Nick Szabo 🔑 on Twitter: "(Earliest?) design for chain-secured tokens (without blocks): replicated "names referring to the property, and the public key [of] its current owner, signed by the previous owner, along with a chain of previous such titles." https://t.co/wAQFTXFmFf"

Country	Code	For customers of
United States	40404	(any)
Canada	21212	(any)
United Kingdom	86444	Vodafone, Orange, 3, O2
Brazil	40404	Nextel, TIM
Haiti	40404	Digicel, Voila
Ireland	51210	Vodafone, O2
India	53000	Bharti Airtel, Videocon, Reliance
Indonesia	89887	AXIS, 3, Telkomsel, Indosat, XL Axiata
Italy	4880804	Wind
3424486444	Vodafone
» See SMS short codes for other countries