AS5723
Johns Hopkins University — jhu.edu
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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 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS5723's role in extending Internet access beyond its own infrastructure.