Sigma-Aldrich Corporation
Sigma Aldrich Corporation
GLEIF verified
Complete entity footprint
3 linked clusters ·
21 netblocks ·
200,249 IPv4 addresses
This organisation's clusters combined by evidence —
shared GLEIF corporate family
— not name similarity, so genuinely different organisations that share a name are excluded.
LEI
5493003MO7QE8VJUEP94
Registered name
Sigma-Aldrich Corporation
Jurisdiction
Ultimate parent
E. Merck KG
529900YCCXD7AIHXU523
Cluster stats
| Netblocks | 14 · 69,151 IPv4 addresses |
| Registered in | Germany (6) · United States (4) · United Kingdom (3) |
| All fragments | 15 blocks across 2 clusters |
| Cluster ID | 209410005 |
| Registry | BGP |
| Owner jurisdiction | US-DE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 5493003MO7QE8VJUEP94 |
| Shared handles | clustered on 16 shared RIR contact/maintainer handles |
| Registry names | 5 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
5 weekly snapshots · JSON
14
0 netblocks since 2026-07-05
2026-07-05
peak 14
2026-07-19
IP Ranges (14)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 63.77.23.0/24 | Sigma Aldrich Corporation | BGP | ANNOUNCED | ● high |
| 63.99.16.0/24 | Sigma Aldrich Corporation | BGP | ANNOUNCED | ● high |
| 85.238.128.0/23 | Sigma Aldrich Corporation | BGP | ANNOUNCED | ● high |
| 85.238.129.0/24 | Sigma Aldrich Corporation | BGP | ANNOUNCED | ● high |
| 85.238.130.0/24 | Sigma Aldrich Corporation | BGP | ANNOUNCED | ● high |
| 85.238.130.0/23 | Sigma Aldrich Corporation | BGP | ANNOUNCED | ● high |
| 85.238.131.0/24 | Sigma Aldrich Corporation | BGP | ANNOUNCED | ● high |
| 85.238.144.0/22 | Sigma Aldrich Corporation | BGP | ANNOUNCED | ● high |
| 205.219.230.0/24 | Sigma Aldrich Corporation | BGP | ANNOUNCED | ● high |
| 62.254.38.224/30 | SIGMA-ALDRICH-COMPANY-LIMITED | RIPE | ASSIGNED PA | ● low |
| 141.247.0.0/16 | Sigma Aldrich Corporation | ARIN | DIRECT ALLOCATION | ● low |
| 194.168.36.40/29 | SIGMA-ALDRICH | RIPE | ASSIGNED PA | ● low |
| 213.106.144.32/27 | SIGMA-ALDRICH-CO-LTD | RIPE | ASSIGNED PA | ● low |
| 2a00:2381:e28d::/48 | SIGMA-ALDRICH | RIPE | AGGREGATED-BY-LIR | ● low |
Corporate group (3 confirmed entities)
- Millipore Corp. 5 blocks
- Merck-Serono-Middle-East-FZ-LLC 2 blocks
Network trust
what's this?
RPKI hygiene: D
how networks compare →
28.6%
of checked blocks have valid RPKI ROA coverage
(4 of 14)
Possible discrepancies (1)
These blocks are registered to Sigma Aldrich Corporation but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2a00:2381:e28d::/48 /48 | authorized for AS2856 — British Telecommunications Limited |
NIC Handles
AS14109
AS5089-MNT
BTNET-MNT
COOKM68-ARIN
COOKM68-ARIN
DUMY-RIPE
DUMY-RIPE
KWH7-ARIN
KWH7-ARIN
MERCK-MNT
RAVIE-ARIN
RAVIE-ARIN
+4 more