AS7 — DSTL - The Defence Science and Technology Laboratory

AS7 announces 11 IPv4 prefixes covering 68,864 addresses and 1 IPv6 prefixes.

About this network

An early allocation (DSTL) belonging to the Defence Science and Technology Laboratory, an executive agency of the UK Ministry of Defence.

What it's used for

• Networking for the UK government's defence science and research organisation.

Notable

• A UK government / defence network, not a commercial ISP. A single-digit AS number reflects an allocation from the internet's earliest years.

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

Announced prefixes

• 146.80.0.0/16
• 192.5.28.0/23
• 192.5.30.0/24
• 192.35.94.0/24
• 192.67.43.0/24
• 192.107.178.0/24
• 192.149.120.0/24
• 194.32.69.0/24
• 194.32.218.0/23
• 194.34.138.0/24
• 194.61.92.0/23
• 2a0b:3b40::/29

Upstream networks

• AS786 Jisc Services Limited

Downstream networks

• AS30844 Liquid Telecommunications Ltd

Adjacent networks

• AS786 Jisc Services Limited
• AS30844 Liquid Telecommunications Ltd
• AS327708 Airtel Rwanda Ltd
• AS327707 Airtel Rwanda Ltd

Routing security

• RPKI: 7 valid, 0 invalid and 12 not-found announcements; 7 ROAs.
• ASPA: none published.
• IRR: 68% of announcements registered; 18 route objects.
• Listed in as-sets: AS-309561, AS-JANETEURO, AS-JANETPLUS, AS-JANETUS.