AS203053 — ClausWEB CLAUS WEB srl

AS203053 announces 28 IPv4 prefixes covering 8,960 addresses and 0 IPv6 prefixes.

About this network

CLAUSWEB is operated by Claus Web SRL.

What it's used for

• The address space carries web hosting and cloud infrastructure, evidenced by reverse DNS entries such as cw185-adf-he0.romania-webhosting.com and cw37-aef-ah0128.romania-webhosting.com.
• The AS announces 8960 IPv4 addresses across 28 prefixes with only 2 observed neighbours, a ratio that indicates a hosting provider rather than a transit carrier.
• Traffic from this AS consists of web servers, API endpoints, and cloud instances hosted for customers, consistent with ClausWeb's business as a Romanian hosting and cloud infrastructure provider.

Notable

• All registrants in the RDAP sample are CLAUS WEB srl, matching the AS holder and confirming consistent ownership of the announced space.
• The address inventory is fragmented into many /24 and /23 blocks, with the largest being 185.146.84.0/22, reflecting a long-standing accumulation of address space since the company's founding in 2005.

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

Announced prefixes

• 31.14.56.0/24
• 37.156.4.0/24
• 37.156.180.0/23
• 85.204.69.0/24
• 86.105.228.0/24
• 86.107.43.0/24
• 86.107.78.0/23
• 89.36.154.0/24
• 89.37.29.0/24
• 89.39.209.0/24
• 89.40.32.0/23
• 89.42.13.0/24
• 89.44.105.0/24
• 91.197.247.0/24
• 93.113.54.0/23
• 93.114.248.0/24
• 93.119.122.0/24
• 94.176.213.0/24
• 176.126.172.0/24
• 176.223.167.0/24
• 185.146.84.0/22
• 188.212.127.0/24
• 188.212.252.0/24
• 188.212.255.0/24
• 188.214.214.0/24
• 193.104.121.0/24
• 193.105.239.0/24
• 194.107.112.0/24

Upstream networks

• AS5606 GTS Telecom SRL
• AS9009 M247 Europe SRL

Adjacent networks

• AS5606 GTS Telecom SRL
• AS9009 M247 Europe SRL

Routing security

• RPKI: 35 valid, 0 invalid and 0 not-found announcements; 35 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 37 route objects.
• Listed in as-sets: AS-CLUESONIT, AS-GTSRO, AS-KQROTERRA, AS-RETN-ACTUAL-V4.