"speed tests" (the consumer oriented public sort, eg: speedtest.net) are a joke because Oookla (et.al) encourage the ISPs to run a local copy of it .. and naturally the configuration favors the *most local* one by default .. so unless you're paying attention or use a geek-oriented test (of which there is no shortage, but not quite as easy to use) you are just testing the "local loop" portion of your connection.
I should point out here that the CIR (bandwidth you are promised) is generally only stated in terms of the local loop, since normally that's all that your access-ISP has control over.
FWIW you can download the Oookla (speedtest.net) client to run on your own network, which is rather handy if you want to test out that fancy 802.11ac wifi setup (or whatever).