What IP addresses and user agents are used by Siteimprove?
Note: This article provides details for the IP addresses and user-agent strings used by Siteimprove on your website. You should verify that your IT network administration team allows the IPs and user-agent strings for the services you use. This will ensure the services are not blocked. You can download a text file containing all the IP addresses for use when configuring your allow list.
This article has been updated with new IPs on September 2nd, 2022. For a list of IP addresses added in 2022 see article - IP address added to the Siteimprove crawler bot in 2022.
Please reach out to customer support if you have any questions about the information in this article.
- Content Suite IP Addresses
- Content Suite user agents
- Siteimprove Analytics IP Addresses
- Siteimprove Performance IP Addresses
- Siteimprove Response IP Addresses
- Report and email IP addresses
- Service Hosting IP address
- HTML/CSS validation
- Text file of IP addresses
Content suite crawler IP addresses and user-agents
Note: This list includes IP addresses and user agents used for the Siteimprove content suite (i.e. Quality Assurance, Accessibility, Policy, and SEO). Crawls run on ports are 80 for HTTP and 443 for HTTPS.
Content suite IP addresses
The following IP addresses are used to crawl and check your website:
220.127.116.11* (Global - commonly used so always add to allow list)
18.104.22.168* (Global - commonly used so always add to allow list)
*These IP addresses are Siteimprove's most commonly used outgoing crawler IP addresses.
Content suite user agents
User agents can contain full user agent strings and user agent tokens.
|Full user agent strings||User agent tokens|
|A full user agent string is a full description of the crawler and appears in the request and your website logs. (Note: version changes may occur)||A user agent token is used in the "user agent:" line in robots.txt to match a crawler type when writing crawl rules for your site.|
|Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0) SiteCheck-sitecrawl by Siteimprove.com||SiteimproveBot-Crawler|
|Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0) LinkCheck by Siteimprove.com|
|Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0) Image size by Siteimprove.com|
|CSS Validator: Jigsaw/2.3.0 W3C_CSS_Validator_JFouffa/2.0|
Siteimprove Analytics IP addresses
This IP address is used by the Behavior Map Service in Siteimprove Analytics. In many cases, you will not see this in your website logs as it is often behind one of the crawler IP proxies listed above.
22.214.171.124 (Global - Behavior Map Service)
Siteimprove Performance IP addresses
These IP addresses are used for performance monitoring by the Siteimprove Performance product.
126.96.36.199 (USA Midwest + Northeast)
188.8.131.52 (USA South)
184.108.40.206 (USA West)
220.127.116.11 (Western Europe)
18.104.22.168 (Great Britain and Ireland)
22.214.171.124 (South America)
126.96.36.199 (Northern Europe)
188.8.131.52 (Hong Kong)
Siteimprove Response IP addresses
These IP addresses are used for uptime monitoring by the Siteimprove Response Service.
184.108.40.206 (Sydney, Australia)
220.127.116.11 (Sydney, Australia)
18.104.22.168 (Sâo Paulo, Brazil)
22.214.171.124 (Frankfurt, Germany)
126.96.36.199 (Frankfurt, Germany)
188.8.131.52 (Mumbai, India)
184.108.40.206 (South Korea)
220.127.116.11 (South Korea)
18.104.22.168 (Tokyo, Japan)
22.214.171.124 (Virginia, USA)
126.96.36.199 (Virginia, USA)
188.8.131.52 (Oregon, USA)
184.108.40.206 (Oregon, USA)
220.127.116.11 (Northern California)
18.104.22.168 (Northern California)
Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0) Response by Siteimprove.com
Report and email IP addresses
Note: Emails are sent from the domain @siteimprove.com
General email IPs
The following IP addresses are used to send out Siteimprove emails (e.g. welcome emails, forgot password emails, report emails, etc.) but not including the Response alert email IPs.
22.214.171.124 - Receiving emails
126.96.36.199 - Receiving emails
188.8.131.52 - Viewing Dashboard reports and module data linked from email (reports.siteimprove.com and report.siteimprove.com)
Response alert email IPs
The following IP addresses are used to send out Siteimprove Response alert emails only.
184.108.40.206 - Receiving Response emails
220.127.116.11 - Receiving Response emails
Service Hosting IP address
This is the hosting IP address for the Siteimprove Service on the following domains:
- my2.siteimprove.com - Siteimprove Platform
- id.siteimprove.com - Siteimprove login
- sso2.siteimprove.com - Single Sign-On version 2
Note: Crawling is not carried out from this IP address however this IP address may be required, for example, in a restricted CMS environment when a customer wishes to use the Siteimprove CMS Plugin.
The following domains should not be blocked when using the services provided by Siteimprove:
HTML/CSS validation checks are performed from the IP:18.104.22.168
Text file of IP addresses
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