Reduce ACL Entries for SiteBacker
SB comes from these ranges:
156.154.35-41
156.154.76-78
156.154.80
156.154.85
156.154.99
156.154.119
156.154.122-123
156.154.180-182
203.119.15.X
So we could reduce the list to this:
2610:a1:3000::/36
156.154.35.0/24
156.154.36.0/22
156.154.40.0/23
156.154.62.0/23
156.154.64.0/20
156.154.80.0/24
156.154.85.0/24
156.154.99.0/24
156.154.119.0/24
156.154.120.0/21
156.154.176.0/21
203.119.15.0/24
This will whitelist more UltraDNS IP space than is used by SiteBacker/Traffic Controller.
If you wish to whitelist as few IP addresses as possible you should continue to use the list of single IP addresses in external documentation.
The above is an option if there is strong desire for fewer entries in ACL.