A new proxy node is being added to the cluster and will appear in the DNS SRV and round-robin A records shortly.
If you have firewall rules or ACLs restricting access to your SIP equipment, please add 188.8.131.52.
The rest of the list:
$ dig +short gvgw.simonics.com. a 184.108.40.206 220.127.116.11 18.104.22.168