Here in Austria digitalization officially started in the mid 1980ies, but the last remote parts of Vienna were analog until 2001 or so, and I even suspect there are still some analog exchanges in rural areas (at least the numbering scheme indicates it). In Vienna analog lines were pretty easy to spot because they usually had a slightly different numbering scheme. Single lines had a 6 digit number, party lines were 7 digit. Digital numbers are all 7 digit, but some combinations aren't used any more, for example the 42x, 43x, 45x and 46x range disappeared completely. 42 and 43 were usually moved to 40x (single lines were usually just extended to 402x and 403x, new numbers are in the 405x to 408x area).
In rural areas all (or most) 3 digit numbers are now 4 digit (spoiled some quite cool numbers, for example 555 is now 7555), but in some remote places there are still 3 digit numbers, even though I definitely know they were supposed to be changed to 4 digits years ago. So maybe these areas are still analog. Or they just didn't see any need to change the numbers because of all the new cell phones, so maybe they didn't need the extra capacity.
