becarpenter-book6/5. Deployment/Deployment by carriers.md

## Deployment by carriers

All the organizations providing or using Internet connectivity services have an associated Autonous System Number (ASN).
APNIC (https://blog.apnic.net/2022/01/06/bgp-in-2021-the-bgp-table/) provides statistics on the evolution of IPv6 support across the ASNs in the world, as observed in the Internet routing tables.

<img src="./Section5_Table2.jpg">

The percentage of IPv6-capable ASNs is growing over the years, which is a ggod sign.
On the other hand, the table does not allow to understand the degree of adoption across the different industries, that is whether the ASNs are associated to a carrier, a service provider or an entreprise.
To zoom in at that level, it is necessary to look at more detailed statistics such as those provided by Akamai (https://www.akamai.com/internet-station/cyber-attacks/state-of-the-internet-report/ipv6-adoption-visualization) or APNIC (https://stats.labs.apnic.net).

Not unsurprisingly, the vast majority of carriers worldwide already support IPv6. Yet, differences exist.
As a general rule, the carriers active in those countries with higher IPv6 adoption also show higher levels of IPv6 utilization.
For example, based on the Akamai statistics, IPv6 adoption in the United States is 51%. Carriers such as AT&T, Comcast, T-Mobile and Verizon all exceed 70% of IPv6 use in their networks.
In Europe, both Belgium and Germany reach 50% of IPv6 traffic. Proximus, Telenet, DT, Telefonica Germany, Versatel and Vodafone Germany range from 50% to 70%.
India shows 51% IPv6 adoption. Carriers there also have high IPv6 rate. Bharti, Reliance Jio and Vodafone India find themselves between 60% and 70%.

Whilst it cannot be gneralized, in countries with lower IPv6 adoption the local carriers also tend to be slower in enabling IPv6.
For example, European countries such as Spain, Italy and Poland show respectively 4.5%, 7% and 13.5% adoption. 

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