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Lots of people look at IP addresses. Most of the people who find the "1e100.net" records in their network logs would have no easy way of knowing that 1.2.3.4 (o
by peterwwillis 8y ago
Lots of people look at IP addresses. Most of the people who find the "1e100.net" records in their network logs would have no easy way of knowing that 1.2.3.4 (or whatever) was a Google IP. The reverse lookup allows you to easily find out what domain it belongs to (1e100.net, which a Google search shows is a Google address).
You can also embed other information in the reverse name, such as the region, datacenter, floor, switch, rack, or unit number of the machine. It can be incredibly easy to locate the machine by just looking at its reverse name. "Oh, 1.2.3.4 is in us-east-1, on floor 3, in rack 27, unit 5. Let me go check the network cable."