InetAddress can't resolve some domains, throws java.net.UnknownHostException, but domains actually work in the browser

InetAddress fails to resolve the following domains:

kymcolux.com

shencan.net

zoocore.com

Tested on my home computer and a VPS with:

InetAddress addr1 = InetAddress.getByName("kymcolux.com");

https://httpstatus.io/ also can't fetch the URLs.

InetAddress throws:

java.net.UnknownHostException: zoocore.com: unknown error

    at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)

    at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:907)

    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1302)

    at java.net.InetAddress.getAllByName0(InetAddress.java:1255)

    at java.net.InetAddress.getAllByName(InetAddress.java:1171)

    at java.net.InetAddress.getAllByName(InetAddress.java:1105)

    at java.net.InetAddress.getByName(InetAddress.java:1055)

    at Main.main(Main.java:16)

Strangely they work in my browser.

UPDATE
Tried different DNS servers (Google & OpenDNS). Still the same result.

Any ideas? Thanks!