How many autonomous systems as are there today on the Internet?

Related questions

1. Why OSPF is called Link State?
2. What is ASN BGP?
3. Why is link state better than distance vector?
4. What is LSA in OSPF?
5. Is OSPF Classful or classless?
6. What is the purpose of BGP?
7. What does ASN stand for in a Web address?
8. What is BGP link?
9. What is BGP used for?
10. What is the difference between BGP and OSPF?

Tags

1. #internet
2. #numbers
3. #types
4. #system
5. #routing
6. #currently
7. #autonomous
8. #alternate
9. #systems
10. #there
11. #private
12. #being
13. #information
14. #number
15. #other
16. #exchanging
17. #public
18. #explored
19. #approaches