AS103
Northwestern University — northwestern.edu
Summary
| Country |
 United States
|
| Organization | Northwestern University |
| Domain | northwestern.edu |
| Number of IPv4 | 150,016 |
| Number of IPv6 | 4.6423× 1026 |
| AS Type | Education |
| Registry | ARIN |
| Allocated | April 09, 1987 (about 38 years ago) |
| Updated | April 02, 2012 (about 13 years ago) |
IP Ranges
AS103 announces 26 IPv4 ranges and 2 IPv6 ranges.
That's a total of 150,016 IPv4 addresses and 4.6423× 1026 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 8.28.178.0/23 |
Northwestern University
|
512 | ARIN | REALLOCATION |
| 8.30.248.0/22 |
Level 3 Parent, LLC
|
1,024 | ARIN | ALLOCATION |
| 38.124.97.0/24 |
Psinet, Inc.
|
256 | ARIN | ALLOCATION |
| 129.105.0.0/16 |
Northwestern University
|
65,536 | ARIN | ALLOCATION |
| 165.124.0.0/17 |
Northwestern University
|
32,768 | ARIN | ALLOCATION |
| 165.124.17.0/24 |
Northwestern University
|
256 | ARIN | ALLOCATION |
| 165.124.128.0/19 |
Northwestern University
|
8,192 | ARIN | ALLOCATION |
| 165.124.160.0/20 |
Northwestern University
|
4,096 | ARIN | ALLOCATION |
| 165.124.176.0/21 |
Northwestern University
|
2,048 | ARIN | ALLOCATION |
| 165.124.184.0/23 |
Northwestern University
|
512 | ARIN | ALLOCATION |
| 165.124.186.0/24 |
Northwestern University
|
256 | ARIN | ALLOCATION |
| 165.124.192.0/19 |
Northwestern University
|
8,192 | ARIN | ALLOCATION |
| 165.124.224.0/21 |
Northwestern University
|
2,048 | ARIN | ALLOCATION |
| 165.124.232.0/22 |
Northwestern University
|
1,024 | ARIN | ALLOCATION |
| 165.124.240.0/20 |
Northwestern University
|
4,096 | ARIN | ALLOCATION |
| 192.5.143.0/24 |
Northwestern University
|
256 | ARIN | ALLOCATION |
| 192.26.85.0/24 |
Northwestern University
|
256 | ARIN | ALLOCATION |
| 192.26.86.0/23 |
Northwestern University
|
512 | ARIN | ALLOCATION |
| 192.31.155.0/24 |
Northwestern University
|
256 | ARIN | ALLOCATION |
| 192.31.253.0/24 |
Northwestern University
|
256 | ARIN | ALLOCATION |
| 199.74.64.0/18 |
Northwestern University
|
16,384 | ARIN | ALLOCATION |
| 199.249.165.0/24 |
Northwestern University
|
256 | ARIN | ALLOCATION |
| 199.249.166.0/24 |
Northwestern University
|
256 | ARIN | ALLOCATION |
| 199.249.167.0/24 |
Northwestern University
|
256 | ARIN | ALLOCATION |
| 199.249.168.0/24 |
Northwestern University
|
256 | ARIN | ALLOCATION |
| 199.249.169.0/24 |
Northwestern University
|
256 | ARIN | ALLOCATION |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2620:10d:2000::/40 |
Northwestern University
|
3.0949× 1026 | ARIN | ALLOCATION |
| 2620:10d:2000::/41 |
Northwestern University
|
1.5474× 1026 | ARIN | ALLOCATION |
Peers
AS103 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
AS103 connects to the global Internet via at least 7 upstream providers. In this setup, AS103 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.
Downstreams
AS103 currently has no downstream networks, meaning it does not serve as a transit provider to customer networks.