Since all this information would be easy to compile from public data given some time and math, here are the alliance blocs that existed at the time the warnings were sent (roughly, at least):
EC:
Alliance bloc above limit: Sirion, Caligus, Nivemus, Eponllyn, Shadowdale, and Redhaven
Regions: 69
Over by: 30
BT:
Alliance bloc above limit: Thalmarkin, Ar Agyr, Gotland, Grehkia, Shattered Vales, and Obia'Syela
Regions: 68
Over by: 35
Colonies:
Alliance bloc above limit: Lukon, Oritolon, Halcyon, and Portion
Regions: 23
Over by: 4
Dwilight:
Alliance bloc above limit: Madina, D'Hara, Astrum, Morek Empire, Arnor, Westgard, and Avernus
Regions: 64
Over by: 28
Alliance bloc above limit: Luria Nova, Swordfell, Sol, Luria Ferrata, and Tol Goldora
Regions: 42
Over by: 6