AS199593 — SYNTHESIS-AS LLC Synthesis

AS199593 announces 1 IPv4 prefixes covering 512 addresses and 0 IPv6 prefixes.

About this network

The AS handle SYNTHESIS-AS is held by LLC Synthesis.

What it's used for

• The space carries corporate infrastructure, evidenced by the netname RU-SYNTHESIS-20121113 and the reverse DNS entry 126.extr.stz.net.ru.
• The AS announces 512 IPv4 addresses within a single prefix (185.9.204.0/23) and maintains 2 observed neighbours, a ratio consistent with a small internal corporate estate rather than a transit or access provider.
• Traffic from this AS consists of internal corporate endpoints and services for LLC Synthesis, a Russian entity based in Zelenograd.

Notable

• The RDAP registrant LLC Synthesis matches the registry holder and the AS name, confirming consistent ownership.
• The address inventory is compact, consisting of a single /23 block with no announced IPv6 prefixes.

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

Announced prefixes

• 185.9.204.0/23

Upstream networks

• AS12722 RECONN LLC
• AS8732 JSC Comcor

Adjacent networks

• AS12722 RECONN LLC
• AS8732 JSC Comcor

Routing security

• RPKI: 2 valid, 0 invalid and 0 not-found announcements; 3 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 3 route objects.
• Listed in as-sets: AS-COMCOR, AS-COMCOR-EU, AS-COMCOR-STK, AS-HURRICANE, AS-RECONN, AS-RETN-ACTUAL-V4.