AS37900

Summary

Country	Japan
Organization	NTT Communications Corporation
Domain	ntt.com
Number of IPv4	3,328
Number of IPv6	4.8357× 1024
AS Type	Business
Registry	JPNIC
Allocated	January 01, 1970 (about 56 years ago)
Updated	March 13, 2021 (about 4 years ago)

IP Ranges

AS37900 announces 7 IPv4 ranges and 4 IPv6 ranges.

That's a total of 3,328 IPv4 addresses and 4.8357× 10²⁴ IPv6 addresses.

Prefix	Organization	Size	Registry	Status
202.2.88.0/22	NTT Communications Corporation	1,024	APNIC	ASSIGNED PORTABLE
202.2.89.0/24	NTT Communications Corporation	256	APNIC	ASSIGNED PORTABLE
202.2.90.0/24	NTT Communications Corporation	256	APNIC	ASSIGNED PORTABLE
202.2.91.0/24	NTT Communications Corporation	256	APNIC	ASSIGNED PORTABLE
202.4.244.0/24	NTT Communications Corporation	256	APNIC	ASSIGNED PORTABLE
202.4.244.0/22	NTT Communications Corporation	1,024	APNIC	ASSIGNED PORTABLE
202.4.245.0/24	NTT Communications Corporation	256	APNIC	ASSIGNED PORTABLE

Prefix	Organization	Size	Registry	Status
2402:c800:fff1::/48	NTT Communications Corporation	1.2089× 1024	JPNIC
2402:c800:fff3::/48	NTT Communications Corporation	1.2089× 1024	JPNIC
2402:c800:fff4::/48	NTT Communications Corporation	1.2089× 1024	JPNIC
2402:c800:fff6::/48	NTT Communications Corporation	1.2089× 1024	JPNIC

Peers

AS37900 does not have any direct peering agreements. Instead, its global connectivity is achieved through transit providers. While this setup ensures comprehensive reach, future peering could reduce latency and optimize route efficiency.

Upstreams

AS37900 connects to the global Internet via at least 6 upstream providers. In this setup, AS37900 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.

Downstreams

AS37900 currently has no downstream networks, meaning it does not serve as a transit provider to customer networks.