AS197545 — Era4-ASN Era4 Limited

AS197545 announces 1 IPv4 prefixes covering 16,384 addresses and 1 IPv6 prefixes.

About this network

The AS handle ERA4-ASN is held by Era4 Limited.

What it's used for

• The address space carries data centre infrastructure, as indicated by the netname UK-ERA4LIMITED-20081118 and the operator's business model of converting brownfield sites into data centres for AI capacity.
• The network announces 16384 IPv4 addresses within a single /18 prefix (95.36.128.0/18) and one IPv6 /32 prefix (2a0c:bbc0::/32), with only 2 observed neighbours, indicating a hosting or data centre role rather than transit.
• Traffic from this AS consists of web/API endpoints and AI compute workloads hosted in Era4's data centres, serving enterprise and cloud customers.

Notable

• The registrant Era4 Limited matches the AS holder, confirming consistent ownership of the address space.
• Era4 operates in the United Kingdom, focusing on resilient, high-performance, and lower-carbon AI infrastructure through the repurposing of industrial sites.
• The address inventory is consolidated into a single large IPv4 block and a single IPv6 prefix, typical of a data centre operator managing contiguous space for scalable deployment.

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

Announced prefixes

• 95.36.128.0/18
• 2a0c:bbc0::/32

Upstream networks

• AS49158 WIFINITY NETWORKS LIMITED
• AS174 Cogent Communications, LLC
• AS2856 British Telecommunications Limited

Adjacent networks

• AS49158 WIFINITY NETWORKS LIMITED
• AS174 Cogent Communications, LLC
• AS2856 British Telecommunications Limited

Routing security

• RPKI: 5 valid, 0 invalid and 0 not-found announcements; 2 ROAs.
• ASPA: 3 authorised providers.
• IRR: 80% of announcements registered; 8 route objects.
• Listed in as-sets: AS-BTGB-CUST, AS-NEXTCONNEX, AS-WIFINITY, AS53667:AS-CUSTOMERS.