THOMAS JEFFERSON UNIVERSITY

Thomas Jefferson University
Data as of 2026-10-25
GLEIF verified
LEI
DB1TWPCZX5RK7VR27A68
Registered name
THOMAS JEFFERSON UNIVERSITY
Jurisdiction
US-PA
Ultimate parent
No parent on file in GLEIF
This organisation
Netblocks9 · 67,328 IPv4 addresses
IPv6 1 prefix (largest 2605:2c0::/32)
Also registered under this name 34 netblocks across 2 separate records
Record ID256028770
RegistryBGP
Owner jurisdictionUS-PA
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 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 (9)

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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
209.71.37.0 – 209.71.41.255 Thomas Jefferson University ARIN DIRECT ALLOCATION ● medium
2605:2c0::/32 Thomas Jefferson University ARIN DIRECT ALLOCATION ● medium

IPv6 ranges (1)

CIDR
2605:2c0::/32

Footprint over time

17 weekly snapshots · JSON
10 +4 netblocks since 2026-07-05
2026-07-05 peak 10 2026-10-25

Network trust

what's this?
RPKI hygiene: D how networks compare →
20.0% of checked blocks have valid RPKI ROA coverage (2 of 10)
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