Univeristy of Chicago Hospitals & Health System
AS29885 is Univeristy of Chicago Hospitals & Health System (uchicagomedicine.org). It announces 65,792 IPv4 addresses in 4 prefixes, and 0 IPv6 prefixes.
United States· ARIN· allocated 2003-05-29· business
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 States65,792 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- UCHHS-AS
- name
- Univeristy of Chicago Hospitals & Health System
- org
- UCHHS
- org name
- Univeristy of Chicago Hospitals & Health System
- org address
- 7955 South Cass Avenue, Darien, IL, 60651
- org city
- Darien
- org country
- US
- country
- US
- source
- arin
- created
- 2003-05-29
- updated
- 2012-03-02
- abuse name
- Martin Gramlick
- abuse email
- martin.gramlick@uchicagomedicine.org
- abuse phone
- +1-773-834-0008
- abuse kind
- person
- abuse city
- Darien
- abuse country
- US
- admin name
- Martin Gramlick
- admin email
- martin.gramlick@uchicagomedicine.org
- admin phone
- +1-773-834-0008
- admin kind
- person
- admin city
- Darien
- admin country
- US
- tech name
- Martin Gramlick
- tech email
- martin.gramlick@uchicagomedicine.org
- tech phone
- +1-773-834-0008
- tech kind
- person
- tech city
- Darien
- 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%
- cliproxy, geonix0.00%
- None here
- None here
- None here
- None here
- Hosting IP2560.39%
- None here
- None here
- None here
- None here
- None here
- None here
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 64.107.48.0/24 | United States | valid | 17 | 2026-10-02 |
| 165.68.0.0/16 | United States | not found | 19 | 2026-10-02 |
| 165.68.0.0/17 | United States | not found | 17 | 2026-10-02 |
| 165.68.128.0/17 | United States | not found | 17 | 2026-10-02 |
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