| Contracting Parties/Signatories | Signature | Instrument | In Force | Details |
|---|---|---|---|---|
| Armenia | June 4, 1999 | January 31, 2000 | ||
| Azerbaijan | June 4, 1999 | January 31, 2000 | ||
| Belarus | June 4, 1999 | January 31, 2000 | ||
| Georgia | June 4, 1999 | January 31, 2000 | ||
| Kazakhstan | June 4, 1999 | January 31, 2000 | ||
| Kyrgyzstan | June 4, 1999 | Ratification : December 27, 1999 | January 31, 2000 | |
| Republic of Moldova | June 4, 1999 | Ratification : January 3, 2002 | January 3, 2002 | |
| Russian Federation | June 4, 1999 | Ratification : January 3, 2006 | January 3, 2006 | |
| Tajikistan | June 4, 1999 | January 31, 2000 | ||
| Ukraine | June 4, 1999 | Ratification : December 13, 1999 | January 31, 2000 | |
| Uzbekistan | June 4, 1999 | January 31, 2000 |