ISRCs starting with 'X' or 'Y'

question
recording
isrc
Tags: #<Tag:0x00007fe3db1d05a8> #<Tag:0x00007fe3db1d0328> #<Tag:0x00007fe3db1d0058>

#1

Does anyone know what are ISRCs starting with ‘X’ or ‘Y’ (e.g, Y72800008715)? SoundExchange is full of them, but MusicBrainz considers them invalid. I understand that an ISRC must begin with a country code, which those are not. What are they then?


#2

Where are you seeing them? When I try to look up your example at https://isrc.soundexchange.com/ it just tells me “server error”…

The ISRC Handbook doesn’t mention them, AFAICT.


#3

Here.


#4

From what I can gather X in general means user-assigned while Y means unassigned. I’m curious to know the answer to this too!


#5

According to Wikipedia, XA through XZ is available for user-assigned country codes (which is why MB has things like XE fir Europe). Yx is not shown as valid in any way. Even if it was, an alpha-2 code can only have letters (avoiding collating sequence issues), so Y7 can never be a valid prefix for an ISRC.