On the main page, there is "Wildcard search" which supports search in the GC code of all the caches. With a search "GC*32*" (without quotes), you will get a list of all the caches coitaining number 32 in the GC code including the first one GC132
You can also append your country name such as "GC*32* Czechia" to get list of caches only in Czechia (the oldest one is GCE832).
The same can be achieved with the advanced search (for paying members).