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Telecom networks, spectrum and internet infrastructure
Telecom networks and the physical internet: mobile generations and spectrum, telecom law and its regulator, rural broadband, fibre, subsea cables and their landing stations, and the rules of the net. It serves GS3 answers on infrastructure and communications.
Showing 1 of 4 subjects, those that changed from 1 to 15 July 2026.Show all
Commercial call number series
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The 1600 number series is reserved for service calls from regulated financial entities and government, and the 140 series for promotional calls, so that a subscriber can tell one from the other and block the second.
What changed
10 Jul 2026New subjectalso in news
- The 1600 series is reserved for service calls from regulated financial entities and government, and may not be tagged or filtered. The 140 series is for promotional calls, which a subscriber can block only through the Do Not Disturb registry.