If you click the IP (http://en.utrace.de/whois/92.122.34.135), it shows that the netblock that IP address is from is owned by Akamai Technologies, a company (an American one, by the way) that provides content mirroring services for many large, high-profile sites, apparently including whitehouse.gov for better performance. The site that you used to look it up is hosted in Germany, and thus gets a server hosted in Germany for lower latency.
They must have multiple servers. I traced it to 118.215.58.135, which is in Singapore.
http://www.ip-adress.com/ip_tracer/118.215.58.135