AS198605 — AVAST-AS-DC AVAST Software s.r.o.

AS198605 announces 15 IPv4 prefixes covering 5,632 addresses and 4 IPv6 prefixes.

About this network

AVAST-AS-DC is operated by Avast Software s.r.o., a Czech cybersecurity company.

What it's used for

• The address space carries corporate infrastructure, evidenced by reverse DNS records pointing to ptr.avast.com and netnames such as CZ-ASW-20120525 and AVAST-COM.
• The AS announces 5,632 IPv4 addresses across 15 prefixes and 6 IPv6 prefixes, while maintaining only 6 observed neighbours, indicating an internal corporate estate rather than a transit or access network.
• Traffic from this AS consists of web and API endpoints for Avast's security software products, including updates, telemetry, and user-facing services.

Notable

• Registrants align with the announcer, including AVAST Software s.r.o., Gen Digital Inc., and Privax LTD, reflecting the corporate structure and historical acquisitions.
• The inventory includes legacy blocks from NortonLifeLock (now Gen Digital) and Privax, consistent with Avast's acquisition history and integration of acquired IP space.
• The address inventory is finely subdivided into /23 and /24 blocks, supporting site-by-site segmentation within the corporate network.

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

Announced prefixes

• 5.45.58.0/23
• 5.62.36.0/23
• 5.62.54.0/24
• 5.62.60.0/23
• 37.156.187.0/24
• 69.94.64.0/24
• 69.94.70.0/23
• 69.94.74.0/23
• 77.234.40.0/24
• 91.213.143.0/24
• 166.98.8.0/24
• 166.98.10.0/23
• 185.189.92.0/24
• 185.189.94.0/23
• 195.74.76.0/24
• 2001:67c:284::/48
• 2a0b:e181::/40
• 2a0b:e181:108::/45
• 2a0b:e181:400::/38

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS29208 Quantcom, a.s.
• AS3257 GTT Communications Inc.
• AS5610 O2 Czech Republic, a.s.

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS29208 Quantcom, a.s.
• AS3257 GTT Communications Inc.
• AS5610 O2 Czech Republic, a.s.

Routing security

• RPKI: 26 valid, 0 invalid and 3 not-found announcements; 43 ROAs.
• ASPA: none published.
• IRR: 97% of announcements registered; 130 route objects.
• Listed in as-sets: AS-ASW, AS-CTIOL, AS-DIALTELECOM, AS-EC-SP, AS-GTTCUST, AS-GTTCUST6, AS-PACKET, AS-PNAPACS, AS-PNAPAMS, AS-PNAPAMS004, AS-PNAPFRA002, AS-PNAPLON, AS-PNAPLON, AS-PNAPMIA, AS-PNAPSJE, AS-SOFTLAYER, AS-XO-B.