AS208434 — JAHN Martin Jahn

AS208434 announces 0 IPv4 prefixes covering 0 addresses and 3 IPv6 prefixes.

About this network

The AS handle is JAHN and the holder is Martin Jahn.

What it's used for

• The address space is exclusively IPv6, carrying three prefixes: 2a06:e881:6900::/46, 2a06:e881:690c::/48, and 2a06:e881:690f::/48.
• With 0 IPv4 addresses and 3 IPv6 prefixes against 44 observed neighbours, the high neighbour-to-prefix ratio indicates a transit or peering-heavy role rather than a large access network.
• The operator is identified in secondary sources as a research group leader at Helmholtz-Zentrum für Infektionsforschung (HZI) Braunschweig, suggesting the traffic consists of research and academic endpoints.

Notable

• The registry holder is listed as JAHN Martin Jahn, which aligns with the AS handle JAHN.
• The address inventory is small and finely subdivided into three distinct IPv6 blocks, consistent with an internal research or academic estate rather than a commercial ISP.

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

Announced prefixes

• 2a06:e881:6900::/46
• 2a06:e881:690c::/48
• 2a06:e881:690f::/48

Upstream networks

• AS6939 Hurricane Electric LLC
• AS47526 handily networks GmbH
• AS34927 iFog GmbH
• AS205794 JINZE YANG
• AS37989 DCS1 Pte. Ltd.
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS57821 Nonattached Network e.V.
• AS48185 team.blue NV
• AS29632 Netassist International EOOD
• AS58057 Securebit AG
• AS204092 Association GRIFON

Adjacent networks

• AS6939 Hurricane Electric LLC
• AS47526 handily networks GmbH
• AS34927 iFog GmbH
• AS37989 DCS1 Pte. Ltd.
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS204092 Association GRIFON
• AS57821 Nonattached Network e.V.
• AS48185 team.blue NV
• AS29632 Netassist International EOOD
• AS205794 JINZE YANG
• AS58057 Securebit AG

Routing security

• RPKI: 5 valid, 0 invalid and 1 not-found announcements; 5 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 7 route objects.
• Listed in as-sets: AS-EVIX, AS-HURRICANEV6, AS-IFOG, AS-IFOG, AS-MJVT, AS-NL-IX-RS, AS-RETN-ACTUAL-V6.

Internet exchanges

• Neutral Internet Exchange — Amsterdam, Netherlands
• KleyReX Internet Exchange — Frankfurt, Germany