Tier 1 network

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Tier 1 network

A top-level network on the Internet. There are 16 Tier 1 networks worldwide. In the U.S., AT&T, CenturyLink, GTT, Verizon and the Zayo Group are Tier 1. Germany, U.K, France, Hong Kong, Japan, India, Italy, Spain and Sweden host the non-U.S. networks.

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ARPAnet was the original Internet backbone, which was superseded by the National Science Foundation Network (NSFnet) in the late 1980s.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.
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References in periodicals archive ?
The compact platform leverages packet switching software capabilities deployed in Tier 1 carrier networks.
CommScope (COMM) upgraded to Outperform from Market Perform at Northland with analyst Tim Savageaux saying he believes the company's unique mix of exposure to Tier 1 carrier investment in both fiber optic and 4G/5G wireless infrastructure offers compelling value following the sharp pullback in shares after only a "fairly modest" cut to its EPS expectations.
Also, the acquisition of Mblox provides CLX with a strong footprint in the US, UK and Australian markets and a large number of additional direct Tier 1 carrier connections.
With a distinguished heritage of technology innovation and service excellence, forged by over 35 years of experience and expertise in Tier 1 carrier networks, Coriant is helping its global customers maximize the value of their network infrastructure as demand for bandwidth explodes and the communications needs of businesses and consumers continue to evolve.
KORE delivers choice, reliability and global native coverage through multi- carrier and Tier 1 carrier cellular and satellite network services including LTE, GSM and CDMA - as well as advanced applications to easily manage IoT connected devices.
Proven in Tier 1 carrier customer field trials, the Coriant Transcend SDN Solution is an open, programmable, and automated software suite that supports efficient implementation of workflow-optimized NaaS applications.
The management team has decades of experience in major Tier 1 carrier companies and operates from offices in London, Dublin, New York, Chicago and Sao Paulo.
PEG Bandwidth will leverage a next generation 4G network infrastructure as it continues to roll out and support new 4G and LTE network construction for national Tier 1 carrier customers.
Wiggins also cited reports that say two-thirds of Tier 1 carrier spending is in multi-service.
BSQUARE Corporation (Nasdaq:BSQR), a software solutions provider to the embedded device community, announced on Wednesday (25 March) it will port software company Adobe Systems Incorporated (Nasdaq:ADBE) Flash technology onto Google's (Nasdaq:GOOG) Android platform for a global Tier 1 carrier.
Deployments of the ADTRAN Gfast fiber extension solutions are currently underway in Tier 1 carrier networks in Australia, North America and Europe as network operators globally seek out methods to accelerate the delivery of symmetrical gigabit service capabilities, maximizing the revenue potential of their fiber investments and ensuring all premises passed can economically and efficiently transition to becoming connected premises.