docs: add CVaaS regional URLs

Change-Id: Icb89b804e150d188f2e7742f28aa1374d7537c77

docs/content/connecting/_index.md

@@ -6,6 +6,26 @@ chapter: false
 
 The port used to connect to CVP is 443 for both on-prem and cloud deployments.
 
+## CVaaS URLs
+
+Please note that in case of using CVaaS, the correct regional URL where the CVaaS tenant is deployed must be used.
+The following are the cluster URLs used in production:
+
+| Region | URL |
+|--------|-----|
+| United States 1a | `www.arista.io` |
+| United States 1b | `www.cv-prod-us-central1-b.arista.io`|
+| United States 1c | `www.cv-prod-us-central1-c.arista.io`|
+| Canada | `www.cv-prod-na-northeast1-b.arista.io` |
+| Europe West 2| `www.cv-prod-euwest-2.arista.io` |
+| Japan| `www.cv-prod-apnortheast-1.arista.io` |
+| Australia | `www.cv-prod-ausoutheast-1.arista.io` |
+| United Kingdon | `www.cv-prod-uk-1.arista.io` |
+
+{{% notice warning %}}
+URLs without `www` are not supported.
+{{% /notice %}}
+
 ## Authentication
 
 Our APIs currently support token based authentication.
@@ -50,7 +70,7 @@ The following examples use `python` but Go, Java, or any other language capable
 python -m pip install requests
 ```
 
-#### Example: token from login
+#### Example: token from login (on-prem only)
 
 ```python
 import requests