[kibibu]

Some of those headers are generated by the Heroku infrastructure

https://devcenter.heroku.com/articles/http-routing

    > X-Forwarded-For
    > X-Forwarded-Proto
    > X-Forwarded-Port
    > X-Request-Start
    > X-Request-Id
    > Via

Plus

    > X-Request-Id

Are all Heroku-generated headers

[wyattjoh]

Exactly. I wasn't sure at the time what the name for the Verizon headers was, so I just showed all of them.