notifications list for changes to this public IP address list please?

  • Avatar
    Jennifer Rowe

    Hi Mark,

    Just click Subscribe at the top-right corner of the article.

  • Avatar
    Sean Kinney

    For those of you who are subscribed to this article, please note that we just updated this document to reflect three new ranges:

    • 198.61.143.28/30
    • 198.101.188.224/27
    • 162.209.39.0/24
  • Avatar
    Kevin Taber

    Read a SPF record from a Windows OS via the following command:

    nslookup -q=TXT mail.zendesk.com 8.8.8.8

  • Avatar
    James Rosen

    We just added the range 96.46.156.0/24 to the public IP addresses.

  • Avatar
    Christoph Kluge

    Do you server your Sandbox system through the same ip pool? a quick ping/dig resolved to one of them.. 

  • Avatar
    Laura D.

    Hi Christoph, 

    These IPs are listed only to allow customers to provide whitelist rules for access to their internal resources by Zendesk servers. Meaning you can allow these IPs to talk to your internal resources knowing the information is coming specifically from Zendesk. There may be other IPs that are involved in the process of running Zendesk but we don't maintain a public list of those. 

  • Avatar
    Sabahudin Zaimbegovic

    We are facing right now the challenge to get emails from Zendesk (sender address support@_ourdomain_.com) in order to be accepted by our email Server. Those emails are normally detected as realying and rejected.

    If we would whitelist all your ip addresses (some thousands), it would be a big security impact inside of our IT infrastructure and this is declined by our security department. And finally, it is not really viable setting.

    At the moment our Agents cannot get any notification from our Zendesk portal. And this is very frustrating for us.

    Do you have any other approach to this issue? Can you define more exact your mail servers, which are sending emails to our mail server?

    Is SMTP/Auth a development topic for you?

  • Avatar
    Kevin Taber

    Looks like my spam filter started blocking notification replies from a new IPs not listed above:

    50.57.4.208

    50.57.4.209

    50.57.4.210

  • Avatar
    Nick de Beer

    Same issues here. The range seems to have moved to 50.57.4.0/24 from 50.57.4.0/27 in this document.

    Emailed support.

  • Avatar
    Kevin Taber

    @Nick de Beer

     

    The range is different.. the /27 was 50.57.199.0 .. the 50.57.4.x is new.

  • Avatar
    Nick de Beer

    True. been having issues all day since we traced it out - whitelisted the new range with a /24 to be sure. Zendesk your change control is a bit lacking..

  • Avatar
    Sean Kinney

    Our apologies for the delayed notification! We've updated the IP list to include the following new range:

    • 50.57.4.208/29
  • Avatar
    Adam L.

    @Sabahudin

    I understand your frustration here - however, if you are using a cloud service that also send emails, you will have to whitelist all of our IPs.

    Unfortunately, for security reasons, whitelisting the IPs is generally the best option here. 

    SMTP might be considered in the future, but as of now there is nothing formally planned here. 

    Sorry for any inconvenience this might be causing - let us know if we can help in any additional way.

  • Avatar
    Kaydian Radway

    What the protocol and port being used?

  • Avatar
    Laura D.

    Hi Kaydian, 

    These IP addresses have a broad range of uses, could you describe a little more about what you're looking for in regards to the protocol and port?

  • Avatar
    Timothy Holman

    Have there been any additions to this recently, we have having strange issues with our Zendesk - Jira link only half working (can create new issues) and not sure if this is why?

  • Avatar
    Laura D.

    Looks like you already got a reply in your ticket Timothy :)

    Just in case anyone else is curious, we were able to fix this morning's glitch, please refresh to make sure you're up to date and let us know if anything still isn't working (support@zendesk.com). Thanks!

  • Avatar
    Chris Cogdon

    Can we have this list available through the API ?

  • Avatar
    Laura D.

    Hi Chris, 

    I passed this suggestion along to the appropriate teams. I haven't gotten a conclusive answer yet about the possibility of doing this; if we do make any changes to how you can access this information we'll provide an update here. 

  • Avatar
    Joe S

    Is there a specific range or group used by the API? specifically, we are opening a rule to allow zendesk to talk to our internal jira servers.

  • Avatar
    Laura D.

    Hi Joe, 

    We don't have a specific range or group for the API, it could be any of the addresses on this list. If you can whitelist everything that would be the best option. 

  • Avatar
    Eduardo P. Xavier

    Hello.

    How can I get the SMTP server IP list?

    The commands host -t TXT  mail.zendesk.com and dig txt  mail.zendesk.com dont return ips.

    Thanks!

     

  • Avatar
    Laura D.

    Hi Eduardo,

    We don't maintain a separate list of SMTP servers, I'm sorry, this is the only list of publicly available IPs. 

  • Avatar
    Eduardo P. Xavier

    Hi Laura.

    Ok. When you list 

    • 174.137.46.0/24

    Do I have to cover 174.137.46.0 - 174.137.46.255 range?

    Thanks.

     

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