University of Maryland
AS27 is University of Maryland (umd.edu). It announces 133,632 IPv4 addresses in 5 prefixes, and 6 IPv6 prefixes.
United States· ARIN· allocated 1984-08-28· 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
- UMDNET
- name
- University of Maryland
- org
- UNIVER-262-Z
- org name
- University of Maryland
- org address
- Office of Information Technology, Patuxent Building, College Park, MD, 20742
- org city
- College Park
- org country
- US
- country
- US
- source
- arin
- created
- 1984-08-28
- updated
- 2014-02-18
- abuse name
- UMD Abuse Role Account
- abuse email
- abuse@umd.edu
- abuse phone
- +1-301-405-8787
- abuse kind
- role
- abuse city
- College Park
- abuse country
- US
- admin name
- UMD DNS Admin Role Account
- admin email
- dnsadmin@umd.edu
- admin phone
- +1-301-405-9955
- admin kind
- role
- admin city
- College Park
- admin country
- US
- tech
- UM-ORG-ARIN
- tech name
- UMD DNS Admin Role Account
- tech email
- dnsadmin@umd.edu
- tech phone
- +1-301-405-9955
- tech kind
- role
- tech city
- College Park
- 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 IP260.02%
- geonode, anyip, thordata0.10%
- None here
- None here
- None here
- None here
- Hosting IP5,3764.02%
- None here
- None here
- None here
- SSH IP3160.24%
- SMTP IP140.01%
- 0.03%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 128.8.0.0/16 | United States | not found | 19 | 2026-10-02 |
| 129.2.0.0/16 | United States | not found | 19 | 2026-10-02 |
| 192.54.94.0/23 | United States | not found | 19 | 2026-10-02 |
| 192.54.96.0/21 | United States | not found | 19 | 2026-10-02 |
| 192.54.100.0/22 | United States | not found | 19 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 2605:880::/48 | United States | not found | 20 | 2026-10-02 |
| 2605:880:1::/48 | United States | not found | 20 | 2026-10-02 |
| 2605:880:10::/48 | United States | not found | 20 | 2026-10-02 |
| 2605:880:20::/48 | United States | not found | 20 | 2026-10-02 |
| 2605:880:22::/48 | United States | not found | 20 | 2026-10-02 |
| 2605:880:30::/48 | United States | not found | 20 | 2026-10-02 |
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