University of Massachusetts Medical School
AS5724 is University of Massachusetts Medical School (umassmed.edu). It announces 65,536 IPv4 addresses in 4 prefixes, and 0 IPv6 prefixes.
United States· ARIN· allocated 1995-09-06· 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 States65,536 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- UMASSMED
- name
- University of Massachusetts Medical School
- org
- UMMC-1-Z
- org name
- University of Massachusetts Medical School
- org address
- 55 Lake Avenue North, Worcester, MA, 01655
- org city
- Worcester
- org country
- US
- country
- US
- source
- arin
- created
- 1995-09-06
- updated
- 2023-07-01
- remarks
- http://www.umassmed.edu
- abuse name
- Hosted Services
- abuse email
- HostedServices@umassmed.edu
- abuse phone
- +1-508-612-1138
- abuse kind
- role
- abuse city
- Shrewsbury
- abuse country
- US
- admin name
- Hosted Services
- admin email
- HostedServices@umassmed.edu
- admin phone
- +1-508-612-1138
- admin kind
- role
- admin city
- Shrewsbury
- admin country
- US
- tech
- HOSTE28-ARIN
- tech name
- Hosted Services
- tech email
- HostedServices@umassmed.edu
- tech phone
- +1-508-612-1138
- tech kind
- role
- tech city
- Shrewsbury
- 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.
- None here
- anyip0.00%
- None here
- None here
- None here
- None here
- Hosting IP2560.39%
- None here
- None here
- None here
- 0.01%
- None here
- 0.00%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 146.189.0.0/16 | United States | not found | 19 | 2026-10-02 |
| 146.189.25.0/24 | United States | not found | 19 | 2026-10-02 |
| 146.189.26.0/24 | United States | not found | 19 | 2026-10-02 |
| 146.189.128.0/21 | United States | not found | 19 | 2026-10-02 |
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