Class 21

nl

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Class 21

Quality:

British Rail Class 21 - class of 58 Bo′Bo′ 1000/1100hp diesel-electric locomotives. Article “Class 21” in Dutch Wikipedia has 9 points for quality (as of July 1, 2025). The article contains 0 references and 7 sections.

This article has the best quality in English Wikipedia. Also, this article is the most popular in that (Dutch) language version.

Since the creation of article “Class 21”, its content was written by 6 registered users of Dutch Wikipedia and edited by 66 registered Wikipedia users in all languages.

The article is cited 61 times in Dutch Wikipedia and cited 341 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (Dutch): #5894 in April 2015
  • Global: #105511 in April 2015

The highest popularity rank from 2008:

  • Local (Dutch): #152139 in August 2019
  • Global: #922135 in January 2022

There are 3 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2025 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1English (en)
British Rail Class 21 (NBL)
32.6159
2Dutch (nl)
Class 21
9.0075
3Simple English (simple)
British Rail Class 21
5.0526
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "Class 21" in all the time
#LanguagePopularity awardRelative popularity
1English (en)
British Rail Class 21 (NBL)
115 693
2Simple English (simple)
British Rail Class 21
3 613
3Dutch (nl)
Class 21
1 169
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2025

The most popular language versions of the article "Class 21" in June 2025
#LanguagePopularity awardRelative popularity
1English (en)
British Rail Class 21 (NBL)
996
2Simple English (simple)
British Rail Class 21
56
3Dutch (nl)
Class 21
7
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "Class 21" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1English (en)
British Rail Class 21 (NBL)
54
2Dutch (nl)
Class 21
6
3Simple English (simple)
British Rail Class 21
6
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2025

Language versions of the article "Class 21" with the highest AI in June 2025
#LanguageAI awardRelative AI
1English (en)
British Rail Class 21 (NBL)
0
2Dutch (nl)
Class 21
0
3Simple English (simple)
British Rail Class 21
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "Class 21" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1English (en)
British Rail Class 21 (NBL)
154
2Simple English (simple)
British Rail Class 21
126
3Dutch (nl)
Class 21
61
More...

Scores

Estimated value for Wikipedia:
Dutch:
Global:
Popularity in June 2025:
Dutch:
Global:
Popularity in all years:
Dutch:
Global:
Authors in June 2025:
Dutch:
Global:
Registered authors in all years:
Dutch:
Global:
Citations:
Dutch:
Global:

Quality measures

Interwikis

#LanguageValue
enEnglish
British Rail Class 21 (NBL)
nlDutch
Class 21
simpleSimple English
British Rail Class 21

Popularity rank trends

Best Rank Dutch:
#152139
08.2019
Global:
#922135
01.2022

AI rank trends

Best Rank Dutch:
#5894
04.2015
Global:
#105511
04.2015

Local AI rank history

Languages comparison

Important global interconnections (July 2024 – June 2025)

Wikipedia readers most often find their way to information on British Rail Class 21 from Wikipedia articles about List of British Rail modern traction locomotive classes, Woodham Brothers, British Rail Class 22, British Rail Class 29 and List of British Rail power classifications. Whereas reading the article about British Rail Class 21 people most often go to Wikipedia articles on British Rail Class 29, British Rail Class 22, British Rail Class 21, North British Locomotive Company and British Rail Class 26.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 15 February 2026

On 15 February 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: Jeffrey Epstein, Wuthering Heights, 2026 Winter Olympics, Epstein files, Ilia Malinin, Wuthering Heights, Ghislaine Maxwell, Lucas Pinheiro Braathen, 2026 Winter Olympics medal table, Valentine's Day.

In Dutch Wikipedia the most popular articles on that day were: Femke Kok, Jutta Leerdam, Bart Veldkamp, Anna Boersma, Pascale Naessens, Jens van 't Wout, Medaillespiegel van de Olympische Winterspelen 2026, Nij Beets, Estelle Cruijff, Ireen Wüst.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 44 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2025. When calculating current popularity and AI of articles data from June 2025 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2025... More information