freeswitch@fs_playground> sofia_dig sip-in.bestfone.com
Preference          Weight       Transport            Port         Address
================================================================================
         1           0.050             udp            5060      172.104.229.98
         1           0.150             udp            5060      80.85.85.46


root@fs_playground:/etc/freeswitch/dialplan# dig _sip._udp.sip-in.bestfone.com SRV

; <<>> DiG 9.11.5-P4-5.1-Debian <<>> _sip._udp.sip-in.bestfone.com SRV
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44820
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;_sip._udp.sip-in.bestfone.com. IN      SRV

;; ANSWER SECTION:
_sip._udp.sip-in.bestfone.com. 300 IN   SRV     10 75 5060 sip5.bestfone.com.
_sip._udp.sip-in.bestfone.com. 300 IN   SRV     10 25 5060 sip7.bestfone.com.

;; Query time: 79 msec
;; SERVER: 108.61.10.10#53(108.61.10.10)
;; WHEN: Tue May 12 12:00:07 EDT 2020
;; MSG SIZE  rcvd: 132