ntpdig times out with "no eligible servers" error

ntpdig/sntp consistently times out with oniux with a "no eligible servers" error, even when server ipv4 address is provided.

server: 1.debian.pool.ntp.org

oniux ntpdig -ddd  -t 60 104.152.220.5 
ntpdig: querying 104.152.220.5 (104.152.220.5)
ntpdig: Sent to 104.152.220.5:
e3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 eb f2 ea 6d 4b 74 e0 00 ...........mKt..
ntpdig: no eligible servers