ServiceNow Instance NAT Address is Changing but not the IP Address ⓘNote: The information below is intended for any reader managing ServiceNow instances. Overview If your ServiceNow instance is getting a new outbound network address, here's what you need to know: What's happening?Your instance's outbound network address (NAT) is changing. Your instance's main IP address is not changing, so most access will not be affected. However, systems that connect from ServiceNow outbound may need updates. We share the new NAT Addresses as part of the change request. What you need to do Review your integrations If you have systems that ServiceNow connects to (APIs, webhooks, data syncs), check if they allowlist our IP addressIf they do, you'll need to update them with the new NAT addressesShare the new NAT addresses with your integration owners Check your Single Sign-On (SSO) If you use SSO, your IT team may need to update those settings to recognize the new outbound address Notify your security/firewall team They should be aware of the change in case they monitor outbound trafficShare the new NAT addresses with your security/firewall team What stays the same Your main instance IP address and URL don't changeInternal users accessing ServiceNow normally won't see any difference Timeline We'll provide the new NAT addresses in advance via the change request Questions?If you're not sure what applies to your setup, reach out to Now Support. What if my IP and NAT are both changing? See KB2926904 Revision Log... (Last updated: dd-mmm-202y) VersionPublishedSummary of Changes1.005-15-2025Initial version