| Date | IP Address |
| 2024-03-25 | 54.194.38.0 (ClassC) |
| 2025-10-20 | 52.50.99.33 (ClassC) |
| 2025-11-20 | 54.154.71.126 (ClassC) |
| Date | Domain | IP |
| merchant-api-routing-eu.playground.c2c.klarna.net | 2025-10-26 | 34.243.139.225 |
| cs-ups-eu.playground.c2c.klarna.net | 2025-10-20 | 52.50.99.33 |
| marqeta-tx-adapter-ap.production.c2c.klarna.net | 2025-03-23 | 52.64.19.142 |
| marqeta-tx-adapter-us.production.c2c.klarna.net | 2025-10-17 | 18.204.109.52 |
| gateway-us.production.c2c.klarna.net | 2025-09-02 | 34.206.8.125 |
| merchant-api-routing-eu.production.c2c.klarna.net | 2025-05-05 | 52.213.254.97 |
| frontend-event-router-eu.production.c2c.klarna.net | 2024-10-05 | 52.48.86.67 |
| nko-server-eu.production.c2c.klarna.net | 2025-05-08 | 52.50.253.146 |
| click-to-pay-eu.production.c2c.klarna.net | 2025-05-05 | 34.250.17.254 |
| nko-server-eu-production.eu-west-1-947743302701.prod.account.c2c.klarna.net | 2025-06-01 | 52.49.104.111 |
| cs-osma-eu-playground.eu-west-1-834534408961.prod.account.c2c.klarna.net | 2025-11-12 | 54.72.40.15 |
| frontend-event-router-eu-production.eu-west-1-110009069329.prod.account.c2c.klar | 2025-05-05 | 54.217.156.177 |