I Think I've Been Hacked

I received an email from Google concerning suspicious activity on my email account. They provided me with the IP of the source and suggested a password change. I did that, so if you do not get an expected email from me, please put it down to me not remembering my new password. I looked up the IP they sent and I got the following info. It's interesting in a geek sort of way, but I still do not know much about the source. Anyway...be careful out there. Feces happen.

IPv6 address:	2600:3c01::f03c:91ff:fe84:b1ba
IPv6 expanded:	2600:3c01:0000:0000:f03c:91ff:fe84:b1ba
IPv6 decimal:	50511880863631184802145314315652346298
WHOIS data:	whois data is currently unavailable [GL85-85]. Try again in 20 hours, 34 min.
Internet service provider:	Hurricane Electric
Organization:	Hurricane Electric
Country name:	United States
Country ISO alpha-2 code:	US
State:	New Jersey
City:	Absecon
DMA code:	504
Timezone:	America/New_York
Longitude:	-74.4957
Latitude:	39.4284
Reverse DNS in-addr.arpa:	Host a.b.1.b.4.8.e.f.f.f.1.9.c­.3.0.f.0.0.0.0.0.0.0.0.1.­0.c.3.0.0.6.2.ip6.arpa not found: 3(NXDOMAIN)
Reverse DNS last updated:	1437449118 - 0 seconds ago
Reverse DNS next update:	1438053918 - in 7 days
Operating System	Windows 7
Browser	Chrome 35.0.1916.153
Device Type	Desktop
User Agent String	Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.153 Safari/537.36 SE 2.X MetaSr 1.0
Bot/spider	No
Record views	14
This IP pageloads:	1