ww1.tigo.com.bo has no NS records.
NS records for this zone are defined at tigo.com.bo.
NS records for this zone are defined at tigo.com.bo.
Question and response
Question
dig webbo.tigocloud.net. NS
Answer
The response has no answer records.
Authority
tigocloud.net. 900 SOA ns-2010.awsdns-59.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0