The Do Not Originate (DNO) list
Published: 23 February 2022
Last updated: 24 November 2025
The Do Not Originate list is used to record telephone numbers that are reserved for inbound calls. It's an effective way of combating the rise of spoofed calls.
New rules to protect people and businesses against mobile messaging scams
Published: 29 October 2025
Mobile phone users are set to be better protected from messaging scams, under new rules proposed by Ofcom for mobile providers to follow.
Consultation: Combatting mobile messaging scams
Published: 29 October 2025
We are proposing new rules on how mobile providers must stop scammers from sending mobile messages.
Enforcement programme into phone and text scams
Published: 1 February 2024
Last updated: 17 October 2025
Ofcom has launched an enforcement programme to ensure telecoms providers follow rules and best practices to protect consumers from phone and text scams.
Beware of scam calls claiming to be from Ofcom
Published: 25 September 2025
We have been made aware of scam calls taking place over the past few days, in which scammers claiming to be from Ofcom have obtained personal information from members of the public.
Cracking down on scam calls from abroad
Published: 21 July 2025
Ofcom is today proposing to strengthen its guidance on how telecoms companies should protect people in the UK from international calls that imitate UK mobile numbers.
Consultation: Tackling scam calls from abroad
Published: 21 July 2025
We are proposing changes to our CLI Guidance, on how providers should process calls from abroad that appear to present a UK mobile number, to protect people and businesses from spoofing.
New blocking requirements to protect consumers from scam calls from abroad
Published: 29 January 2025
Phone providers must now all block calls from abroad which imitate UK landline numbers, under strengthened industry guidance which has now come into force.
Call for input: Options to address mobile spoofing
Published: 29 July 2024
Last updated: 6 December 2024
This call for input seeks initial views and evidence on the effectiveness, costs, risks and timescales of different options to address spoofed UK mobile numbers.
Call for input: Reducing mobile messaging scams
Published: 29 July 2024
Last updated: 6 December 2024
This Call for input covers Short Message Service (SMS) and Rich Communications Services (RCS).