On Tue, Jan 31, 2017 at 5:50 AM, Hubert Kario <[email protected]> wrote:
> On Monday, 30 January 2017 23:48:51 CET Peter Bowen wrote:
>> See notes inline about known cities with numbers in their name.
>>
>> On Mon, Jan 30, 2017 at 10:39 AM, Peter Bowen <[email protected]> wrote:
>> > While it is very hard to validate the subject content of certificates
>> > outside of DNS names, there are a number of heuristics that may be
>> > useful to trigger a deeper check to ensure that the data is accurate.
>> >
>> > A couple of these that I've found useful are:
>> >
>> > 1) If stateOrProvince or Locality type attributes contain a Number,
>> > this is a red flag.  I've yet to find any verified legitimate case
>> > where this is correct
>>
>> Of course I hit send and then find a least one valid cases of a number:
>>
>> In Egypt (EG) there is a city called "6th of October".
>>
>> In the Czech Republic (CZ), ISO lists some subdivisions as having
>> numbers (https://www.iso.org/obp/ui/#iso:code:3166:CZ).  Wikipedia
>> seems to suggest that these might not be current
>> (https://en.wikipedia.org/wiki/Regions_of_the_Czech_Republic), but I
>> think it should be considered reasonable for a CA to rely upon ISO
>> 3166.
>
> No, they still exist:
> https://en.wikipedia.org/wiki/Prague_1
> http://www.praha1.cz/cps/index.html
> (note the address at the bottom of the page)

Is the number part of the name of the stateOrProvince or is it a
postalCode?  I know in Dublin there were numbered "postal districts"
prior to the implementation of Eircode, but the city and county are
both "Dublin" not "Dublin 8" or such.

> Red Hat Czech s.r.o., Purkyňova 99/71, 612 45, Brno, Czech Republic

Am I parsing this correctly as follows?

Company: Red Hat Czech s.r.o.
Street Address: Purkyňova 99/71
Postal Code: 612 45
City: Brno
Country: Czech Republic

Does this imply that addresses in the Czech Republic do not use a
state or province?

Thanks,
Peter
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