AS21942 — -Reserved AS-

AS21942 announces 1 IPv4 prefixes covering 256 addresses and 0 IPv6 prefixes.

About this network

The AS handle is -Reserved AS- and the holder is SCG Czech Design Center, s.r.o.

What it's used for

• The space carries corporate infrastructure, evidenced by the netname ON-SEMICONDUCTOR-NET1-PI-ROZ-CZ and the registrant Network-NOC; SCG Czech Design Center, s.r.o.
• The AS announces 256 IPv4 addresses across 1 prefix with 2 observed neighbours, indicating a small internal corporate estate rather than a transit or access network.

Notable

• The registrant Network-NOC; SCG Czech Design Center, s.r.o. aligns with the corporate identity implied by the netname.
• The address inventory consists of a single /24 block (91.199.164.0/24), representing a finely subdivided internal network segment.

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

Announced prefixes

• 91.199.164.0/24

Upstream networks

• AS6855 Slovak Telekom, a.s.
• AS5610 O2 Czech Republic, a.s.

Adjacent networks

• AS6855 Slovak Telekom, a.s.
• AS5610 O2 Czech Republic, a.s.

Routing security

• RPKI: 0 valid, 0 invalid and 1 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 1 route objects.
• Listed in as-sets: AS-CTIOL, AS-GTSCZ-CUST, AS12025:AS-CUSTOMERS.