Are These Tracking Number Real or Fake?

[cmartins1963]

Hi

I live in Brazil and bought some stuff from different sellers in China.
They sent me 02 tracking numbers very different from those I'm used to. This time they have 18 digits (letters/numbers), instead of the usual 13 digits.
Since the first package was posted more than a week ago without any  tracking updates or possibility of location,  I'm starting to get worried.
The tracking numbers are:
 

IDxxxxxxxxxxxxxxCN
IDxxxxxxxxxxxxxxCN

Am I worried without reason or those tracking numbers are just like that.
Thank you in advance.

[ed8108]

If you do not receive these purchases, open item not received cases.

[tiagmerc]

Estou na mesma situação que você.

Qual foi o resultado?