what is the difference between a tier 1 and tier 2 isp?
Tier 1 networks provide global network coverage. There are only a dozen Tier 1 providers in the world, although there are some Tier 2 providers that may claim to be Tier 1 ISPs. ... A Tier 2, on the other hand, is a provider that connects between Tier 1 and Tier 3 internet service providers.