THOMAS JEFFERSON UNIVERSITY

Thomas Jefferson University
GLEIF verified
LEI
DB1TWPCZX5RK7VR27A68
Registered name
THOMAS JEFFERSON UNIVERSITY
Jurisdiction
US-PA
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks7 · 67,065 IPv4 addresses
All fragments 31 blocks across 2 clusters
Cluster ID211381413
RegistryBGP
Owner jurisdictionUS-PA
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI DB1TWPCZX5RK7VR27A68
Shared handles clustered on 12 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

4 weekly snapshots · JSON
7 +1 netblocks since 2026-07-05
2026-07-05 peak 7 2026-07-19

IP Ranges (7)

⬇ export CSV
CIDR Org name Registry Status Confidence
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
147.140.0.0/16 Thomas Jefferson University ARIN DIRECT ALLOCATION ● medium

Possibly related to this organisation

what's this?
Same name family
Separately-registered clusters whose names share “Thomas Jefferson University” — often per-country or per-system registrations of the same brand, occasionally a different organisation sharing the name. Not counted in this organisation's own footprint.

Network trust

what's this?
RPKI hygiene: F how networks compare →
14.3% of checked blocks have valid RPKI ROA coverage (1 of 7)
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-2-Z WOOTO8-ARIN