Do you know of any good whois service that allows for an unlimited number of requests to the server via the api? I have been searching, but I can't seem to find one. It would be really helpful if you could share any recommendations or suggestions.

I apologize, but is there an issue with the functionality of the whois command?

Regarding your question about domain information retrieval services, have you tried using the ip-api.com service? They provide options for retrieving data in both JSON and XML formats. It might be worth exploring this service as a potential solution for your needs.

Having access to reliable and efficient tools like the whois command and domain information retrieval services is crucial for various tasks, including troubleshooting network issues, identifying domain ownership, and gathering important details about registered domains.

In general, there are multiple approaches to implement the functionality you mentioned. May I know what specific data you are interested in receiving?

For instance, in PHP, you can utilize the API to achieve this task. Here's an example code snippet:

```php
$domain = "ya.ru";
$api = "http://whoisapi.netfox.ru/api_v1/?domain=$domain";
$result = file_get_contents($api);
if ($result) {
    echo "The domain is already registered.";
} else {
    echo "The domain is available!";
}
```

Alternatively, you can directly invoke the utility using PHP, like so:

```php
$domain = 'ya.ru';
exec("whois " . $domain, $output, $return_var);
foreach ($output as $line) {
    echo $line . '<br>';
}
```

Another approach involves writing specific data, such as a phone number, to a dоcument and then retrieving it from there. For example:

```bash
$ whois lds.ua | grep phone | awk '{print $2}'


These methods offer flexibility in extracting the desired information from domains using different techniques. Remember to choose the approach that best suits your specific requirements and programming environment.

Regular users do not have access to unlimited requests, as that privilege is typically reserved for registrars. However, you can overcome this limitation by utilizing a combination of IP bundling on your machine and the whois utility in the console.

If you encounter issues with the Whois command in Linux, one solution is to integrate an API to enhance its functionality. This way, you can continue using the command while leveraging the benefits of the API for improved performance and additional features.

It's important to note that incorporating an API into the Whois command can offer advantages such as increased efficiency and the ability to handle a larger volume of requests. Additionally, APIs can provide structured data formats like JSON or XML, making it easier to parse and analyze the retrieved domain information programmatically.

There are several domain WHOIS services available that offer API access with various limitations on the number of requests. One option to consider is WhoisXML API, which provides a comprehensive WHOIS database and offers different subscription plans with varying levels of request limits. Another popular choice is DomainTools, which also offers an API but requires a separate subscription. Both services provide reliable WHOIS data and have extensive dоcumentation to guide you through the integration process.

While it is uncommon to find WHOIS services that offer unlimited requests via their API, there are some services that provide a generous amount of queries per month or even customizable plans to meet your specific needs. Here are a few options worth considering:

1. WhoisXML API: They offer various subscription plans, including a dedicated WHOIS API plan with a high number of queries per month. Additionally, they have custom plans available to cater to specific requirements.

2. DomainTools: While DomainTools does not explicitly mention offering unlimited requests, they have API plans with generous query limits per month. They also provide custom pricing options for higher-volume users.

3. WhoAPI: This service provides different API plans based on the number of daily queries. While they don't offer unlimited requests, their higher-tier plans may accommodate your needs depending on the scale of your usage.

Unfortunately, most Whois services have limitations on API requests, such as rate limits, and charging per query. However, I did come across a few options that might interest you:

WhoisXML API offers a "Pro" plan that allows for 10,000 queries per day, but it's not explicitly stated as unlimited. Pricing starts at $29.95/month.
DomainTools offers a "Developer" plan that includes 5,000 queries per day, but it's not clear if this can be increased. Pricing starts at $99/month.
IP2Location offers a "Business" plan that includes 10,000 queries per day, but it's not explicitly stated as unlimited. Pricing starts at $49.95/month.
DNSstuff offers a "Pro" plan that includes 5,000 queries per day, but it's not clear if this can be increased. Pricing starts at $29.95/month.

Keep in mind that these services may have additional requirements, such as registration or verification, before granting access to their APIs.