A.R.T. ADVISORS, LLC
A.R.T. Advisors, LLC
LEI
549300579ZENHJYPC730
Registered name
A.R.T. ADVISORS, LLC
Jurisdiction
Ultimate parent
No parent on file in GLEIF
Cluster stats
| Netblocks | 23 |
| Cluster ID | 191773236 |
| Registry | BGP |
| Owner jurisdiction | US-DE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Legal identity | LEI 549300579ZENHJYPC730 |
| Shared handles | clustered on 15 shared RIR contact/maintainer handles |
| Registry names | 11 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
IP Ranges (23)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 89.39.225.88/29 | Art-ER | RIPE | ASSIGNED PA | ● high |
| 89.45.95.56/29 | ART-ER | RIPE | ASSIGNED PA | ● high |
| 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 |
| 79.142.89.84/30 | ART-COM-LAN | RIPE | ASSIGNED PA | ● low |
| 79.142.90.160/30 | ART-COM-LAN | RIPE | ASSIGNED PA | ● low |
| 89.171.22.80/30 | ART-BUD | RIPE | ASSIGNED PA | ● low |
| 92.47.103.244/30 | ART-IT | RIPE | ASSIGNED PA | ● low |
| 146.0.146.56/29 | ART-LU | RIPE | ASSIGNED PA | ● low |
| 178.16.155.188/30 | ART-T-LAN | RIPE | ASSIGNED PA | ● low |
| 195.116.91.64/29 | ART-PEX | RIPE | ASSIGNED PA | ● low |
| 195.146.53.128 – 195.146.53.225 | ART-OR-IR | RIPE | ASSIGNED PA | ● low |
| 212.24.144.12/30 | ART-D | RIPE | ASSIGNED PA | ● low |
| 213.151.81.160/29 | ART-D | RIPE | ASSIGNED PA | ● low |
| 217.79.0.0/23 | ART-COM-LAN | RIPE | ASSIGNED PA | ● low |
| 2001:7e8:8600:5d00::/56 | ART-LU | RIPE | ASSIGNED | ● low |
Network trust
what's this?
RPKI hygiene: C
how networks compare →
60.9%
of checked blocks have valid RPKI ROA coverage
(14 of 23)
Possible discrepancies (2)
These blocks are registered to A.R.T. Advisors, LLC but cryptographically authorized for a different, unrelated network (2 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2001:7e8:8600:5d00::/56 /56 | authorized for AS6661 — POST Luxembourg |
| 217.79.0.0/23 /23 | authorized for AS8492 — "OBIT" Ltd. |
NIC Handles
AA45422-RIPE
AS12880-MNT
AS19580
AS6661-MNT
DIALTELECOM-MNT
DUMY-RIPE
DUMY-RIPE
KNIC-MNT
LEPIDA-MNT
NETIA-MNT
OBIT-MNT
ORG-AA3334-RIPE
+3 more