# Updating IP Address for SimNet Dear Instructors, Our content delivery network provider has added a new range of IP addresses that our SimNet content can be delivered through. This means that there are more servers providing access to SimNet, further increasing reliability and service. Please have your IT administrator allow access to the new IP range highlighted below and verify that the existing ones are also in the system. | | | | ------------------- | ------------------------------- | | ***CIDR Notation*** | ***CIDR Address Range*** | | 69.28.128.0/18 | 69.28.128.0 – 69.28.191.255 | | 68.142.64.0/18 | 68.142.64.0 – 68.142.127.255 | | 208.111.128.0/18 | 208.111.128.0 – 208.111.191.255 | | **69.164.0.0/18** | **69.164.0.0 – 69.164.63.255** | | 50.56.137.48/32 | 50.56.137.48 – 50.56.137.48 | For access to the complete optimization guide, please click [here](http://mhdemo.simnetonline.com/Help/CourseManager/PDF/SimNetOnlineBP-Optimization.pdf?v4). Should you or your IT administrator have any questions or concerns, please contact our Customer Experience Team at [http://mpss.mhhe.com/contact.php](http://www.up0.net/c.html?ufl3\&rtron\&seaxf,syxx,1c5j,emw7,mdyo,5h4l,bq4j). Thank you for your continued support, The SimNet Team --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://help.simnetonline.com/blog/2012-posts/updating-ip-address-for-simnet.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.