| Date | IP Address |
| 2023-08-26 | 104.100.76.236 (ClassC) |
| 2023-10-31 | 23.198.161.79 (ClassC) |
| 2024-04-13 | 23.222.154.245 (ClassC) |
| 2024-09-17 | 184.25.246.87 (ClassC) |
| 2024-10-08 | 23.198.152.83 (ClassC) |
| 2024-11-25 | 23.196.144.163 (ClassC) |
| 2024-12-28 | 23.206.50.225 (ClassC) |
| 2025-01-02 | 23.55.140.164 (ClassC) |
| 2025-03-01 | 23.194.186.152 (ClassC) |
| 2025-03-15 | 184.27.192.145 (ClassC) |
| 2025-09-03 | 23.218.185.113 (ClassC) |
| 2026-03-03 | 23.218.186.148 (ClassC) |
| Date | Domain | IP |
| media.costco.co.jp | 2023-08-26 | 104.100.76.236 |
| build.costco.co.jp | 2026-01-26 | 104.198.118.165 |
| image-store.costco.co.jp | 2025-09-01 | 130.211.171.249 |
| link.costco.co.jp | 2025-09-03 | 217.175.192.66 |
| origin.costco.co.jp | 2025-09-01 | 35.244.182.159 |
| preprod2-sip.costco.co.jp | 2023-08-25 | 23.196.192.202 |
| media-preprod2-sip.costco.co.jp | 2023-08-25 | 23.196.192.202 |
| origin-preprod2-sip.costco.co.jp | 2026-02-07 | 35.190.83.89 |
| bo-preprod2-sip.costco.co.jp | 2025-09-03 | 35.244.202.252 |
| content-preprod2-sip.costco.co.jp | 2026-01-04 | 34.98.103.188 |
| prod-sip.costco.co.jp | 2023-08-26 | 104.100.76.236 |
| preprod-sip.costco.co.jp | 2023-08-25 | 23.196.192.202 |
| media-preprod-sip.costco.co.jp | 2023-08-25 | 23.74.145.45 |
| origin-preprod-sip.costco.co.jp | 2026-02-07 | 35.244.199.235 |
| bo-preprod-sip.costco.co.jp | 2026-02-04 | 35.227.253.173 |
| content-preprod-sip.costco.co.jp | 2026-02-10 | 35.244.226.130 |
| perf-sip.costco.co.jp | 2023-08-25 | 23.196.192.202 |
| media-perf-sip.costco.co.jp | 2023-08-25 | 23.196.192.202 |
| recruit.costco.co.jp | 2026-01-30 | 199.36.158.100 |
| content.costco.co.jp | 2026-01-24 | 35.244.233.175 |
| rakuraku-inv.costco.co.jp | 2025-07-31 | 133.186.35.87 |
| www.costco.co.jp | 2023-08-26 | 104.100.76.236 |
| impex.costco.co.jp | 2026-01-24 | 35.190.233.125 |