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A Tier 2 network is an Internet service provider which engages in the practice of peering with other networks, but which also purchases IP transit to reach some portion of the Internet.
Tier 2 providers are the most common Internet service providers, as it is much easier to purchase transit from a Tier 1 network than to peer with them and attempt to become a Tier 1 carrier.
The term Tier 3 is sometimes also used to describe networks who solely purchase IP transit from other networks to reach the Internet.
|Name||AS Number||August 2020 degree||Reason|
|Hurricane Electric||6939||8092||IPv4: Purchases transit from Telia Carrier/AS1299. |
IPv6: Does not provide IPv6 routing/connectivity to Cogent/AS174.
|Telkom Indonesia International||7713||2833||Purchases transit from Level3/AS3356, Cogent/AS174, Telia Carrier/AS1299, NTT America/AS2914, Telecom Italia Sparkle/AS6762, Tata Communications/AS6453.|
|RETN||9002||1446||Purchases transit from Level 3/AS3356.|
|meerfarbig||34549||688||Purchases transit from Telia Carrier/AS1299, Global Telecom & Technology (GTT)|
|Korea Telecom||4766||621||Purchases transit from Cogent/AS174, Telia Carrier/AS1299, Tata Communications/AS6453, Hurricane Electric/AS6939, Global Telecom & Technology (GTT)/AS4436, Sprint/AS1239.|
|Fibrenoire||22652||527||Purchases transit from Level3/AS3356, Tata Communications/AS6453, GTT/AS3257.|
|SK broadband||9318||489||Purchases transit from Tata Communications/AS6453, Verizon/AS701, Telia Carrier/AS1299, NTT America/AS2914, China Telecom/AS4134&AS4809.|
|TDC||3292||369||Purchases transit from Sprint/AS1239, NTT America/AS2914.|
|Internet Initiative Japan||2497||324||Purchases transit from NTT America/AS2914, Verizon/AS701.|
|Vodafone (formerly Cable and Wireless)||1273||314||Purchases transit from Telia Carrier/AS1299.|
|KDDI||2516||309||Purchases transit from Level3/AS3356, Tata Communications/AS6453, Verizon/AS701, Global Telecom & Technology (GTT)/AS3257, CenturyLink/AS209.|
|PT Mora Telematika Indonesia||23947||293||Purchases transit from NTT America/AS2914, GTT/AS3257, Tata Communications/AS6453.|
|China Telecom||4134/4809||239||Purchases transit from Verizon/AS701.|
|British Telecom||5400||202||Purchases transit from Telia Carrier/AS1299 and NTT America/AS2914, Global Telecom & Technology (GTT)/AS4436.|
|Comcast||7922||195||Purchases transit from Tata Communications/AS6453, NTT America/AS2914.|
|Tele2 (formerly SWIPNet)||1257||192||Purchases transit from Sprint/AS1239, Cogent/AS174.|
|KCOM Group||12390||90||Purchases transit from KPN/AS286, Level 3/AS3356, Cogent/AS174, NTT America/AS2914.|
|Spirit Communications||2711||77||Purchases transit from Level3/AS3356, Cogent/AS174, Telia Carrier/AS1299, NTT America/AS2914, GTT/AS3257, Hurricane Electric/AS6939.|
|Stealth Communications||8002||46||Purchases transit from Tata Communications/AS6453, Cogent/AS174, NTT America/AS2914.|
|Internap||14744||39||Purchases transit from Cogent/AS174, NTT America/AS2914, XO Communications/AS2828, AboveNet/AS6461, CenturyLink/AS209, AT&T/AS7018.|
|FiberRing||38930||36||Purchases transit from NTT America/AS2914, Telia Carrier/AS1299, Tata Communications/AS6453, Cogent/AS174.|
|Easynet||4589||9||Purchases transit including NTT America/AS2914, GTT/AS3257.|
|Name||AS Number||August 2020 degree||Reason|
|SG.GS||24482||224||Purchases IP transit from NTT, Cogent and TATA.|
Coverage and customer cone limited to SG.
|Turk Telekom International|
|6663||75||Purchases IP transit from Telia, GTT and NTT.|
Coverage and customer cone limited to TR & CEE.
The Internet is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries a vast range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), electronic mail, telephony, and file sharing.
In computer networking, peering is a voluntary interconnection of administratively separate Internet networks for the purpose of exchanging traffic between the users of each network. The pure definition of peering is settlement-free, also known as "bill-and-keep," or "sender keeps all," meaning that neither party pays the other in association with the exchange of traffic; instead, each derives and retains revenue from its own customers.
The Internet backbone may be defined by the principal data routes between large, strategically interconnected computer networks and core routers of the Internet. These data routes are hosted by commercial, government, academic and other high-capacity network centers, as well as the Internet exchange points and network access points, that exchange Internet traffic between the countries, continents, and across the oceans. Internet service providers, often Tier 1 networks, participate in Internet backbone traffic by privately negotiated interconnection agreements, primarily governed by the principle of settlement-free peering.
A Tier 1 network is an Internet Protocol (IP) network that can reach every other network on the Internet solely via settlement-free interconnection. Tier 1 networks can exchange traffic with other Tier 1 networks without having to pay any fees for the exchange of traffic in either direction, while some Tier 2 networks and all Tier 3 networks must pay to transmit traffic on other networks.
Voice over Internet Protocol (VoIP), also called IP telephony, is a method and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. The terms Internet telephony, broadband telephony, and broadband phone service specifically refer to the provisioning of communications services over the public Internet, rather than via the public switched telephone network (PSTN), also known as plain old telephone service (POTS).
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AARNet provides Internet services to the Australian education and research communities and their research partners.
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