Sigma-Aldrich Corporation
Sigma Aldrich Corporation
GLEIF verified
LEI
5493003MO7QE8VJUEP94
Registered name
Sigma-Aldrich Corporation
Jurisdiction
US-DE
Ultimate parent
E. Merck KG
529900YCCXD7AIHXU523
Cluster stats
Netblocks14
All fragments 15 blocks across 2 clusters
Cluster ID191609492
RegistryBGP
Owner jurisdictionUS-DE
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 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

2 weekly snapshots · JSON
14 0 netblocks since 2026-07-05
2026-07-05 peak 14 2026-07-06

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
85.238.130.0/23 Sigma Aldrich Corporation BGP ANNOUNCED ● high
85.238.130.0/24 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
141.247.0.0/16 Sigma Aldrich Corporation ARIN ● 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
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)

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 PLC

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