Tier 1 network

(redirected from Tier 1 ISP)

Tier 1 network

A top-level network on the Internet. There are about a dozen Tier 1 networks, most of which are in the U.S., including AT&T, Global Crossing, Level 3, Qwest, Sprint and Verizon (originally UUNET). Known as "settlement-free peering," Tier 1 networks are private networks that allow traffic from other Tier 1 networks to transit their backbones without a fee. See peering and IXP.

Tier 2 and Tier 3 Networks
Tier 2 networks peer with some networks without fees but pay to reach a large portion of the Internet. Tier 3 networks always pay fees to obtain access to the larger backbones.

ARPAnet to NSFnet to Tier 1
ARPAnet was the original Internet backbone, which was superseded by the National Science Foundation Network (NSFnet) in the late 1980s. NSFnet was replaced by Tier 1 networks in the mid-1990s when the Internet became a commercial venture. See ARPAnet, NSFnet and Internet.
References in periodicals archive ?
The University of Arizona is seeking an experienced Tier 1 ISP with demonstrated qualifications to supply connectivity to the commodity Internet.
However, Claravall claimed that PLDT is actually pushing for IP transit and not IP peering since under an IP peering arrangement, the internet traffic is freely exchanged between the Tier 1 ISP and each ISP provides the other partner with access to its own customers and vice versa but not to the entire internet.
The point is, this broader business relationship enabled Comcast to have settlement-free peering with Level 3, a Tier 1 ISP in the U.
As demand for our Internet access services continues to rapidly increase, it is important that we can rely on a Tier 1 ISP, like Teleglobe, to provide global Internet reach to our customers as well as quick responses as we grow," said Jonathan Somen, Managing Director of AccessKenya.
Through the use of the OptimizedIP services of Arbinet, the world's largest electronic marketplace for communications trading with more than 1,100 connected carriers, DigiMeld sends its traffic via the best performing major Tier 1 ISP at any given time to further enhance viewer experience.
The so-called Tier 1 ISPs are the set of ASes that do not purchase transit from any other AS, and thus must peer with every other Tier 1 ISP.
A tier 1 ISP, PIPEX Communications has one of the UK's most extensive communications networks with over 100 Points of Presence (PoPs) nationwide.
99999% level of availability and our Woodbine uplink is directly connected by fiber to a Tier 1 ISP.
About Netmagic: Over the past decade, Netmagic has steadily grown from a niche service provider to a full-scale Tier 1 ISP.
We've grown from a local dialup provider to a robust Tier 1 ISP with over a hundred client installations around the world," said Michael Kalai, president of Netmagic.
a Malaysian Tier 1 ISP, is set up with a focused objective to be an innovative company that provides quality solutions to customers' Internet connectivity, communication and e-commerce needs.