query

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... Replacement The next NAME to query for NAPTR, SRV, or address ...

... DNS domain-name before making queries on it. ...

... domain-name MUST be used in SRV queries with NO transformations. Any given NAPTR record ...

... domain-name to be used for SRV queries that may or may not contain the SRV standardized underscore characters. NAPTR applications ...

... domains or use them according to how the SRV specification structures its query domains. ...

... The record returned from the query on "gatech.edu" might look like: ...

... interaction with DNS. Any backslashes in a regexp must be entered twice in a zone file in order to appear once in a query response. More seriously, the need for double backslashes has probably not been tested by all implementors ...