AS8519 ESA-MOSNET ESA OPSNET-INTRANET

ESA-MOSNET is held by the European Space Agency. The single announced block,

195.74.160.0/19, is registered as ESA-OPSNET — the agency's operational

network — and is administered from Germany, where ESA's European Space Operations

Centre (ESOC) in Darmstadt runs spacecraft operations.

What it's used for

• Connectivity for ESA's operational and intranet estate: the ground-segment and mission-operations infrastructure, and the agency's internal systems across its establishments.
• About 8,000 addresses, announced as one contiguous /19 with a single observed BGP neighbour.

Notable

• The block publishes no public reverse DNS at all — nothing resolves across the range. That is normal for an operational agency network that is not meant to serve public-facing content; the address space exists to reach ESA systems, not to host them for the internet.
• ESA is an intergovernmental organisation of European member states, so this is government/public-sector address space even though it belongs to no single country. The registry country reflects where the network is administered, not ownership.

Interesting

• ESA's public web presence lives elsewhere; this AS is the quiet side of the agency, the network behind mission control rather than the one behind the press releases.