AS25978
Rush University Medical Center
AS25978 is Rush University Medical Center (rush.edu). It announces 65,536 IPv4 addresses in 5 prefixes, and 0 IPv6 prefixes.
United States· ARIN· allocated 2025-02-19· education
65,536
IPv4 addresses announced
5
IPv4 prefixes
0
IPv6 prefixes
0.00%
of its routes RPKI-valid
65,536
of its IPv4 geolocated
1
country
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 States65,536 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- RUSH-EXTERNAL
- name
- Rush University Medical Center
- org
- RPLMC
- org name
- Rush University Medical Center
- org address
- 1653 W. Congress Parkway, Chicago, IL, 60612
- org city
- Chicago
- org country
- US
- country
- US
- source
- arin
- created
- 2025-02-19
- updated
- 2025-02-19
- abuse name
- KARL ODER
- abuse email
- koder@rush.edu
- abuse phone
- +1-312-942-8940
- abuse kind
- person
- abuse city
- CHICAGO
- abuse country
- US
- admin name
- Manager of Network Services
- admin email
- netinfra@rush.edu
- admin phone
- +1-312-942-4242
- admin kind
- role
- admin city
- Chicago
- admin country
- US
- tech name
- Jay Clukey
- tech email
- jclukey@rush.edu
- tech phone
- +1-312-942-4806
- tech kind
- person
- tech city
- Chicago
- 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.
- 0.01%
- cliproxy0.00%
- None here
- None here
- None here
- None here
- Hosting IP2560.39%
- None here
- None here
- None here
- 0.00%
- 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 |
|---|---|---|---|---|
| 144.74.0.0/17 | United States | not found | 17 | 2026-10-02 |
| 144.74.16.0/21 | United States | not found | 17 | 2026-10-02 |
| 144.74.16.0/23 | United States | not found | 17 | 2026-10-02 |
| 144.74.20.0/23 | United States | not found | 17 | 2026-10-02 |
| 144.74.128.0/17 | United States | not found | 17 | 2026-10-02 |
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