AS5723

Summary

Country	United States
Organization	Johns Hopkins University
Domain	jhu.edu
Number of IPv4	136,192
Number of IPv6	7.9228× 1028
AS Type	Education
Registry	ARIN
Allocated	September 06, 1995 (about 30 years ago)
Updated	September 08, 2020 (about 4 years ago)

IP Ranges

AS5723 announces 9 IPv4 ranges and 1 IPv6 range.

That's a total of 136,192 IPv4 addresses and 7.9228× 10²⁸ IPv6 addresses.

Prefix	Organization	Size	Registry	Status
128.220.0.0/16	Johns Hopkins University	65,536	ARIN	ALLOCATION
162.129.0.0/16	The Johns Hopkins Medical Institutions	65,536	ARIN	ALLOCATION
192.12.13.0/24	Johns Hopkins University	256	ARIN	ALLOCATION
192.12.14.0/24	Johns Hopkins University	256	ARIN	ALLOCATION
198.57.32.0/21	Johns Hopkins All Children's Hospital, Inc.	2,048	ARIN	ALLOCATION
198.57.37.0/24	Johns Hopkins All Children's Hospital, Inc.	256	ARIN	ALLOCATION
198.57.39.0/24	Johns Hopkins All Children's Hospital, Inc.	256	ARIN	ALLOCATION
198.57.40.0/22	Johns Hopkins All Children's Hospital, Inc.	1,024	ARIN	ALLOCATION
204.124.184.0/22	Johns Hopkins All Children's Hospital, Inc.	1,024	ARIN	ALLOCATION

Prefix	Organization	Size	Registry	Status
2606:2b00::/32	Johns Hopkins University	7.9228× 1028	ARIN	ALLOCATION

Peers

AS5723 actively fosters the following peering relationships that enhance network performance through direct, settlement-free traffic exchange. Even with a modest number of peers, each connection serves as a strategic asset—optimizing routing, reducing latency, and minimizing transit costs.

Upstreams

AS5723 connects to the global Internet via at least 4 upstream providers. In this setup, AS5723 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.

Downstreams

AS5723 currently has no downstream networks, meaning it does not serve as a transit provider to customer networks.