Northwestern University
AS103 is Northwestern University (northwestern.edu). It announces 149,504 IPv4 addresses in 22 prefixes, and 3 IPv6 prefixes.
United States· ARIN· allocated 1987-04-09· education
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- United States149,504 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- NWU-AS
- name
- Northwestern University
- org
- NORTHW-9-Z
- org name
- Northwestern University
- org address
- Leverone Hall #G-166, 2001 Sheridan Rd, Evanston, IL, 60208
- org city
- Evanston
- org country
- US
- country
- US
- source
- arin
- created
- 1987-04-09
- updated
- 2012-04-02
- abuse name
- Northwestern University Network Security
- abuse email
- security@northwestern.edu
- abuse phone
- +1-847-467-2222
- abuse kind
- role
- abuse city
- Evanston
- abuse country
- US
- admin name
- NUIT TNS
- admin email
- data-network@northwestern.edu
- admin phone
- +1-847-467-2222
- admin kind
- person
- admin city
- Evanston
- admin country
- US
- tech
- NUNA-ARIN
- tech name
- Northwestern University Network Administration
- tech email
- data-network@northwestern.edu
- tech phone
- +1-847-467-2222
- tech kind
- role
- tech city
- Evanston
- tech country
- US
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- VPN IP350.02%
- anyip, brightdata, geonode0.03%
- None here
- None here
- 0.00%
- None here
- Hosting IP11,5207.71%
- None here
- None here
- None here
- SSH IP3510.23%
- 0.01%
- 0.01%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 8.28.178.0/23 | United States | not found | 19 | 2026-10-02 |
| 8.30.248.0/22 | United States | not found | 19 | 2026-10-02 |
| 38.124.97.0/24 | United States | not found | 20 | 2026-10-02 |
| 129.105.0.0/16 | United States | not found | 20 | 2026-10-02 |
| 165.124.0.0/17 | United States | not found | 20 | 2026-10-02 |
| 165.124.128.0/19 | United States | not found | 20 | 2026-10-02 |
| 165.124.160.0/20 | United States | not found | 20 | 2026-10-02 |
| 165.124.176.0/21 | United States | not found | 20 | 2026-10-02 |
| 165.124.184.0/23 | United States | not found | 20 | 2026-10-02 |
| 165.124.186.0/24 | United States | not found | 20 | 2026-10-02 |
| 165.124.192.0/19 | United States | not found | 20 | 2026-10-02 |
| 165.124.224.0/21 | United States | not found | 20 | 2026-10-02 |
| 165.124.232.0/22 | United States | not found | 20 | 2026-10-02 |
| 165.124.240.0/20 | United States | not found | 20 | 2026-10-02 |
| 192.5.143.0/24 | United States | not found | 20 | 2026-10-02 |
| 192.26.85.0/24 | United States | not found | 20 | 2026-10-02 |
| 192.26.86.0/23 | United States | not found | 20 | 2026-10-02 |
| 192.31.253.0/24 | United States | not found | 20 | 2026-10-02 |
| 199.74.64.0/18 | United States | not found | 20 | 2026-10-02 |
| 199.249.165.0/24 | United States | not found | 20 | 2026-10-02 |
| 199.249.166.0/23 | United States | not found | 20 | 2026-10-02 |
| 199.249.168.0/23 | United States | not found | 20 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2401:eee0:140::/42 | Bangladesh | invalid:origin | 3 | 2026-10-02 |
| 2401:eee0:180::/42 | Bangladesh | invalid:origin | 3 | 2026-10-02 |
| 2620:10d:2000::/41 | United States | not found | 20 | 2026-10-02 |
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