107-137-221-93.lightspeed.gnvlsc.sbcglobal.net has no NS records.
NS records for this zone are defined at lightspeed.gnvlsc.sbcglobal.net.
NS records for this zone are defined at lightspeed.gnvlsc.sbcglobal.net.
Question and response
Question
dig 107-137-221-93.lightspeed.gnvlsc.sbcglobal.net. NS
Answer
The response has no answer records.
Authority
lightspeed.gnvlsc.sbcglobal.net. 300 SOA ns0.attdns.com. eiss-dns.att.com. 2019040901 3600 1800 2592000 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0