Servers & Network
Server domains and IP addresses by environment for Easy Cash (Firm Banking) integration. Refer to the information below when configuring your firewall.
Easy Cash Direct Debit (Firm Banking) APIs are called directly from your backend server using JSON over HTTPS.
Authentication, account management, transfer, recurring billing, and inquiry APIs all use the servers listed below.
| Environment | Domain | IP Address | Protocol |
|---|---|---|---|
| Sandbox | tbnpay.settlebank.co.kr | 61.252.169.31 | HTTPS (TCP/443) |
| Production Primary | npay.settlebank.co.kr | 61.252.169.27 | HTTPS (TCP/443) |
| Production Secondary | npay.settlebank.co.kr | 14.34.14.24 | HTTPS (TCP/443) |
NOTE
Dedicated Server for KFTC Direct Debit Deregistration Inquiry
The KFTC direct debit deregistration inquiry API (/v1/api/acnt/isttunreg/list) uses a separate server.
• Sandbox: tb-nspay.settlebank.co.kr
• Production: nspay.settlebank.co.kr
NOTE
Dual-IDC Redundancy
• The Hecto Financial Easy Cash system operates with Primary and Secondary data centers for high availability.
• If the Primary center fails, traffic automatically switches to Secondary. Allow both Primary and Secondary IPs in your firewall rules.
• DNS-based connection is recommended — failover is handled automatically. Hardcoding IP addresses in the hosts file will prevent automatic failover.
