Comparison of IPv6 support by major transit providers

Internet Protocol Version 6 (IPv6) is not yet universally available as of 2011, but support by major ISPs and transit providers is steadily increasing. Many major transit providers offer an IPv6 service to their customers, but do not have a ubiquitous view of all other IPv6 networks. Other aspects of this service vary widely from one major ISP to the next.

Network	ASN	Routes Carried[note 1]	Customer Routes[note 2]	Maximum Prefix Length	Partitioned From[note 3]	Updated[note 4]
route-views6[note 5]		7,443[1]		/48		2011-11-17
AT&T	7018	6,969				2011-09-01
Cogent Communications[note 6]	174	5,224			AS6939 AS15169 AS19151 AS32934	2011-08-09
Comcast	7922	4,648	17	/48		2011-03-11
Global Crossing	3549	6,737	2,000			2011-09-01
Hurricane Electric	6939	7,361	4,121	/48	AS174	2011-11-17
Internap	10913	6,807				2011-08-10
Internet 2	11537	6,737	639			2011-09-01
Internode	4739	7,022				2011-09-01
Level 3 Communications	3356	7,069	1,974	/48		2011-11-03
Neotelecoms	8218	7,269	117	/48		2011-10-31
nLayer Communications	4436	6,850	134	/48		2011-09-01
NTT Communications	2914	6,871	1,493	/48		2011-09-01
Qwest	209	6,936	205	/48		2011-09-01
Savvis[note 7]	3561	4,210	10	/48		2010-12-21
Sprint	1239	3,936	195	/48		2011-01-26
Sprint[note 8]	6175	3,766		/48		2010-12-22
Tata Communications	6453	5,033	480			2011-04-21
Telecom Italia Sparkle	6762	6,792	157	/48		2011-09-01
TeliaSonera International Carrier	1299	6,732	1,383	/48		2011-09-01
Tinet	3257	6,900	1,498	/48		2011-09-01
UPC	6830	3,875		/48		2011-09-01
Verizon Business	701	7,348	253	/48		2011-11-16
XO Communications	2828	3,779	93	/48		2010-12-23

1. ^ Number of routes advertised to customers
2. ^ Number of routes advertised over non-customer BGP peering sessions
3. ^ Some networks do not have global reach-ability to some other major networks.
4. ^ This data changes frequently as IPv6 adoption progresses.
5. ^ Number of unique IPv6 routes (/48 or shorter) visible on route-views6.routeviews.org MRT, for comparison to transit networks
6. ^ As of 2010-JUL-24, in certain regions Cogent charges a $50 per month fee to configure IPv6 for their customers.
7. ^ Savvis has advised their customers that their backbone is IPv6 capable since 2009. However, they do not have an offering for transit service to customers and to look for offerings in 2012. In addition, Savvis managed hosting and cloud services do not support IPv6, with NO roadmap or release plans announced. (February 2011)
8. ^ Sprint has ceased implimenting new tunnels on their test network and will begin removing them on January 31, 2011 in favor of dual-stack on AS1239.

References

1. ^ http://archive.routeviews.org/route-views6/bgpdata/2011.11/RIBS/rib.20111101.0000.bz2

See also

• Comparison of IPv6 application support
• Comparison of IPv6 support in routers
• Comparison of IPv6 support in operating systems
• IPv6 deployment
• List of IPv6 tunnel brokers
• Peering DB

References