SSL Certificate Examples · Example 3 of 4 in Valid Certificates

Mail Server on Port 465

GEThttps://api.deepinfo.com/v1/lookup/ssl

The certificate of smtp.gmail.com on port 465 (SMTP over TLS): issued by Google Trust Services WR2.

Param: target port
Value: smtp.gmail.com 465

Asks for the certificate of smtp.gmail.com on port 465, where mail submission runs over TLS.

port selects any port that speaks TLS from the start. The certificate is issued to smtp.gmail.com by WR2 of Google Trust Services, valid from September 4 to November 27, 2026, and signature.valid is true.

Request

curl

curl 'https://api.deepinfo.com/v1/lookup/ssl?target=smtp.gmail.com&port=465' \
  -H 'apikey: YOUR_API_KEY' \
  -H 'Accept: application/json'

Python

import requests

url = "https://api.deepinfo.com/v1/lookup/ssl"

params = {
    "target": "smtp.gmail.com",
    "port": "465"
}

headers = {
    "apikey": "YOUR_API_KEY",
    "Accept": "application/json"
}

response = requests.get(url, params=params, headers=headers)
response.raise_for_status()
print(response.json())

JavaScript

const url = "https://api.deepinfo.com/v1/lookup/ssl?target=smtp.gmail.com&port=465";

const response = await fetch(url, {
  method: "GET",
  headers: {
    "apikey": "YOUR_API_KEY",
    "Accept": "application/json"
  },
});

const data = await response.json();
console.log(data);

package main

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

func main() {
	req, err := http.NewRequest("GET", "https://api.deepinfo.com/v1/lookup/ssl?target=smtp.gmail.com&port=465", nil)
	if err != nil {
		panic(err)
	}
	req.Header.Set("apikey", "YOUR_API_KEY")
	req.Header.Set("Accept", "application/json")

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()

	body, err := io.ReadAll(res.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(body))
}

Java

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.deepinfo.com/v1/lookup/ssl?target=smtp.gmail.com&port=465"))
            .header("apikey", "YOUR_API_KEY")
            .header("Accept", "application/json")
            .GET()
            .build();

        HttpResponse<String> response = HttpClient.newHttpClient()
            .send(request, HttpResponse.BodyHandlers.ofString());

        System.out.println(response.body());
    }
}

using System;
using System.Net.Http;

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Get, "https://api.deepinfo.com/v1/lookup/ssl?target=smtp.gmail.com&port=465");
request.Headers.Add("apikey", "YOUR_API_KEY");
request.Headers.Add("Accept", "application/json");

using var response = await client.SendAsync(request);
Console.WriteLine(await response.Content.ReadAsStringAsync());

PHP

<?php

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL => 'https://api.deepinfo.com/v1/lookup/ssl?target=smtp.gmail.com&port=465',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'apikey: YOUR_API_KEY',
        'Accept: application/json',
    ],
]);

$response = curl_exec($curl);

if ($response === false) {
    throw new RuntimeException(curl_error($curl));
}

echo $response . PHP_EOL;

Ruby

require 'net/http'
require 'uri'

uri = URI('https://api.deepinfo.com/v1/lookup/ssl?target=smtp.gmail.com&port=465')

request = Net::HTTP::Get.new(uri)
request['apikey'] = 'YOUR_API_KEY'
request['Accept'] = 'application/json'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: uri.scheme == 'https') do |http|
  http.request(request)
end

puts response.body

Response

200 OK · application/json

Response Body

{
  "target": "smtp.gmail.com",
  "port": 465,
  "check_date": "2026-09-24T07:51:55Z",
  "connection_status": "success",
  "parsed": {
    "version": {
      "name": "v3",
      "value": "2"
    },
    "fingerprint_sha1": "9cc6cdd6b36b9e54f9992c609957bdf4291de33d",
    "fingerprint_sha256": "56b68d5383aba040f9fdedd5981c68c7a99b225398ffe1653d72f9f693b3a03a",
    "fingerprint_md5": "89d0bb3cfd504ac66175dfbeda9a52c3",
    "subject": {
      "dn": "CN=smtp.gmail.com",
      "common_name": "smtp.gmail.com",
      "country_name": null,
      "locality": null,
      "organization": null,
      "organizational_unit": null,
      "state": null
    },
    "signature": {
      "value": "P+xy1sG3SlNGsDa0Sss6UdrnRLay6VHVeuEx27+Tb9tMIi6Bn374KkhmziV6YKlY/VDTsDW2Zr36MzEBvXDvhrGCPt73S7NU6/B0eJ5AAtvyLA5K8f5q7hiX/lon+4A9TUhguvF/XS77uR/8E4UZehZED/a6mXumaKKodKR9Myqc1dI6W7mnWdM7I8iNryz7DM41hGhpdwkNdwfqBFEWqdRJ2F5b0/w8LEehUQL1jfnHozenQRt5PctYZJeSLEKdqQdEAeY+zPwn+9NH3q45Pn8fAJCtw7wzL5Pueyy3sd+Zq5j1vn9nuao8Als6NwUgL+d/QfmOlklqZviog7GtKg==",
      "self_signed": false,
      "valid": true,
      "valid_chain": true,
      "invalid_reason": null,
      "signature_algorithm": {
        "oid": "1.2.840.113549.1.1.11",
        "name": "sha256"
      }
    },
    "validity": {
      "start": "2026-09-04T08:06:06Z",
      "length": 7257599,
      "end": "2026-11-27T08:06:05Z"
    },
    "issuer": {
      "dn": "CN=WR2,O=Google Trust Services,C=US",
      "common_name": "WR2",
      "country_name": "US",
      "locality": null,
      "organization": "Google Trust Services",
      "organizational_unit": null,
      "state": null
    },
    "extensions": {
      "key_usage": {
        "digital_signature": true,
        "content_commitment": false,
        "key_agreement": false,
        "data_encipherment": false,
        "key_encipherment": false,
        "key_cert_sign": false,
        "crl_sign": false
      },
      "extended_key_usage": {
        "server_auth": true
      },
      "basic_constraints": {
        "is_ca": false
      },
      "subject_key_identifier": {
        "digest": "sdI25h/MaZierXIaGQUwC/Zw7ws="
      },
      "authority_key_identifier": {
        "key_identifier": "3hse7XkV1D43JMMhu+w0OW1CsjA="
      },
      "authority_info_access": {
        "caissuers_urls": "http://i.pki.goog/wr2.crt"
      },
      "subject_alt_name": {
        "dns_names": [
          "smtp.gmail.com"
        ]
      },
      "certificate_policies": [
        "2.23.140.1.2.1"
      ],
      "crl_distribution_points": [
        "http://c.pki.goog/wr2/oQ6nyr8F0m0.crl"
      ],
      "signed_certificate_timestamp": [
        {
          "log_id": "2AlVO5RPev/IFhlvlE+Fq7D4/F6HVSYPFdEucrtFSxQ=",
          "timestamp": 1788512767,
          "version": 0,
          "signature": "MEYCIQCN6WhJVDkoXm3/VdMEeCWeqVYcaHsKzUSGVcWAt/UmywIhAKq7ulJXVRBPUqlCXDsegaKuBqi3QZ8XPh83j8ehX7zU"
        },
        {
          "log_id": "yKPEf8ezrbk1awE/anoSbeM6TkOlxkb5l605dZkdz5o=",
          "timestamp": 1788512767,
          "version": 0,
          "signature": "MEUCIQCkqvu8qdIVxY4XOc1n1NA5Q2k0yPJ41ezI2EgOYmgVsAIgKrBXd4RYNcl1j0itwrQqkNuVA+GWmG3xpUegY4hMfUA="
        }
      ],
      "other_extensions": []
    },
    "serial_number": "246349298764636428579241512019471000134",
    "tbs_fingerprint": "849975163bd97ccc894d28d6447f1d35a602f18b68f75d85163ae712cca0f17c",
    "subject_key_info": {
      "fingerprint": {
        "hash_algorithm_name": "sha256",
        "value": "56b68d5383aba040f9fdedd5981c68c7a99b225398ffe1653d72f9f693b3a03a"
      },
      "key_algorithm": {
        "name": "ECDSA"
      },
      "ecdsa_public_key": {
        "length": "256",
        "x": "30307904854355130348630844051685995693209584004121285659339559419990873477868",
        "y": "51849704149115434465019893578704850223929266228159612295192606662239014631012"
      }
    },
    "has_expired": false,
    "fqdn_list": [
      "smtp.gmail.com"
    ]
  },
  "certificate": "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",
  "parse_errors": []
}

Content-Type: application/json
ratelimit-limit: 100
ratelimit-remaining: 97
ratelimit-reset: 6
x-ratelimit-limit-minute: 100
x-ratelimit-remaining-minute: 97
deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a

Request

What this example sends. Every parameter is documented on SSL; the exact request is in the code panel.

Parameter	Value
`target`query	`smtp.gmail.com`
`port`query	`465`

Reference updated September 24, 2026

Request

Related Examples