MASS GENERAL BRIGHAM INCORPORATED
Mass General Brigham Incorporated
Data as of 2026-07-26
GLEIF verified
LEI
5493007Z86EDN0QFYU66
Registered name
MASS GENERAL BRIGHAM INCORPORATED
Jurisdiction
Ultimate parent
No parent on file in GLEIF
Cluster stats
| Netblocks | 5 · 197,120 IPv4 addresses |
| Cluster ID | 213661622 |
| Registry | BGP |
| Owner jurisdiction | US-MA |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 5493007Z86EDN0QFYU66 |
| Shared handles | clustered on 7 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (5)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 50.216.106.0/24 | Mass General Brigham Incorporated | BGP | ANNOUNCED | ● high |
| 132.183.0.0/16 | Mass General Brigham Incorporated | BGP | ANNOUNCED | ● high |
| 155.52.0.0/16 | Mass General Brigham Incorporated | BGP | ANNOUNCED | ● high |
| 160.72.231.0/24 | Mass General Brigham Incorporated | BGP | ANNOUNCED | ● high |
| 170.223.0.0/16 | Mass General Brigham Incorporated | BGP | ANNOUNCED | ● high |
Domains hosted in this network
what's this?Network trust
what's this?
RPKI hygiene: F
how networks compare →
16.7%
of checked blocks have valid RPKI ROA coverage
(1 of 6)
Possible discrepancies (1)
These blocks are registered to Mass General Brigham Incorporated but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 50.216.106.0/24 /24 | authorized for AS7015 — Comcast Cable Communications, LLC |
NIC Handles
AS40831
CHENN25-ARIN
MCCAN128-ARIN
MCCAN128-ARIN
PHS-8
SEVIG5-ARIN
ZP106-ARIN