Update Namecheap Dynamic DNS with Public IP

The workflow JSON

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{
  "nodes": [
    {
      "name": "Cron",
      "type": "n8n-nodes-base.cron",
      "position": [
        380,
        300
      ],
      "parameters": {
        "triggerTimes": {
          "item": [
            {
              "mode": "everyX",
              "unit": "minutes",
              "value": 15
            }
          ]
        }
      },
      "typeVersion": 1
    },
    {
      "name": "Checks IP if new",
      "type": "n8n-nodes-base.function",
      "position": [
        740,
        300
      ],
      "parameters": {
        "functionCode": "const staticData = getWorkflowStaticData('global');\nconst newItem = items.map(item => item.json[\"ip\"]);\nconst ildItem = staticData.ildItem; \n\nif (!ildItem) {\n  staticData.ildItem = newItem;\n  return items;\n}\n\n\nconst actualnewItem = newItem.filter((id) => !ildItem.includes(id));\nconst actualItem = items.filter((data) => actualnewItem.includes(data.json['ip']));\nstaticData.ildItem = [...actualnewItem, ...ildItem];\n\nreturn actualItem;"
      },
      "typeVersion": 1
    },
    {
      "name": "subdomains",
      "type": "n8n-nodes-base.function",
      "position": [
        1100,
        300
      ],
      "parameters": {
        "functionCode": "items[0].json = {\n    value: [\n        {id: \"subdomain1\"},\n        {id: \"subdomain2\"},\n        {id: \"subdomain3\"}\n    ]\n};\nreturn items;"
      },
      "typeVersion": 1
    },
    {
      "name": "Loops trough Subdomain list",
      "type": "n8n-nodes-base.function",
      "position": [
        1280,
        300
      ],
      "parameters": {
        "functionCode": "const newItems = [];\n\nfor (const item of items[0].json.value) {\n  newItems.push({json: item});\n}\n\nreturn newItems;"
      },
      "typeVersion": 1
    },
    {
      "name": "Send data to Namecheap",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        1460,
        300
      ],
      "parameters": {
        "url": "=https://dynamicdns.park-your-domain.com/update?host={{$node[\"Loops trough Subdomain list\"].parameter[\"functionCode\"]}}test&domain={{$node[\"yourdomain.com\"].parameter[\"values\"][\"string\"][0][\"value\"]}}&password={{$node[\"yourdomain.com\"].parameter[\"values\"][\"string\"][1][\"value\"]}}&ip={{$node[\"Get Public IP address\"].json[\"ip\"]}}",
        "options": {},
        "responseFormat": "string"
      },
      "typeVersion": 1
    },
    {
      "name": "Get Public IP address",
      "type": "n8n-nodes-base.httpRequest",
      "position": [
        560,
        300
      ],
      "parameters": {
        "url": "https://api.ipify.org?format=json",
        "options": {},
        "jsonParameters": true,
        "allowUnauthorizedCerts": true
      },
      "retryOnFail": true,
      "typeVersion": 1,
      "continueOnFail": true
    },
    {
      "name": "yourdomain.com",
      "type": "n8n-nodes-base.set",
      "position": [
        920,
        300
      ],
      "parameters": {
        "values": {
          "string": [
            {
              "name": "domain",
              "value": "yourdomain.com"
            },
            {
              "name": "password",
              "value": "your-namecheap-ddns-password"
            }
          ]
        },
        "options": {},
        "keepOnlySet": true
      },
      "typeVersion": 1
    }
  ],
  "connections": {
    "Cron": {
      "main": [
        [
          {
            "node": "Get Public IP address",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "subdomains": {
      "main": [
        [
          {
            "node": "Loops trough Subdomain list",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "yourdomain.com": {
      "main": [
        [
          {
            "node": "subdomains",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Checks IP if new": {
      "main": [
        [
          {
            "node": "yourdomain.com",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get Public IP address": {
      "main": [
        [
          {
            "node": "Checks IP if new",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Loops trough Subdomain list": {
      "main": [
        [
          {
            "node": "Send data to Namecheap",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

About this workflow

Push Your Public Ip To Namecheaps Dynamic Dns. Uses httpRequest. Scheduled trigger; 7 nodes.

Source: https://github.com/Zie619/n8n-workflows — original creator credit. Request a take-down →

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