Google DNS can't resolve my domain

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Dear Google,

I have problem SERVFAIL when try to lookup my doamin using @8.8.8.8 but that not happen when dig
@4.2.2.2 and when using OpenDNS

my domain is deltadunia.com, samudraenergy.com and ssbengara2.com

Would you helping me why this can be happened

> server 8.8.8.8
Default Server:  google-public-dns-a.google.com
Address:  8.8.8.8

> deltadunia.com
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

*** google-public-dns-a.google.com can't find deltadunia.com: Server failed
> samudraenergy.com
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

*** google-public-dns-a.google.com can't find samudraenergy.com: Server failed
> ssbengara2.com
Server:  google-public-dns-a.google.com
Address:  8.8.8.8

*** google-public-dns-a.google.com can't find ssbengara2.com: Server failed
> server 4.2.2.2
Default Server:  b.resolvers.Level3.net
Address:  4.2.2.2

> deltadunia.com
Server:  b.resolvers.Level3.net
Address:  4.2.2.2

Non-authoritative answer:
Name:    deltadunia.com
Address:  111.235.137.30

> samudraenergy.com
Server:  b.resolvers.Level3.net
Address:  4.2.2.2

Non-authoritative answer:
Name:    samudraenergy.com
Address:  202.27.31.20

> ssbengara.com
Server:  b.resolvers.Level3.net
Address:  4.2.2.2

Non-authoritative answer:
Name:    ssbengara.com
Addresses:  198.105.244.11
          104.239.213.7

Regards
Harri

[IT NS]

Dear Google,

I have problem SERVFAIL when dig @8.8.8.8 but that not happen when dig

@4.2.2.2 and when using OpenDNS
my domain is deltadunia.com, samudraenergy.com and ssbengara2.com

Would you helping me why this can be happened

Regards
Harri - ITNS

[Shen Wan]

This is because the domains fail DNSSEC validation. Please enter your domain at dnsviz.net for an explanation: http://dnsviz.net/d/deltadunia.com/dnssec/, http://dnsviz.net/d/samudraenergy.com/dnssec/, http://dnsviz.net/d/ssbengara2.com/dnssec/.