A.R.T. ADVISORS, LLC
A.R.T. Advisors, LLC
Data as of 2026-08-09
GLEIF verified
LEI
549300579ZENHJYPC730
Registered name
A.R.T. ADVISORS, LLC
Jurisdiction
Ultimate parent
No parent on file in GLEIF
Cluster stats
| Netblocks | 9 · 2,304 IPv4 addresses |
| Cluster ID | 218461254 |
| Registry | BGP |
| Owner jurisdiction | US-DE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 549300579ZENHJYPC730 |
| Shared handles | clustered on 1 shared RIR contact/maintainer handle |
| Registry names | 1 distinct registrant name across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
7 weekly snapshots · JSON
9
-14 netblocks since 2026-07-05
2026-07-05
peak 23
2026-08-09
IP Ranges (9)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 149.85.1.0/24 | A.R.T. Advisors, LLC | BGP | ANNOUNCED | ● high |
| 149.85.2.0/24 | A.R.T. Advisors, LLC | BGP | ANNOUNCED | ● high |
| 149.85.5.0/24 | A.R.T. Advisors, LLC | BGP | ANNOUNCED | ● high |
| 149.85.6.0/24 | A.R.T. Advisors, LLC | BGP | ANNOUNCED | ● high |
| 149.85.7.0/24 | A.R.T. Advisors, LLC | BGP | ANNOUNCED | ● high |
| 149.85.8.0/24 | A.R.T. Advisors, LLC | BGP | ANNOUNCED | ● high |
| 149.85.11.0/24 | A.R.T. Advisors, LLC | BGP | ANNOUNCED | ● high |
| 149.85.12.0/24 | A.R.T. Advisors, LLC | BGP | ANNOUNCED | ● high |
| 149.85.101.0/24 | A.R.T. Advisors, LLC | BGP | ANNOUNCED | ● high |
NIC Handles
AS19580