AS1299 — Arelion (formerly Telia Carrier)

About AS1299

Arelion (formerly Telia Carrier) operates one of the world's largest internet backbone networks. AS1299 is a Tier 1 transit provider with one of the most extensive fiber-optic networks globally.

What is an Autonomous System Number (ASN)?

An Autonomous System Number (ASN) is a unique identifier assigned to a group of IP networks that operate under a single administrative domain with a clearly defined routing policy. ASNs are essential to the Border Gateway Protocol (BGP), which is the routing protocol that enables different networks on the internet to exchange routing information.

ASNs are assigned by Regional Internet Registries (RIRs) such as ARIN, RIPE NCC, APNIC, LACNIC, and AFRINIC. Originally, ASNs were 16-bit numbers (0-65535), but the pool was expanded to 32-bit (0-4294967295) to accommodate the growing number of networks.

Every ISP, cloud provider, large enterprise, and content delivery network typically has one or more ASNs. When you trace the path of internet traffic, you can see it crossing between different autonomous systems as it travels from source to destination.

Types of Autonomous Systems

• ISP (Internet Service Provider) - Networks that provide internet access to end users and businesses
• Enterprise - Large companies that operate their own networks (e.g., Google, Apple, Meta)
• CDN (Content Delivery Network) - Networks optimized for delivering content globally (e.g., Cloudflare, Akamai)
• Cloud - Cloud computing providers offering infrastructure services (e.g., AWS, Azure, GCP)
• Hosting - Data center and web hosting providers
• Education - Academic and research networks