AS27595
Columbia College Chicago
AS27595 is Columbia College Chicago (colum.edu). It announces 2,048 IPv4 addresses in 2 prefixes, and 0 IPv6 prefixes.
United States· ARIN· allocated 2011-03-09· Education
2,048
IPv4 addresses announced
2
IPv4 prefixes
0
IPv6 prefixes
0.00%
of its routes RPKI-valid
2,048
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 States2,048 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- COLUM-600
- name
- Columbia College Chicago
- org
- COLUM-70
- org name
- Columbia College Chicago
- org address
- 600 S. Michigan Ave., Chicago, IL, 60605
- org city
- Chicago
- org country
- US
- country
- US
- source
- arin
- created
- 2011-03-09
- updated
- 2014-05-14
- abuse
- DGAMA-ARIN
- abuse name
- Derrick D'Gama
- abuse email
- ddgama@colum.edu
- abuse phone
- +1-312-369-7110
- abuse kind
- person
- abuse city
- Chicago
- abuse country
- US
- admin name
- Mike Duhr
- admin email
- mduhr@colum.edu
- admin phone
- +1-312-369-7879
- admin kind
- person
- admin city
- Chicago
- admin country
- US
- tech
- DGAMA-ARIN
- tech name
- Derrick D'Gama
- tech email
- ddgama@colum.edu
- tech phone
- +1-312-369-7110
- tech kind
- person
- tech city
- Chicago
- tech country
- US
- abuse unvalidated since
- 2016-05-08
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.
- None here
- Geonode, Mango Proxy0.20%
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- None here
- 0.24%
- 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 |
|---|---|---|---|---|
| 199.168.232.0/22 | United States | Not found | 17 | 2026-10-02 |
| 199.168.236.0/22 | United States | Not found | 17 | 2026-10-02 |
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