ENUM-Config on SBC

Hello all,

Regarding the configuration ENUM on SBC, I'm wondering whether the following parameter allows us to check whether the EUM server is UP or down.

health-query-number                     +44612345678

In order to check this finding I've set a wrong number in the enum-config.

health-query-number                     44612345678 --> it should be +44612345678

then I've checked the status and the lookup of the ENUM:

To my big surprise the ENUM servers are OK while I was expecting that they should be down as the health-query-number is a wrong one.

SBC01712# show enum status
Showing 1 Enum Agents: state=Active
Enum Agent: spnInterrogation servers:
  1=[0:248]a.b.c.d:53 OK
  2=[0:248]e.f.g.h:53 OK
SBC01712#
SBC01712# show enum lookup spnInterrogation 44612345678 
Invalid Telephone Number, it should be something like +7813245678