Purpose
This entry documents the currently assigned public IPv4 addresses (Public IPs) of our company sites.
The information serves as a reference for:
Firewall whitelisting
VPN and tunnel configurations
External service integrations
Security and network documentation
General Conditions
All listed IP addresses are configured as /32 (single host).
They are used on a per-site basis for inbound and/or outbound traffic.
Any changes to these IPs require prior coordination and must be reflected in all dependent systems.
Sites and IP Addresses
Hannover
62.48.68.20/32
62.48.68.21/32
Braunschweig
81.14.172.66/32
81.14.172.67/32
81.14.172.68/32
81.14.172.69/32
81.14.172.70/32
Oldenburg
80.228.86.25/32
80.228.86.26/32
80.228.86.27/32
80.228.86.28/32
80.228.86.29/32
80.228.86.30/32
Operational Guidelines
Whitelist requests to external partners must only include the IP addresses listed above.
Ensure the correct site-to-IP mapping is used in all configurations.
Any changes (e.g., ISP change, IP expansion) must:
be documented in this Knowledgebase
be communicated to all relevant stakeholders
For security-critical systems, a regular validation of IP assignments is recommended.
Responsibilities
Maintenance and updates: IT Infrastructure / Network Team
Approval authority: Head of IT