Setting DNS TTL to 0 for specific DNS names and IPs

A company we do business with has a service we are trying to contact over the internet. They have requested that we set the TTL for their DNS and IPs on a specific port to 0. Im having a hard time understanding what they are asking for. I thought that
DNS ttl is generally set by the Registrar. And can you even have ttl on an ip address? That doesnt make any sense tome. They are asking for screen shots of nslookups of 3 ips on port 1443 and they want to see the ttl set to 0. How would I do that on SBS2011/Server2008r2?
Obvously I only want this on the 3 ips and the dns name, I dont want to set the whole DNS infrastructre to a ttl of 0.

Sounds screwy to me!
Robert Pearman SBS MVP
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