Wikipedia
GccTLD
gccTLD or Generic Country Code Top Level Domain refers to certain country code TLDs ( ccTLDs) which Google considers to be more like traditional generic TLDs ( gTLDs) rather than "country" targeted ones, and treats them accordingly for purposes of search engine optimization and indexing.
Some ccTLDs that are considered to be gccTLDs by Google include: ( .ad), ( .as), ( .bz), ( .cc), ( .cd), ( .co), ( .dj), ( .fm), ( .io), ( .la), ( .me), ( .ms), ( .nu), ( .sc), ( .sr), ( .su), ( .tv), ( .tk), ( .ws). This list can be found on Google's website.