Might be DNS issues.
Edit: Yes. It is
<Ash-Fox> Dear XName-Availability subscribers,
<Ash-Fox> both ns0 and ns1 DNS servers are under heavy DDoS attack since 4:45 PM
<Ash-Fox> (gmt+2) this afternoon.
<Ash-Fox> The BGP session serving NS0 network is flapping due to a total
<Ash-Fox> saturation of the link, so NS0 is up very intermittently.
<Ash-Fox> ns1 is still online, even if loaded.
<Ash-Fox> We'll keep you updated.
<Ash-Fox> Regards,
<Ash-Fox> --
<Ash-Fox> Yann Hirou
<Ash-Fox> XName Team