BIND started replying to queries for .com with .COM

Tony Finch dot at
Wed Mar 30 12:23:35 UTC 2016

Phil Mayers <p.mayers at> wrote:
> What is considered the source of the ownername for, say, "com."?

It should be the root zone master file.

However authoritative server implementations differ in whether they echo
the query case or preserve the master case. e.g.
(running Verisign ATLAS) echoes case, (running BIND)
preserves case. is amusing because it runs a load
balancer in front of BIND, Knot, and NSD; Knot and NSD echo case, so
K-root's case handling behaviour is unpredictable.

f.anthony.n.finch  <dot at>  -  I xn--zr8h punycode
Southeast Iceland: Cyclonic, mainly easterly at first in west, 5 to 7,
increasing gale 8 at times in west. Moderate or rough. Snow showers. Moderate,
occasionally very poor.

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