Question and response
Question
dig _sip._udp.insmartcloud.com. SRV
Answer
_sip._udp.insmartcloud.com. 600 SRV 10 50 5060 sbc1.insmartcloud.com.
_sip._udp.insmartcloud.com. 600 SRV 10 50 5060 sbc2.insmartcloud.com.
_sip._udp.insmartcloud.com. 600 SRV 10 50 5060 sbc3.insmartcloud.com.
_sip._udp.insmartcloud.com. 600 SRV 10 50 5060 sbc4.insmartcloud.com.
Authority
insmartcloud.com. 172800 NS ns-1193.awsdns-21.org.
insmartcloud.com. 172800 NS ns-1846.awsdns-38.co.uk.
insmartcloud.com. 172800 NS ns-350.awsdns-43.com.
insmartcloud.com. 172800 NS ns-888.awsdns-47.net.
Additional
sbc1.insmartcloud.com. 300 A 83.137.183.164
sbc2.insmartcloud.com. 300 A 83.137.183.165
sbc3.insmartcloud.com. 300 A 83.137.183.170
sbc4.insmartcloud.com. 300 A 83.137.183.171
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0