Get indexed masterchain range

curl --request GET \
  --url https://toncenter.com/api/v3/masterchainInfo

import requests

url = "https://toncenter.com/api/v3/masterchainInfo"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://toncenter.com/api/v3/masterchainInfo', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://toncenter.com/api/v3/masterchainInfo",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://toncenter.com/api/v3/masterchainInfo"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://toncenter.com/api/v3/masterchainInfo")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://toncenter.com/api/v3/masterchainInfo")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body

{
  "first": {
    "after_merge": true,
    "after_split": true,
    "before_split": true,
    "created_by": "<string>",
    "end_lt": "0",
    "file_hash": "<string>",
    "flags": 123,
    "gen_catchain_seqno": 123,
    "gen_utime": "0",
    "global_id": 123,
    "key_block": true,
    "master_ref_seqno": 123,
    "masterchain_block_ref": {
      "seqno": 123,
      "shard": "0",
      "workchain": 123
    },
    "min_ref_mc_seqno": 123,
    "prev_blocks": [
      {
        "seqno": 123,
        "shard": "0",
        "workchain": 123
      }
    ],
    "prev_key_block_seqno": 123,
    "rand_seed": "<string>",
    "root_hash": "<string>",
    "seqno": 123,
    "shard": "0",
    "start_lt": "0",
    "tx_count": 123,
    "validator_list_hash_short": 123,
    "version": 123,
    "vert_seqno": 123,
    "vert_seqno_incr": true,
    "want_merge": true,
    "want_split": true,
    "workchain": 123
  },
  "last": {
    "after_merge": true,
    "after_split": true,
    "before_split": true,
    "created_by": "<string>",
    "end_lt": "0",
    "file_hash": "<string>",
    "flags": 123,
    "gen_catchain_seqno": 123,
    "gen_utime": "0",
    "global_id": 123,
    "key_block": true,
    "master_ref_seqno": 123,
    "masterchain_block_ref": {
      "seqno": 123,
      "shard": "0",
      "workchain": 123
    },
    "min_ref_mc_seqno": 123,
    "prev_blocks": [
      {
        "seqno": 123,
        "shard": "0",
        "workchain": 123
      }
    ],
    "prev_key_block_seqno": 123,
    "rand_seed": "<string>",
    "root_hash": "<string>",
    "seqno": 123,
    "shard": "0",
    "start_lt": "0",
    "tx_count": 123,
    "validator_list_hash_short": 123,
    "version": 123,
    "vert_seqno": 123,
    "vert_seqno_incr": true,
    "want_merge": true,
    "want_split": true,
    "workchain": 123
  }
}

{
  "code": 123,
  "error": "<string>"
}