Chemical Abstracts Service
Data as of 2026-07-26
BGP inherited
Cluster stats
| Netblocks | 9 · 65,536 IPv4 addresses |
| Cluster ID | 214467936 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 7 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
6 weekly snapshots · JSON
10
-4 netblocks since 2026-07-05
2026-07-05
peak 14
2026-07-26
IP Ranges (9)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 134.243.0.0/16 | Chemical Abstracts Service | ARIN | DIRECT ALLOCATION | ● high |
| 134.243.5.0/24 | Chemical Abstracts Service | BGP | ANNOUNCED | ● high |
| 134.243.50.0/24 | Chemical Abstracts Service | BGP | ANNOUNCED | ● high |
| 134.243.86.0/24 | Chemical Abstracts Service | BGP | ANNOUNCED | ● high |
| 134.243.90.0/24 | Chemical Abstracts Service | BGP | ANNOUNCED | ● high |
| 134.243.252.0/24 | Chemical Abstracts Service | BGP | ANNOUNCED | ● high |
| 134.243.253.0/24 | Chemical Abstracts Service | BGP | ANNOUNCED | ● high |
| 134.243.254.0/24 | Chemical Abstracts Service | BGP | ANNOUNCED | ● high |
| 134.243.255.0/24 | Chemical Abstracts Service | BGP | ANNOUNCED | ● high |
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(10 of 10)
No discrepancies found among checked blocks.
NIC Handles
AS33194
BAUMA82-ARIN
BAUMA82-ARIN
CAS-Z
NSG4-ARIN
NSG4-ARIN
SHIHM2-ARIN