| Date | IP Address |
| 2021-12-09 | 34.255.231.169 (ClassC) |
| 2022-07-12 | 54.154.195.14 (ClassC) |
| 2024-04-02 | 54.247.129.67 (ClassC) |
| 2024-08-17 | 34.246.108.164 (ClassC) |
| 2025-05-08 | 52.50.253.146 (ClassC) |
| 2025-05-13 | 34.250.246.238 (ClassC) |
| 2025-05-18 | 54.216.250.95 (ClassC) |
| 2025-06-28 | 34.241.140.231 (ClassC) |
| 2025-07-04 | 54.73.59.40 (ClassC) |
| 2025-08-18 | 54.73.151.34 (ClassC) |
| 2025-09-01 | 52.16.55.192 (ClassC) |
| 2025-10-01 | 54.195.154.61 (ClassC) |
| 2025-10-26 | 52.18.136.6 (ClassC) |
| 2025-12-08 | 54.228.97.212 (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 |
| frontend-event-router-us.production.c2c.klarna.net | 2025-11-21 | 3.216.52.223 |
| 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 |