[Exit node] DDPS Tokyo, Japan CDN77 / Datacamp: native IP, R9-7900, 10Gbps, international connectivity detailed test

Testing DDPS; I bought it quite a while ago.

International connectivity is in section 3.

For the IIJ data center, see my other review.

DDPS Tokyo, Japan IIJ | native IP | R9-9900X | 10Gbps | International Connectivity Review

1. Configuration

Provider website: http://ddps.jp

🔗 Quick links

Note: the provider does not seem to care much about individual users. Provisioning and ticket response times are extremely long; you will probably receive IIJ, and tickets to change DC may not be handled.

upstreamis CDN77 / Datacamp

2. Node Quality

💻Basic information

R9-7900, with good performance.

Basic System Information:
---------------------------------
Uptime     : 0 days, 21 hours, 19 minutes
Processor  : AMD Ryzen 9 7900 12-Core Processor
CPU cores  : 1 @ 3693.060 MHz
AES-NI     : ✔ Enabled
VM-x/AMD-V : ✔ Enabled
RAM        : 929.7 MiB
Swap       : 976.5 MiB
Disk       : 21.0 GiB
Distro     : Debian GNU/Linux 12 (bookworm)
Kernel     : 6.12.57+deb13-cloud-amd64
VM Type    : STANDARD PC (I440FX + PIIX, 1996)
IPv4/IPv6  : ✔ Online / ✔ Online

IPv6 Network Information:
---------------------------------
ISP        : DDPS Networks, LLC
ASN        : AS18526 DDPS Networks, LLC
Host       : DDPS Networks, LLC
Location   : Tokyo, Tokyo (13)
Country    : Japan

fio Disk Speed Tests (Mixed R/W 50/50) (Partition -):
---------------------------------
Block Size | 4k            (IOPS) | 64k           (IOPS)
  ------   | ---            ----  | ----           ---- 
Read       | 376.41 MB/s  (94.1k) | 825.10 MB/s  (12.8k)
Write      | 377.41 MB/s  (94.3k) | 829.45 MB/s  (12.9k)
Total      | 753.82 MB/s (188.4k) | 1.65 GB/s    (25.8k)
           |                      |                     
Block Size | 512k          (IOPS) | 1m            (IOPS)
  ------   | ---            ----  | ----           ---- 
Read       | 945.34 MB/s   (1.8k) | 975.28 MB/s    (952)
Write      | 995.56 MB/s   (1.9k) | 1.04 GB/s     (1.0k)
Total      | 1.94 GB/s     (3.7k) | 2.01 GB/s     (1.9k)

Geekbench 5 Benchmark Test:
---------------------------------
Test            | Value                         
                |                               
Single Core     | 1902                          
Multi Core      | 1849                          
Full Test       | https://browser.geekbench.com/v5/cpu/23920299

 SysBench CPU Test (Fast Mode, 1-Pass @ 5sec)
---------------------------------
 1 Thread Test (Single Core) Score:          6002 Scores
 SysBench Memory Test (Fast Mode, 1-Pass @ 5sec)
---------------------------------
 Single-thread Read Test:          73026.21 MB/s
 Single-thread Write Test:          39721.93 MB/s

🎬IP quality

Japan native IP, with good unlocking.

IPv4	IPv6

🌐Network quality

IPv4	IPv6

📍Return route

IPv4	IPv6

3. International connectivity - iPerf3 TCP IPv4 Single-threadspeed test (10 seconds per run, 2025-11-23)

It is also a machine with large local bandwidth. Cross-border latency is not especially exceptional, but speeds to Asia-Pacific and the United States are good. Overall, it is better than the IIJ model.

[Test records]

Japan-US connectivity

During testing, the CDN77 model to Misaka Seattle used COGENT->GTT outbound and TATA return, with very high latency. To Los Angeles BAGE LA1 it used GSL outbound and NTT return; with BAGE LA2 it used PCCW both ways.

Hong Kong-Japan connectivity

The CDN77 model uses GSL both ways with DMIT and GreenCloud DC1. Halo STD (Akari) to DDPS uses PCCW outbound and TATA return. DDPS->Bage HKS uses NTT. DDPS->RFC JINX uses PCCW.

4. Summary

Native IP, good unlocking, and a large local port. International connectivity is much better than the IIJ model. It suits landing-node use, not direct connection.

5. About the tests

The machines tested in this article, including all machines used for iPerf3 speed tests, were purchased at my own expense. Results may be time-sensitive.
Kernel parameters of the tested machines (/etc/sysctl.conf) are as follows

fs.file-max = 6815744
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_ecn=0
net.ipv4.tcp_frto=0
net.ipv4.tcp_mtu_probing=0
net.ipv4.tcp_rfc1337=0
net.ipv4.tcp_sack=1
net.ipv4.tcp_fack=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_adv_win_scale=1
net.ipv4.tcp_moderate_rcvbuf=1
net.core.rmem_max=33554432
net.core.wmem_max=33554432
net.ipv4.tcp_rmem=4096 87380 33554432
net.ipv4.tcp_wmem=4096 16384 33554432
net.ipv4.udp_rmem_min=8192
net.ipv4.udp_wmem_min=8192
net.ipv4.ip_forward=1
net.ipv4.conf.all.route_localnet=1
net.ipv4.conf.all.forwarding=1
net.ipv4.conf.default.forwarding=1
net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr
net.ipv6.conf.all.forwarding=1
net.ipv6.conf.default.forwarding=1