All ASNs

Autonomous System details for AS203434

AS203434
Open Circle AG • open-circle.ch

AS203434 — Open Circle AG

AS Name
OPEN-CIRCLE
Country
Switzerland (CH)
Website
Number of IPv4
3,072
Number of IPv6
7.92 × 1029
ASN type
Business
Status
Allocated
Registry
RIPE
Allocated
January 19, 2016
Last updated
November 06, 2025

IP Ranges

8 IPv4 prefixes, 5 IPv6 prefixes
Prefix Company Number of IPs
45.66.232.0/23 Open Circle AG 512
45.66.234.0/23 Open Circle AG - RMA1 512
185.134.164.0/23 Open Circle AG 512
185.134.164.0/24 Open Circle AG 256
185.134.165.0/24 Open Circle AG - DC1 256
185.134.166.0/23 Open Circle AG - DC2 512
185.134.166.0/24 Open Circle AG - DC2 256
185.134.167.0/24 Open Circle AG - DC2 256
2a00:b0a0::/29 Open Circle AG 6.34 × 1029
2a00:b0a0:1::/48 Open Circle AG 1.21 × 1024
2a00:b0a0:2::/48 Open Circle AG 1.21 × 1024
2a00:b0a1::/32 Open Circle AG 7.92 × 1028
2a00:b0a2::/32 Open Circle AG 7.92 × 1028

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS203434

44 peers

AS203434 peers with these other Autonomous Systems.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS203434

3 upstreams

AS203434 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS203434 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS203434

0 downstreams

AS203434 has no downstreams recorded.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.

Our IP address tools

Explore all tools

What is my IP?

Discover your public IP address and detailed information about your connection.

CIDR to IP Range Converter (IPv4 and IPv6)

Convert CIDR notation to IP address ranges and vice versa. Useful for network configuration and security.

IP to Hostname/rDNS Lookup

Perform a reverse DNS (rDNS) lookup to get the hostname for an IP address.

IPv6 Expander/Collapser

Expand or collapse IPv6 addresses to their full or shortened forms for better readability and usage.