AS5635 — GLAXOSMITHKLINE

AS5635 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

A corporate network of GSK (GlaxoSmithKline), the British multinational pharmaceutical and biotechnology company, registered to its US organisation in Philadelphia under the handle GLAXOSMITHKLINE.

What it's used for

• Enterprise connectivity for GSK's US operations: corporate sites, research and manufacturing facilities, and company-run internet-facing services.

Notable

• Enterprise address space, not a service provider. The AS announces a single 256-address block and exists so the company can route its own space.
• ARIN registered the AS in 1995, well inside the era when large industrial and pharmaceutical firms took address space and AS numbers directly.

Interesting

• The registrant behind the AS still carries the ARIN organisation handle SBC-92, which appears to date from SmithKline Beecham. That company merged with Glaxo Wellcome in 2000 to form GlaxoSmithKline, five years after the AS was registered, and the old handle was never replaced.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 198.28.69.0/24

Upstream networks

• AS10753 Level 3 Parent, LLC

Adjacent networks

• AS10753 Level 3 Parent, LLC