The citizenlab.ca page also mentions Denmark, Sweden and Montenegro, so it’s not like Norway is the only European country among a group of otherwise African and Asian countries. This being said: Telenor, Norway’s state-owned telecommunications company, also operates in many of the countries mentioned. Could that be a connection?

• CelcomDigi is the largest wireless carrier in Malaysia. Its largest shareholders are Axiata and Telenor, at 33.1% each.
• True Corporation is a telecommunications conglomerate in Thailand. Charoen Pokphand Group and Telenor hold equal ownership of 30% of True’s shares as of March 2023.
• Grameenphone is Bangladesh’s largest telecommunications conglomerate by both revenue and users. Telenor owns 55.8%. Grameenphone even uses Telenor’s logo, a stylized T!
• Telenor in Norway, Sweden and Denmark is owned 100% by Telenor, unsurprisingly.
• Telenor Montenegro was sold to investment fund PPF in 2018 and rebranded to One Montenegro in 2022.