Configure Global Routing Manager Country and Region Prefixes

The Global Routing Manager (GRM) is a DNS service that directs traffic to the closest Point of Presence (PoP).
It resolves requests from clients for the Skyhigh Security proxy service using the following syntax: c<customerID>.wgcs.skyhigh.cloud.
Directing the client to the geographically closest PoP is done based on the geo location of the client (client IP address location) as seen within the DNS request.

For example, if a user is in Italy, they're routed to the closest PoP in Europe, e.g Milan, Italy instead of North America or Asia. If that same user travels to New York City in the USA they would be routed to the closest PoP e.g  New York, unless restricted by administrative policy.

Based on the customer ID provided in the DNS requests, special policies can be applied to override, modify the default DNS resolution. 

Special purpose prefixes for selecting individual countries can be used for localized browsing experience (e.g. getting UK/English localized content even from clients located in France). 

When prefixes are used to enforce the selection of a specific localization, users might experience performance issues if the next available PoP supporting the localization is far away from the client (e.g. US prefix for clients in Europe).

• Country-specific prefix: If the host name for a proxy includes a prefix for an individual country, the IP of the closest PoP supporting the country is returned for the DNS request. This PoP may not necessarily be in the country, hence we call this vPoP. 

What is a vPOP?

• This is a geo located, Virtual Point of Presence (vPOP). It is served from a data center (DC) that might be located outside of the mapped country. E.g., Prague in the Czech Republic is served by DC’s from Germany, France, UK, Italy and the Netherlands.

For special cases also region prefixes exist:

• Region-specific prefix: If the host name for a proxy includes a prefix for a larger region, a corresponding IP from the closest PoP in that region / supporting that region is returned for the DNS request. 

Syntax:

• <prefix>.c<customerID>.wgcs.skyhigh.cloud
• <prefix>.c<customerID>.hybrid.skyhigh.cloud for WPS2 Hybrid customers using Skyhigh Client Proxy (SCP) 

 Please refer to the following examples:

• Using the country-specific region prefix for the United Kingdom for Skyhigh Security Service Edge:
  uk.c12345678.wgcs.skyhigh.cloud
   
• Using the country-specific region prefix for the United Kingdom for WPS Hybrid customers using SCP:
  uk.c12345678.hybrid.skyhigh.cloud

For more details, see Allow IP Address Ranges for Points of Presence.

For information about other IP addresses, see Lists of IP Addresses and Other Parameters for Use in Network Configuration.

If your company has special requirements to keep traffic in a particular geography or location, please raise a Support ticket including your Tenant ID and specifics on geofencing required for your business. 

Customers remain at all times responsible to ensure that their usage and deployment of the product or service complies with applicable laws and regulations.

Prefix List:

The following prefixes are supported: