Mount Sinai School of Medicine
AS11452 is Mount Sinai School of Medicine (mountsinai.org). It announces 55,296 IPv4 addresses in 14 prefixes, and 0 IPv6 prefixes.
United States· ARIN· allocated 1998-08-27· 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 States55,296 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- MOUNT-SINAI
- name
- Mount Sinai School of Medicine
- org
- MSSM
- org name
- Mount Sinai School of Medicine
- org address
- One Gustave L. Levy Place, Mailstop 1102, New York, NY, 10029-6574
- org city
- New York
- org country
- US
- country
- US
- source
- arin
- created
- 1998-08-27
- updated
- 2012-03-02
- abuse name
- Andrew Pizzimenti
- abuse email
- andrew.pizzimenti@mssm.edu
- abuse phone
- +1-212-241-4929
- abuse kind
- person
- abuse city
- New York
- abuse country
- US
- admin name
- Paul Lawrence
- admin email
- paul.lawrence@mssm.edu
- admin phone
- +1-212-241-7892
- admin kind
- person
- admin city
- New York
- admin country
- US
- tech
- AP412-ARIN
- tech name
- Andrew Pizzimenti
- tech email
- andrew.pizzimenti@mssm.edu
- tech phone
- +1-212-241-4929
- tech kind
- person
- tech city
- New York
- 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%
- geonode, proxyseller0.01%
- None here
- None here
- None here
- None here
- None here
- 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 |
|---|---|---|---|---|
| 146.203.0.0/18 | United States | not found | 19 | 2026-10-02 |
| 146.203.64.0/18 | United States | not found | 19 | 2026-10-02 |
| 146.203.128.0/21 | United States | not found | 19 | 2026-10-02 |
| 146.203.136.0/21 | United States | valid | 17 | 2026-10-02 |
| 146.203.138.0/24 | United States | valid | 17 | 2026-10-02 |
| 146.203.139.0/24 | United States | valid | 17 | 2026-10-02 |
| 146.203.144.0/22 | United States | valid | 17 | 2026-10-02 |
| 146.203.148.0/22 | United States | valid | 17 | 2026-10-02 |
| 146.203.148.0/24 | United States | valid | 17 | 2026-10-02 |
| 146.203.149.0/24 | United States | valid | 17 | 2026-10-02 |
| 146.203.150.0/24 | United States | valid | 17 | 2026-10-02 |
| 146.203.151.0/24 | United States | valid | 17 | 2026-10-02 |
| 146.203.192.0/18 | United States | not found | 19 | 2026-10-02 |
| 159.123.127.0/24 | United States | not found | 17 | 2026-10-02 |
Test the real build first.
An evaluation license puts a full current build in your hands — every row, every column, no sampling — so you can measure it against your own traffic before anyone talks about terms.