According to the Amateur Radio Cluster Network for the week of Sunday, 18th April, through Sunday, 25th April there were 210 countries active.

Countries available:

3A, 3B8, 3D2, 3W, 4J, 4L, 4O, 4S, 4U1U, 4X, 5B, 5H, 5R, 5T, 5U, 5V, 5W, 5X, 5Z, 6W, 6Y, 7X, 8P, 8Q, 8R, 9A,
9G, 9H, 9J, 9K, 9M2, 9M6, 9N, 9V, 9Y,

A2, A4, A5, A6, A7, A9, AP, BV, BY, C3, C9, CE, CE9, CM, CN, CP, CT, CT3, CU, CX, D2, D4, DL, DU, E5/n, E5/s,
E7, EA, EA6, EA8, EA9, EI, EK, EP, ER, ES, EU, EX, EY, F, FG, FK, FM, FO, FR, FS, FY, G, GD, GI, GJ, GM, GU, GW, HA, HB, HB0, HC, HH, HI, HK, HL, HP, HR, HS, HV, HZ, I, IS, J3, J6, J7, JA, JD/o, JT, JW, JY,

K, KG4, KH0, KH2, KH6, KH9, KL, KP2, KP4, LA, LU, LX, LY, LZ, OA, OD, OE, OH, OH0, OK, OM, ON, OX, OY, OZ, P2, P4, PA, PJ2, PJ4, PY, PZ, S0, S2, S5, S7, SM, SP, ST, SU, SV, SV5, SV9, T5, T7, TA, TF, TG, TI, TK, TR, TU, TY, TZ,

UA, UA2, UA9, UK, UN, UR, V3, V5, V7, V8, VE, VK, VP2E, VP2M, VP8, VP8/h, VP9, VR, VU, XE, XW, XX9, YA, YB, YI, YJ, YL, YN, YO, YS, YU, YV, Z3, Z6, Z8, ZA,s ZB, ZC4, ZD7, ZF, ZL, ZL7, ZP, ZS

* PLEASE NOTE: The report "could" contain "Pirate/SLIM" operations or more likely a "BUSTED CALLSIGN". As always, you never know -
"Work First Worry Later".