[dns-operations] underscores in domain names
dot at dotat.at
Tue Sep 12 10:13:29 UTC 2017
Jim Reid <jim at rfc1035.com> wrote:
> > On 12 Sep 2017, at 10:19, James Stevens <James.Stevens at jrcs.co.uk> wrote:
> > It would be impossible to disagree - just interesting to see that
> > underscore in public names is astonishingly common - like SRV records,
> > so I assumed underscore was reasonably well supported.
> It is perfectly legal to use underscores in domain names. They can't be
> used in hostnames.
Nor in mail domains :-)
So if you put a _ in a fake TLD, you can't use it for very much ...
f.anthony.n.finch <dot at dotat.at> http://dotat.at/ - I xn--zr8h punycode
German Bight, Humber, Thames, Dover, Wight: West or southwest 5 to 7,
increasing gale 8 or severe gale 9, perhaps storm 10 later. Moderate or rough,
becoming very rough, occasionally high later. Showers, rain later. Good
becoming moderate or poor later.
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