[dns-operations] Does anyone have figures for SRV reachability?

[Florian Weimer]

On 11/18/2016 04:27 PM, Phillip Hallam-Baker wrote:
> I am looking for a reference to a recent study showing the feasibility of
> using SRV for discovery. That is, how likely an SRV resolution is likely to
> succeed versus being blocked by idiot legacy infrastructure.
>
> What I am look for here is figures and not an opinion. I am pretty sure
> that SRV records are reachable from 99% of all net locations these days.
> But being pretty sure isn't the same thing as measurement.

Corporate networks sometimes use something else beside DNS for managing 
name resolution.  SRV lookups will work, but it's difficult to align 
them with the rest of the internal domain namespace.

Florian