Could you suggest a reliable domain name tracking service? I previously relied on whois.domaintools.com, but their notification of changes came a couple of days late after I registered the domain.

whois utility is highly demanded by users due to its substantial configuration file consisting of around 1000 lines and containing WHOIS servers for domains and subdomains at all levels. However, it requires daily updates to keep the information current as some servers may stop working while new ones come into operation resulting in less than 100% effectiveness.

If you are looking for a good alternative, Ruby Pwhois is highly recommended as its configurations and updates are released weekly. This software offers a file tree format with separately prescribed queries and output results, ensuring that the domain owner is discovered.

For additional options, you may also consider utilizing the following resources:

https://lookup.icann.org/
https://hostadvice.com/tools/whois-domain/
https://whois.eurid.eu/en/ - ideal for checking the .eu zone (EU)
https://www.webnames.ru/whois
https://www.nic.lv/whois?lang=en - great for checking the .lv zone (Latvia)

It's crucial to have access to reliable and up-to-date domain name information, especially if you own multiple domains or run an online business. By staying on top of changes and updates, you can protect your brand and prevent any unauthorized access or ownership changes.

If you are based in Ukraine, the 2IP.UA project might be worth looking into as it not only offers a standard WHOIS service but also allows you to register a domain name through the site. In addition, several helpful tools are available such as an online punycode converter, password generator, text encryption, and spam database checks. You can also check the existence of an e-mail and calculate file upload time.

On the other hand, WHO.IS is a widely popular standard WHOIS service that doesn't offer any additional features. However, its simplicity and ease of use make it a go-to option for many users worldwide.

Having access to reliable WHOIS services is essential for maintaining your online presence and protecting your brand. Whether you're registering a new domain or monitoring changes to existing ones, these tools can help ensure that you stay on top of any necessary updates and remain in control of your online assets.

Here are a few services that are known for their prompt notifications and comprehensive tracking features:

DomainTools: Despite your experience, DomainTools is generally known for its robust monitoring and alerting capabilities. It might be worth reaching out to their support to see if there's a way to expedite notifications.

Namecheap's Domain Watcher: This tool offers real-time alerts for domain status changes and is integrated with their registration services.

Dynadot's Domain Monitoring: Offers monitoring services that notify you of changes to domain registration details.

ICANN's WHOIS: While not a monitoring service, it's the definitive source for current domain registration data. Some third-party services offer alert systems based on ICANN's data.

When selecting a service, consider the following:

Notification Speed: How quickly the service notifies you of changes.
Data Accuracy: The reliability of the information provided.
User Interface: How easy it is to set up and manage alerts.
Cost: Whether the service fits within your budget.

Keep your domain registrar's contact information up-to-date to receive timely notifications directly from them. Monitoring domain names is an ongoing process, and combining a good service with best practices will ensure you're always informed of important changes.