Carnegie Mellon University
AS9 is Carnegie Mellon University (cmu.edu). It announces 133,632 IPv4 addresses in 8 prefixes, and 1 IPv6 prefixes.
United States· ARIN· allocated 1984-04-17· 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 States133,632 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- CMU-ROUTER
- name
- Carnegie Mellon University
- org
- CARNEG-Z
- org name
- Carnegie Mellon University
- org address
- Cyert Hall 215, 5000 Forbes Avenue, Pittsburgh, PA, 15213
- org city
- Pittsburgh
- org country
- US
- country
- US
- source
- arin
- created
- 1984-04-17
- updated
- 2012-04-02
- abuse name
- Carnegie Mellon Abuse
- abuse email
- abuse@andrew.cmu.edu
- abuse phone
- +1-412-268-4357
- abuse kind
- role
- abuse city
- Pittsburgh
- abuse country
- US
- admin name
- Carnegie Mellon Hostmaster
- admin email
- host-master@andrew.cmu.edu
- admin phone
- +1-412-268-4357
- admin kind
- role
- admin city
- Pittsburgh
- admin country
- US
- tech
- CH4-ORG-ARIN
- tech name
- Carnegie Mellon Hostmaster
- tech email
- host-master@andrew.cmu.edu
- tech phone
- +1-412-268-4357
- tech kind
- role
- tech city
- Pittsburgh
- 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 IP5930.44%
- geonode, proxyseller, anyip0.01%
- None here
- None here
- 0.00%
- None here
- Hosting IP19,45614.56%
- None here
- None here
- None here
- SSH IP1,7471.31%
- SMTP IP230.02%
- 0.08%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 128.2.0.0/16 | United States | not found | 19 | 2026-10-02 |
| 128.237.0.0/16 | United States | not found | 19 | 2026-10-02 |
| 192.5.146.0/24 | United States | not found | 19 | 2026-10-02 |
| 192.12.32.0/24 | United States | not found | 19 | 2026-10-02 |
| 192.58.107.0/24 | United States | not found | 19 | 2026-10-02 |
| 192.80.210.0/24 | United States | not found | 19 | 2026-10-02 |
| 204.194.28.0/22 | United States | not found | 19 | 2026-10-02 |
| 209.129.244.0/23 | United States | not found | 18 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2607:fb28::/32 | United States | not found | 12 | 2026-10-02 |
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