| CV-Helios Network | ||
| CV-observers in June 2017 | 31 | 599 |
| Observer number and name | Country | No. obs. |
| CV-001 KJELL INGE MALDE | NORWAY | 15 |
| CV-010 FRANKY DUBOIS | BELGIUM | 29 |
| CV-019 ELMAR JUNKER | GERMANY | 2 |
| CV-020 MANFRED HOLL | GERMANY | 21 |
| CV-021 HOWARD BARNES | NEW ZEALAND | 11 |
| CV-022 ANDREAS VIERTEL | GERMANY | 29 |
| CV-023 HARTMUT BRETSCHNEIDER | GERMANY | 20 |
| CV-034 VVS BELGIUM | BELGIUM | 29 |
| CV-044 GERD SCHROEDER | GERMANY | 24 |
| CV-068 SVEN OVE THIMM | DENMARK | 17 |
| CV-077 ANDREW JOHNSTON | UNITED KINGDOM | 22 |
| CV-080 JAN JANSSENS | BELGIUM | 5 |
| CV-082 PIOTR URBANSKI | POLAND | 29 |
| CV-086 TOS POLAND | POLAND | 30 |
| CV-091 GRZEGORZ DALEK | POLAND | 27 |
| CV-102 PAULO ROBERTO MOSER | BRAZIL | 7 |
| CV-103 OCTAAF STEEN | BELGIUM | 29 |
| CV-104 LIEVE MEEUS | BELGIUM | 7 |
| CV-105 ALEXEY RYBACK | RUSSIA | 10 |
| CV-107 MONTY LEVENTHAL | AUSTRALIA | 16 |
| CV-116 TERJE BJERKGAARD | NORWAY | 5 |
| CV-122 VLASTISLAV FEIK | CZECH REPUBLIC | 28 |
| CV-135 GEMA ARAUJO | SPAIN | 29 |
| CV-136 FAUSTINO GARCIA | SPAIN | 13 |
| CV-139 JAVIER ALONSO | SPAIN | 27 |
| CV-151 JEFFREY CARELS | BELGIUM | 22 |
| CV-181 ADAM DERDZIKOWSKI | POLAND | 12 |
| CV-201 SANTANU BASU | INDIA | 22 |
| CV-202 JORDI ZAMORA | SPAIN | 26 |
| CV-207 ONDREJOV OBS. (AI CAS) | CZECH REPUBLIC | 23 |
| CV-209 CAIO CRESPO MORAES | BRAZIL | 13 |