Hello Don, 

if you are going for gtld numbers - it could be done via CZDS (and a script checking for an IDN in the zone files)
and ccTLD numbers could be obtained via ccNSO (at least I think so, due to some of ccTLDs not willing to share zone files)?

P.s: some of old tlds offering access to their zone files too (others could be asked for the estimate numbers of IDNs).

Sincerely Yours,

Maxim Alzoba
Special projects manager,
International Relations Department,
FAITID

m. +7 916 6761580(+whatsapp)
skype oldfrogger

Current UTC offset: +3.00 (.Moscow)

On 16 Jan 2018, at 11:18, Don Hollander <don.hollander@icann.org> wrote:

Thanks Andre & Michael.

Different numbers, interesting.   But they give me a scale.

Any idea where I might find IDN ccTLD registration numbers?

And how many have MX records?

D


On 16/01/2018, at 8:58 PM, Andre Schappo <A.Schappo@lboro.ac.uk> wrote:


Don Hollander
Universal Acceptance Steering Group
Skype: don_hollander