diff --git a/README.md b/README.md
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 ## Index
 
-* [Animals](#animals)
-* [Anime](#anime)
-* [Anti-Malware](#anti-malware)
-* [Art & Design](#art--design)
-* [Authentication & Authorization](#authentication--authorization)
-* [Blockchain](#blockchain)
-* [Books](#books)
-* [Business](#business)
-* [Calendar](#calendar)
-* [Cloud Storage & File Sharing](#cloud-storage--file-sharing)
-* [Continuous Integration](#continuous-integration)
-* [Cryptocurrency](#cryptocurrency)
-* [Currency Exchange](#currency-exchange)
-* [Data Validation](#data-validation)
-* [Development](#development)
-* [Dictionaries](#dictionaries)
-* [Documents & Productivity](#documents--productivity)
-* [Email](#email)
-* [Entertainment](#entertainment)
-* [Environment](#environment)
-* [Events](#events)
-* [Finance](#finance)
-* [Food & Drink](#food--drink)
-* [Games & Comics](#games--comics)
-* [Geocoding](#geocoding)
-* [Government](#government)
-* [Health](#health)
-* [Jobs](#jobs)
-* [Machine Learning](#machine-learning)
-* [Music](#music)
-* [News](#news)
-* [Open Data](#open-data)
-* [Open Source Projects](#open-source-projects)
-* [Patent](#patent)
-* [Personality](#personality)
-* [Phone](#phone)
-* [Photography](#photography)
-* [Programming](#programming)
-* [Science & Math](#science--math)
-* [Security](#security)
-* [Shopping](#shopping)
-* [Social](#social)
-* [Sports & Fitness](#sports--fitness)
-* [Test Data](#test-data)
-* [Text Analysis](#text-analysis)
-* [Tracking](#tracking)
-* [Transportation](#transportation)
-* [URL Shorteners](#url-shorteners)
-* [Vehicle](#vehicle)
-* [Video](#video)
-* [Weather](#weather)
+- [Index](#index)
+  - [Animals](#animals)
+  - [Anime](#anime)
+  - [Anti-Malware](#anti-malware)
+  - [Art \& Design](#art--design)
+  - [Authentication \& Authorization](#authentication--authorization)
+  - [Blockchain](#blockchain)
+  - [Books](#books)
+  - [Business](#business)
+  - [Calendar](#calendar)
+  - [Cloud Storage \& File Sharing](#cloud-storage--file-sharing)
+  - [Continuous Integration](#continuous-integration)
+  - [Cryptocurrency](#cryptocurrency)
+  - [Currency Exchange](#currency-exchange)
+  - [Data Validation](#data-validation)
+  - [Development](#development)
+  - [Dictionaries](#dictionaries)
+  - [Documents \& Productivity](#documents--productivity)
+  - [Email](#email)
+  - [Entertainment](#entertainment)
+  - [Environment](#environment)
+  - [Events](#events)
+  - [Finance](#finance)
+  - [Food \& Drink](#food--drink)
+  - [Games \& Comics](#games--comics)
+  - [Geocoding](#geocoding)
+  - [Government](#government)
+  - [Health](#health)
+  - [Jobs](#jobs)
+  - [Machine Learning](#machine-learning)
+  - [Music](#music)
+  - [News](#news)
+  - [Open Data](#open-data)
+  - [Open Source Projects](#open-source-projects)
+  - [Patent](#patent)
+  - [Personality](#personality)
+  - [Phone](#phone)
+  - [Photography](#photography)
+  - [Programming](#programming)
+  - [Science \& Math](#science--math)
+  - [Security](#security)
+  - [Shopping](#shopping)
+  - [Social](#social)
+  - [Sports \& Fitness](#sports--fitness)
+  - [Test Data](#test-data)
+  - [Text Analysis](#text-analysis)
+  - [Tracking](#tracking)
+  - [Transportation](#transportation)
+  - [URL Shorteners](#url-shorteners)
+  - [Vehicle](#vehicle)
+  - [Video](#video)
+  - [Weather](#weather)
+- [License](#license)
 
 ### Animals
 API | Description | Auth | HTTPS | CORS |
@@ -924,7 +926,6 @@ API | Description | Auth | HTTPS | CORS |
 | [adresse.data.gouv.fr](https://adresse.data.gouv.fr) | Address database of France, geocoding and reverse | No | Yes | Unknown |
 | [Airtel IP](https://sys.airtel.lv/ip2country/1.1.1.1/?full=true) | IP Geolocation API. Collecting data from multiple sources | No | Yes | Unknown |
 | [Apiip](https://apiip.net/) | Get location information by IP address | `apiKey` | Yes | Yes |
-| [apilayer ipstack](https://ipstack.com/) | Locate and identify website visitors by IP address | `apiKey` | Yes | Unknown |
 | [Battuta](http://battuta.medunes.net) | A (country/region/city) in-cascade location API | `apiKey` | No | Unknown |
 | [BigDataCloud](https://www.bigdatacloud.com/ip-geolocation-apis) | Provides fast and accurate IP geolocation APIs along with security checks and confidence area | `apiKey` | Yes | Unknown |
 | [Bing Maps](https://www.microsoft.com/maps/) | Create/customize digital maps based on Bing Maps data | `apiKey` | Yes | Unknown |