Three codes could be found in the HANK JOHNSON: THE EXOGENOUS ERA post on the Investigate Ingress blog.
[1] pxu24drestnce539jc
[2] bqa79qisseioe528ny
[3] knt64puetancn763vu
Code #1, #2 & #3
Observations
Notice how every code is the same length? How can you read them so that it makes sense
Spoiler