Top Domain Name Checker API alternatives in 2025

Top Domain Name Checker API Alternatives in 2025

As the digital landscape continues to evolve, the need for reliable domain name checking APIs has never been more critical. Whether you are a developer, a business owner, or a digital marketer, having access to robust APIs that can help you manage domain names efficiently is essential. In this blog post, we will explore some of the best alternatives to the Domain Availability Checker API, highlighting their features, capabilities, pricing, pros and cons, ideal use cases, and how they differ from the Domain Availability Checker API.

Domain Availability Checker API

The Domain Availability Checker API is a powerful tool that allows users to check the availability of a specific domain name and retrieve its age. This API is particularly useful for developers looking to create applications that require domain registration functionalities.

Key features of the Domain Availability Checker API include:

• Check Domain: Pass the domain you want to check, and receive information such as creation date, update date, expiration date, and availability status (true or false). This feature is essential for applications that need to verify if a domain is available for registration.

{"example.org":false,"foo.com":false,"somefoobardomain.io":true}

Typical use cases include developing applications for domain registration, creating websites that help users find available domains, and conducting market research on domain availability trends.

Now, let’s explore some alternatives to the Domain Availability Checker API.

Domain Expiration Checker API

The Domain Expiration Checker API allows users to check the expiration date of any domain name by simply providing the domain name. This API returns the remaining days until expiration, making it easy to keep track of your own domains or monitor your competitors' domains.

Key features of the Domain Expiration Checker API include:

• Get Expiration: This feature checks the expiration date of a given URL. By providing the domain name, users can receive information about when the domain was registered and when it is set to expire.

{"domain":{"domain_url":"https://www.sunvalleyerp.com","updated_at":"2025-03-11T22:34:30.000000Z"},"success":true,"domain_registration_data":{"domain_age_date":"2023-04-18","domain_age_days_ago":693,"domain_expiration_date":"2025-04-18","domain_expiration_days_left":37},"api_usage":{"this_month_api_calls":18,"remaining_api_calls":999982}}

This API is ideal for businesses and website owners who need to keep track of their own domains, monitor competitors' domains, or check the availability of a domain name for registration.

Domain Name Availability API

The Domain Name Availability API swiftly checks domain name availability, streamlining online presence management and securing the right virtual addresses.

Key features of the Domain Name Availability API include:

• Check Domain: To use this feature, users must indicate the URL of a domain in the parameter. This allows for quick checks on whether a domain is available for registration.

{"status":"Available","timeElapsed":10}

This API is particularly useful for businesses and individuals looking to establish their online presence by securing the right domain names.

Domain Age Checker API

The Domain Age Checker API allows users to determine the age of a given domain easily. This API provides information about how old the domain is, which can be crucial for assessing its credibility.

Key features of the Domain Age Checker API include:

• Age Checker: This feature allows users to know how old a given domain is, retrieving data as age in days, months, and years. It also indicates whether the domain is registered or not.

{"data":{"host":"zylalabs.com","debug_message":"","domain_age_found":true,"domain_registered":"yes","domain_creation_date":"2021-01-26","domain_age_in_days":1430,"domain_age_in_months":46,"domain_age_in_years":3},"credits_remained":17.5,"estimated_queries":"35","elapsed_time":"0.46","success":true}

This API is ideal for assessing a domain's credibility and conducting competitive analysis by understanding domain age and history.

Domain Name Lookup API

The Domain Name Lookup API offers domain ownership, registration, and contact information, aiding cybersecurity, research, and domain management.

Key features of the Domain Name Lookup API include:

• Domain Information: Users must indicate the URL of a domain in the parameter to retrieve crucial information about the domain name, including registrant details and administrative contacts.

{"message": "Response is not available at the moment. Please check the API page"}

This API is essential for verifying the legitimacy of a domain and managing domain portfolios effectively.

Domain Search Availability API

The Domain Search Availability API is a comprehensive tool that allows users to check the availability of domain names, validate domain availability, retrieve expiration dates, obtain pricing information, and access WHOIS data.

Key features of the Domain Search Availability API include:

• Search Domain: This feature checks domain availability, including domain validation, expiration, prices, and domain quality aspects.

{"status":"OK","request_id":"4b1d2437-0ef3-4d43-98fa-1345eb2f58b9","parameters":{"domain":"example-domain-123.com","currency":"USD"},"data":{"domain":"example-domain-123.com","sld":"example-domain-123","tld":"com","valid":true,"available":true,"register_price":"0","purchase_price":"0","transfer_price":"12","renew_price":"12","currency":"USD","is_premium":false,"is_aftermarket":false,"whois_privacy_offered":true,"domain_positives":["All time worldwide popular tld","Correct spelling","Okay transcribability"],"domain_negatives":["Long length"]}}

This API is particularly useful for users looking to make informed decisions about domain registration and management.

Domain Lookup API

The Domain Lookup API provides developers with two endpoints to check domain availability and perform WHOIS domain lookup.

Key features of the Domain Lookup API include:

• Check Domain Availability: This feature enables users to validate a domain's availability and retrieve various domain-related data by providing the domain URL.

{"status":"OK","request_id":"279d959e-5eca-46aa-bb29-d6fc1b507a35","parameters":{"domain":"applesupport.app","currency":"USD"},"data":{"domain":"applesupport.app","sld":"applesupport","tld":"app","valid":true,"available":true,"register_price":"0","purchase_price":"0","transfer_price":"14","renew_price":"14","currency":"USD","is_premium":false,"is_aftermarket":false,"tld_requirement":"HSTS_PRELOAD","whois_privacy_offered":true,"domain_positives":["Recent worldwide popular tld","Correct spelling","Okay transcribability"]}}

• Check Whois Domain: This feature allows users to perform a WHOIS domain lookup by providing the domain URL.

{"status":"OK","request_id":"f1a068f9-d73a-4c81-9725-47f6655ccca1","parameters":{"domain":"netflix.com"},"data":{"domain":"netflix.com","sld":"netflix","tld":"com","whois":"Domain Name: netflix.com\nRegistry Domain ID: 1404215_DOMAIN_COM-VRSN\nRegistrar WHOIS Server: whois.markmonitor.com\nRegistrar URL: http://www.markmonitor.com\nUpdated Date: 2021-10-09T09:37:28+0000\nCreation Date: 1997-11-11T05:00:00+0000\nRegistrar Registration Expiration Date: 2023-11-10T00:00:00+0000\nRegistrar: MarkMonitor, Inc.\nRegistrar IANA ID: 292\nRegistrar Abuse Contact Email: [email protected]\nRegistrar Abuse Contact Phone: +1.2086851750\nDomain Status: clientUpdateProhibited (https://www.icann.org/epp#clientUpdateProhibited)\nDomain Status: clientTransferProhibited (https://www.icann.org/epp#clientTransferProhibited)\nDomain Status: clientDeleteProhibited (https://www.icann.org/epp#clientDeleteProhibited)\nDomain Status: serverUpdateProhibited (https://www.icann.org/epp#serverUpdateProhibited)\n"}}

This API is valuable for developers, marketers, and business owners looking to optimize their online presence.

Registration Information Checker API

The Registration Information Checker API efficiently confirms domain ownership information, enhancing online security, brand management, and domain research effortlessly.

Key features of the Registration Information Checker API include:

• Domain Information: Users must indicate the name of a domain and its extension to retrieve comprehensive domain registration data.

{"sld":"facebook","tld":"com","valid":true,"available":false,"creation_date":"1997-03-29 05:00:00","updated_date":"2023-04-26 19:04:19","expiration_date":"2032-03-30 04:00:00"}

This API is crucial for verifying domain ownership and assessing domain status, making it an essential tool for businesses and individuals alike.

Domain Authority API

The Domain Authority API is a tool that allows users to check the domain authority score of any website. This score indicates the website's credibility and ranking potential based on various factors such as backlinks and content quality.

Key features of the Domain Authority API include:

• Authority Checker: This feature retrieves the domain authority and page rank for any domain or URL, providing insights into its credibility.

{"success":true,"message":"Success! Generated","result":{"domain_stats":{"domain_power":79,"page_power":27,"organic_clicks":9274000,"average_rank":51,"keywords_rank":7453999}}}

This API is particularly useful for SEO analysis, competitor analysis, and overall website evaluation for marketing or investment purposes.

Daily Domain Detection API

The Daily Domain Detection API identifies phishing and squatting domains among newly registered ones, bolstering cybersecurity and trust online.

Key features of the Daily Domain Detection API include:

• Detect Fake Domains: Users must indicate the name of a company in the parameter to receive relevant data about potentially malicious domains associated with that name.

{"response": "success", "keyword": "google", "count": 36, "domains": ["118924-google.com", "94google.com", "bestgoogleresults.com", "embedgooglemap.com", "gdseogoogle.com", "goocle.cn", "google-dino.ru", "google88.cc", "googlebusinessprofilesuspended.com", "googlecaster.net", "googlecommercial.com", "googledhsjk.com", "googledomian.shop", "googleedua.xyz", "googlehdhsh.com", "googlehfjsj.com", "googlemcc.com", "googleochrome.com", "googleofanyi.com", "googleplayid.top", "googlepllev.com", "googlereklaamid.ee", "googletgmanagers.online", "googleusd.online", "googll.com.cn", "googly.pro", "gooogle.com.ng", "hoogle.id", "playgooglecomstoreapps.sbs", "reversegooglesearch.com", "seogoogles.com", "service-google.cn", "thegoogle.ru", "wwmgoogle.com", "wwwgoogleit.com", "xn--rfrencement-google-bwbb.today"]}

This API is essential for organizations looking to protect their brand and users from phishing attacks and domain spoofing.

Conclusion

In conclusion, while the Domain Availability Checker API is a robust tool for checking domain availability, there are several alternatives available that cater to different needs. The Domain Expiration Checker API is ideal for tracking domain expiration dates, while the Domain Name Availability API simplifies the process of securing domain names. For those interested in assessing domain credibility, the Domain Age Checker API and Domain Authority API provide valuable insights. Additionally, the Daily Domain Detection API is crucial for cybersecurity, helping to identify potentially malicious domains.

Ultimately, the best alternative depends on your specific requirements, whether it's domain registration, monitoring, or cybersecurity. By understanding the features and capabilities of these APIs, you can make informed decisions that enhance your online presence and security.