哪里可以买备案好的域名

// 购买域名
const tencentcloud = require('tencentcloud-sdk-nodejs');
const domainClient = new tencentcloud.domain.v20180808.Client({
  credential: {
    secretId: 'your_secret_id',
    secretKey: 'your_secret_key',
  },
  region: 'ap-guangzhou',
  profile: {
    httpProfile: {
      endpoint: 'domain.tencentcloudapi.com',
    },
  },
});

domainClient.CreateDomain({
  DomainName: 'example.com',
}).then(
  (data) => {
    console.log(data);
  },
  (err) => {
    console.error("error", err);
  }
);

// 进行备案
const recordClient = new tencentcloud.cns.v20180315.Client({
  credential: {
    secretId: 'your_secret_id',
    secretKey: 'your_secret_key',
  },
  region: 'ap-guangzhou',
  profile: {
    httpProfile: {
      endpoint: 'cns.tencentcloudapi.com',
    },
  },
});

recordClient.CreateRecord({
  Domain: 'example.com',
  RecordType: 'A',
  Value: '192.168.0.1',
}).then(
  (data) => {
    console.log(data);
  },
  (err) => {
    console.error("error", err);
  }
);