ISPAPI High Performance DomainChecker Module

ISPAPI High Performance DomainChecker Module

Developed By Hexonet

Compatible with WHMCS v7.7

The ISPAPI DomainChecker addon supports the following functions and features:

  • High-performance Domain Availability Checks using our registrar API
  • Support of Premium Domains (Aftermarket and Registry Premium Domains)
  • API Suggestion Engine integrated
  • Categorization of the TLDs for an improved user experience
    • Default categories pre-configured
    • Search results based on the category selection
  • Backorder button in the search results (when having also our whmcs backorder module installed)
    • Add or Remove backorders instantly in the search results
    • WHOIS information for taken domains
  • Featuring each domain with availability and type of premium domain name
  • Featuring prices of domains
    • Registration and renewal prices
    • Premium domains with markup prices
  • Adding of domains to the cart instantly possible in the search results
  • Removing of domains from the cart instantly possible in the search results
  • Supports multiple currencies
  • Support for English and German. (If any other language is required, please contact us)
  • Ajax driven search (no page reload)
  • Search trigger over the URL (helpful for landing pages)
    • For example: mydomainchecker.php?, will trigger the search of “” in the category ID=3
  • Easy to install and use

... and MORE!

The documentation is included in the ZIP file.


A public demo site is available at: (demo/demo)



5 stars
4 stars
3 stars
2 stars
1 star

Vincent S @Vinny14

July 27, 2018 at 03:09:42 PM

Great module. OpenSRS could learn something here.

If there is no reliable option for domain availability checks, there are just so many sales dropping out.
Hexonet is my second registrar, but could become my only one.

  • 7 months ago
  • Version Number 7.3.1

Ann-Christin Schmidt @annchristin4077

May 6, 2018 at 05:12:08 PM

Mittlerweile nah an den Ressellerclub Free Tools dran. Die WHMCS Plugins haben sich wirklich gemacht und es war eine gute Entscheidung gänzlich auf Hexonet zu wechseln.

  • 10 months ago
  • Version Number 7.3.0

Silvio Mazenauer @ORC-Webhosting

September 14, 2016 at 02:26:19 PM

Wir arbeiten schon viele Jahre mit Hexonet und für uns gibt es nichts besseres oder vergleichbares. Hexonet bietet viele Vorteile. Erstens sind die Preise sehr gut. Zweitens ist das Dashboard sehr gut verständlich und einfach zu bedienen und drittens hat Hexonet einen absolut perfekten, schnellen und sehr kompetenten Support.

Der Domainchecker von Hexonet ist der schnellste Domainchecker den man überhaupt finden kann.
Einfach nur zu empfehlen!!!

  • 2 years ago
  • Version Number 6.0.5

Hash Varsani @Atelier-Hosting

July 26, 2016 at 07:18:28 PM

This is the fastest domain checker I've seen. Very happy with this module and no longer worry about client downtime when making WHOIS checks.

The Hexonet support is superb. Just tell them what you want and they'll help in every way they can. Awesome!!

  • 2 years ago
  • Version Number 6.0.5

Peter Richter @prichter

July 26, 2016 at 12:42:53 PM

WHOIS checks are always slow and not accurate. I'm using this module and I'm very happy with it ! It delivery fast checks !

Thanks HEXONET for this module and all the support !

  • 2 years ago
  • Version Number 6.0.5

Version Compatibility

Compatible with WHMCS v7.7

Full Version Compatibility

  • All versions of WHMCS v7.7
  • All versions of WHMCS v7.6
  • All versions of WHMCS v7.5
  • All versions of WHMCS v7.4
  • Selected versions of WHMCS v7.3
  • All versions of WHMCS v7.2
  • All versions of WHMCS v7.1
  • All versions of WHMCS v7.0
  • All versions of WHMCS v6.3
  • All versions of WHMCS v6.2
  • All versions of WHMCS v6.1
  • All versions of WHMCS v6.0

System Requirements

  • ISPAPI Registrar Module version 1.0.45 or higher – available at
  • HEXONET Live or Test Account configured in the ISPAPI Registrar Module – Create a free account at

* Requirements listed are in addition to the WHMCS default system requirements.

Support for this product

The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.

Developed By Hexonet


v8.2.4 Released March 14th, 2019

Latest Version

8.2.4 (2019-03-14)

Bug Fixes

  • init.php: path detection (5cfe663)


Previous Versions

v8.2.3 Released March 11th, 2019

View/hide detailed changelog

8.2.3 (2019-03-11)

Bug Fixes

  • init.php: review path detection (b59edde)


v8.2.2 Released November 19th, 2018

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Bug Fixes

  • symlinks: added support for integration of the module via symlinks

NOTE: this feature is in general thought for our internal development process


v8.2.1 Released November 5th, 2018

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Bug Fixes:

  • semantic-release: update new version in php file (f3a4bd4)


v8.2.0 Released October 24th, 2018

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No changes, tested release process.


v8.1.0 Released October 19th, 2018

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  • releaseInfo: add json file covering repository info (2ab53b9)


v8.0.0 Released October 12th, 2018

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Bug Fixes:

  • pkg: migrated to GitHub (39874de)
  • script: add x-bit (7c6d072)


  • pkg: we need to trigger a major release because of the new release process.


v7.3.3 Released August 7th, 2018

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  • Fix for "Transfer" button issue on the Homepage
  • The domainchecker is now checking all supported TLDs over API, even if the TLD is not configured with ispapi/hexonet
  • Minor changes in the template


v7.3.1 Released May 23rd, 2018

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  • minor fixes in the domainchecker template


v7.3.0 Released April 16th, 2018

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  • MINIMUM REQUIREMENTS: ISPAPI Registrar Module v1.0.53 at least
  • complete relaunch of the user interface
  • integration of API Suggestion Engine
  • premium domains support simplified (Premium domains now supported in WHMCS)
  • manual adding of pricing for premium domains no more required, prices are taken from the API, markup (in %) can be defined by the reseller in WHMCS directly
  • removed sub-categories (only 1 level of categories will be displayed)
  • added button to add default categories
  • adding/removing of elements to/from the cart instantly possible in the search results
  • renewal pricing displayed in the search results
  • language files have been updated


v7.2.3 Released February 8th, 2018

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  • workflow update for Aftermarket Premium Domains (They were not added properly to the cart)


v7.2.2 Released January 11th, 2018

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  • fix for special characters in user password


v7.2.1 Released October 20th, 2017

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  • minor fixes in the domainchecker template


v7.2.0 Released August 7th, 2017

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  • added whois fallback to WHMCS's DomainLookup when HEXONET's QueryDomainWhoisInfo API command is limited (special case for .CH and .LI)


v7.1.0 Released July 10th, 2017

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  • added backorder button in the search results (only when ISPAPI Backorder Module is installed)
  • design optimization


v7.0.0 Released October 10th, 2016

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  • compatible with WHMCS 7.0 or higher
  • compatible with PHP 7
  • user interface redesign
  • new README.pdf


v6.0.6 Released September 16th, 2016

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  • workaround for uses that do not have mb_detect_encoding function in PHP


v6.0.5 Released March 14th, 2016

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  • fixed issue: wrong currency used when customer was logged in


See also

OpenSRS Domains Pro

The OpenSRS Domains Pro module allows you to register, renew and transfer domains from an ever-expanding selection of TLDs, including many new gTLDs. This module supports domain locking and WHOIS Privacy for select TLDs, as well as WHMCS Domain Sync.

ISPAPI Registrar Module

The ISPAPI Registrar Module connects WHMCS to your HEXONET account.

ZA Domains CO.ZA WHMCS Module - ZACR EPP

ZA Domains CO.ZA WHMCS Module - Free Module for CO.ZA Domain Resellers and Domain Registrars

Slimsite website builder - Freemium plan available

Sell the best website builder. Add 6 website builder plans, including a freemium plan.

ISPAPI Pricing Importer Module

Quickly update your WHMCS domain pricing list