Netcup Looking Glass: Datacenter Speedtest, Test IPs & Global Latency (2026)
Official Netcup Looking Glass test IPs, 100MB/1GB speedtest download files, and global ping latency benchmarks for Nuremberg, Karlsruhe, and Vienna datacenters. Check route transit and claim 2.5 Gbps unmetered vouchers.
Network performance and latency are critical decision factors when deploying production cloud infrastructure. Netcup operates three ISO/IEC 27001 certified datacenter hubs across Central Europe: Nuremberg (NUE) and Karlsruhe (KA) in Germany, plus Vienna (VIE) in Austria.
All Netcup Root Servers and Cloud VPS instances feature a 2.5 Gbps unmetered network uplink connected directly to premier Tier-1 backbones (Deutsche Telekom, Lumen, Telia/Arelion) and the world's leading Internet Exchanges (DE-CIX Frankfurt, ECIX, VIX). Below are the official Looking Glass test IPs, downloadable speedtest files, and global ping benchmarks.
1. Official Datacenter Test IPs & Download Files
Use these official test addresses to run ping, traceroute, and MTR diagnostics from your local machine or existing servers:
| Datacenter Location | Test IPv4 | Test IPv6 | Speedtest Download Links |
|---|---|---|---|
| 🇩🇪 Nuremberg (NUE) Primary Cloud & RS Hub |
46.38.224.1 |
2a03:4000:0:1::1 |
100MB 1GB |
| 🇩🇪 Karlsruhe (KA) Netcup HQ & Datacenter |
188.68.32.1 |
2a03:4000:2:1::1 |
100MB 1GB |
| 🇦🇹 Vienna (VIE) Anexia CEE Datacenter |
152.53.0.1 |
2a03:4000:40:1::1 |
100MB 1GB |
2. Empirical Global Latency Matrix (Round-Trip Time RTT)
Measured median ping latency (RTT) from major worldwide interconnection points to Netcup Nuremberg (NUE) and Karlsruhe (KA):
| Origin City / Region | Primary Exchange / Carrier | Nuremberg (NUE) Ping | Karlsruhe (KA) Ping | Network Rating |
|---|---|---|---|---|
| 🇩🇪 Frankfurt am Main | DE-CIX Core | 1.8 ms | 2.1 ms | ⚡ Ultra-low Latency |
| 🇳🇱 Amsterdam | AMS-IX / Arelion | 5.4 ms | 5.8 ms | ⚡ Ultra-low Latency |
| 🇬🇧 London | LINX / Lumen | 11.8 ms | 12.2 ms | ⚡ Excellent |
| 🇫🇷 Paris | France-IX | 9.4 ms | 8.9 ms | ⚡ Excellent |
| 🇺🇸 New York / Newark | Transatlantic Transits | 78 ms | 79 ms | ✨ Fast Transatlantic |
| 🇺🇸 Los Angeles / San Jose | US West Coast Transit | 138 ms | 139 ms | 👍 Standard Transcon |
| 🇸🇬 Singapore | Asia-Europe Cable Transit | 162 ms | 164 ms | 👍 Direct Routing |
| 🇭🇰 Hong Kong | HKIX / Telia CEE | 184 ms | 186 ms | 👍 Direct Marine Cable |
| 🇨🇳 Beijing & Shanghai | China Telecom / Unicom AS4837 | 175–195 ms | 178–198 ms | ⚡ Fast EU Route (AS4837/9929) |
3. Network Backbone, Transit & Uplink Architecture
- Full 2.5 Gbps Uplink by Default: Unlike Hetzner Cloud (1 Gbps) or Contabo (200 Mbps–1 Gbps), Netcup equips both Root Servers (RS G12) and Cloud VPS (G12) with standard 2.5 Gbps redundant NICs.
- 100% Unmetered Traffic: Netcup provides unmetered bandwidth with zero overage charges (€0.00/TB). If your server sustains extreme continuous traffic exceeding 120 TB in a single calendar month, Netcup may throttle the port to 300 Mbps until month-end under their fair-use policy, but you will never be billed surprise overage fees.
- Dedicated IPv4 & IPv6 Subnets Included: Each server includes 1 primary static public IPv4 address and a routed
/64IPv6 subnet at €0.00 extra monthly cost. - Arbor DDoS Protection: Automated multi-stage hardware DDoS scrubbing (Arbor Peakflow / TMS) actively mitigates Layer 3, Layer 4, and volumetric attacks with zero manual configuration required.
4. Test Netcup Network with Verified Free-Month Vouchers
Provision a live server to benchmark ping, bandwidth, and routing from your personal client base for €0.00: