What do letters in dial codes mean?

[haumacher]

E.g. in line 199: SRB 381 p

country-codes/data/country-codes.csv

Line 199 in b6297ec

SRB,381 p,SRB,rb,Yes,688,2648,RIKV,YG,RS,SRB,SRB,SRB,la República de Serbia,1,,Serbie,Serbie (la),Serbian Dinar,Республика Сербия,Serbia,RSD,,Serbia,941,塞尔维亚共和国,la République de Serbie,Сербия,688,39,150,صربيا,2,جمهورية صربيا,塞尔维亚,,,Serbia,the Republic of Serbia,塞尔维亚,Serbia,SERBIA,,Europe,صربيا,Southern Europe,Сербия,World,Belgrade,EU,.rs,"sr,hu,bs,rom",6290252,Serbia,Z2,https://www.wikidata.org/wiki/Q403

or here:

country-codes/data/country-codes.csv

Line 188 in b6297ec

SHN,290 n,SHN,xj,Territory of GB,654,207,SH,HE,SH,SHN,HEL,SH,,1,11,Sainte-Hélène,,Saint Helena Pound,,,SHP,,,654,,,,654,202,2,سانت هيلانة,2,,,,Western Africa,Santa Elena,,圣赫勒拿,Saint Helena,"SAINT HELENA, ASCENSION AND TRISTAN DA CUNHA",,Africa,,Sub-Saharan Africa,Остров Святой Елены,World,Jamestown,AF,.sh,en-SH,3370751,Saint Helena,,https://www.wikidata.org/wiki/Q192184

[barcar]

I think this comes from the Statoids data...

https://www.statoids.com/wab.html#notep

n Ascension Island's code is 247. p Kosovo has been given the code 383, to take effect "by 2015".

[haumacher]

This looks like a footnote marker. Seems to be a bug to add it as plain letter to the database?