// ASN
AS203909
MAINFRAME-NET - Christian Svensson, SE
Detailed information about the Autonomous System. Need another one? Look up a different ASN.
- ASN
- AS203909
- Organization
- Mainframe Networks
- Description
- MAINFRAME-NET - Christian Svensson, SE
- Registry (RIR)
- RIPE
- Created
- 2024-08-08
- Updated
- 2025-11-11
- IPv4 Prefixes
- 1
- IPv6 Prefixes
- 1
IPv4 Prefixes
1 total193.228.143.0/24
IPv6 Prefixes
1 total2001:678:d88::/48
What is AS203909?
AS203909 is an Autonomous System Number (ASN) assigned to Mainframe Networks. An ASN identifies a network or group of IP prefixes operated under a common routing policy in the BGP protocol.
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