christopher-ew.state.gov has no NS records.
NS records for this zone are defined at state.gov.
NS records for this zone are defined at state.gov.
Question and response
Question
dig christopher-ew.state.gov. NS
Answer
The response has no answer records.
Authority
state.gov. 900 SOA o-bimc-dns001.grid.state.sbu. hostmaster.state.gov. 78846 10800 1080 2419200 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0