Mount Sinai School of Medicine

Data as of 2026-07-26
BGP inherited
Cluster stats
Netblocks15 · 65,792 IPv4 addresses
All fragments 19 blocks across 5 clusters
Cluster ID213609962
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 10 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

6 weekly snapshots · JSON
15 +1 netblocks since 2026-07-05
2026-07-05 peak 15 2026-07-26

IP Ranges (15)

⬇ export CSV
CIDR Org name Registry Status Confidence
146.203.0.0/18 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.64.0/18 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.128.0/21 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.136.0/21 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.138.0/24 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.139.0/24 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.144.0/22 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.148.0/22 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.148.0/24 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.149.0/24 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.150.0/24 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.151.0/24 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.192.0/18 Mount Sinai School of Medicine BGP ANNOUNCED ● high
159.123.127.0/24 Mount Sinai School of Medicine BGP ANNOUNCED ● high
146.203.0.0/16 Mount Sinai School of Medicine ARIN DIRECT ALLOCATION ● low

Domains hosted in this network

what's this?
mountsinai.org mssm.edu

Network trust

what's this?
RPKI hygiene: C how networks compare →
60.0% of checked blocks have valid RPKI ROA coverage (9 of 15)
No discrepancies found among checked blocks.

NIC Handles

AP412-ARIN AP412-ARIN AP412-ARIN AS11452 CRUZO-ARIN GUNTH50-ARIN LAWRE33-ARIN MSSM NETWO2964-ARIN NETWO2964-ARIN