wireless.gln.com has no NS records.
NS records for this zone are defined at gln.com.
NS records for this zone are defined at gln.com.
Question and response
Question
dig wireless.gln.com. NS
Answer
The response has no answer records.
Authority
gln.com. 900 SOA ns-678.awsdns-20.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0