THOMAS JEFFERSON UNIVERSITY
Thomas Jefferson University
Data as of 2026-09-06
GLEIF verified
LEI
DB1TWPCZX5RK7VR27A68
Registered name
THOMAS JEFFERSON UNIVERSITY
Jurisdiction
Ultimate parent
No parent on file in GLEIF
This organisation
| Netblocks | 7 · 67,072 IPv4 addresses |
| Also registered under this name | 32 netblocks across 2 separate records |
| Record ID | 237193934 |
| Registry | BGP |
| Owner jurisdiction | US-PA |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI DB1TWPCZX5RK7VR27A68 |
| Shared handles | clustered on 13 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 (7)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 147.140.0.0/16 | Thomas Jefferson University | ARIN | DIRECT ALLOCATION | ● high |
| 198.54.81.0/24 | Thomas Jefferson University | BGP | ANNOUNCED | ● high |
| 208.103.188.0/24 | Thomas Jefferson University | BGP | ANNOUNCED | ● high |
| 209.71.37.0/24 | Thomas Jefferson University | BGP | ANNOUNCED | ● high |
| 209.71.38.0/24 | Thomas Jefferson University | BGP | ANNOUNCED | ● high |
| 209.71.39.0/24 | Thomas Jefferson University | BGP | ANNOUNCED | ● high |
| 209.71.40.0/24 | Thomas Jefferson University | BGP | ANNOUNCED | ● high |
Footprint over time
10 weekly snapshots · JSON
8
+2 netblocks since 2026-07-05
2026-07-05
peak 8
2026-09-06
Network trust
what's this?
RPKI hygiene: F
how networks compare →
12.5%
of checked blocks have valid RPKI ROA coverage
(1 of 8)
No discrepancies found among checked blocks.
NIC Handles
ABUSE8441-ARIN
AS30505
AS46946
DWW11-ARIN
ERNST4-ARIN
HOSTM2171-ARIN
NOC33462-ARIN
NOC33462-ARIN
RUIZT9-ARIN
RUIZT9-ARIN
TJU
TJU-2-Z
+1 more