DNS, by its very nature is redundant. So DNS shouldn't just fall over. If it does, you're doing something wrong.

If you absolutely need to go to IP addresses, they should be documented.

Unless DNS is outright wrong, there should not be an issue.

For scrolling: are you staring at active log files? Who isn't using a syslog aggregator? You can easily look up the IP of whatever device that is interesting and filter the log by that IP.