Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Sergi0's avatar
Sergi0
Icon for Nimbostratus rankNimbostratus
Nov 20, 2017

GTM and company.com

I see example for delegate https://support.f5.com/csp/article/K277 How will it look for company.com?  
application delivery
BIG-IP DNS
eey0re's avatar
eey0re
Icon for Cirrostratus rankCirrostratus
Nov 20, 2017

company.com
is called the zone apex (where the name is the same as the zone). A zone apex cannot be a 
CNAME
- that is a limitation of DNS.

Therefore you cannot use the K277 method, as that describes delegating some other zone to the GTM (called 

wip
) and pointing 
CNAME
records at it.

If you need 

company.com
to be a Wide IP, your GTMs must be authoritative for that zone so that it can answer queries for 
company.com
directly.