Proxima colony

From Memory Alpha, the free Star Trek reference

In 2154, a Klingon warship was spotted near Proxima colony after a group of augments commandeered a Klingon Bird-of-Prey. It was speculated that this ship could have been conducting reconnaissance for a possible future strike which ultimately didn't happen. (ENT: "Borderland")

Later that year, crew members from a Rigelian ship were hired by the Klingons to kidnap Doctor Phlox. The crew filed a false flight plan listing Proxima colony as their destination. (ENT: "Affliction")

It is likely that this colony exists on one of the planets orbiting Proxima Centauri. It is unclear whether the Alpha Centauri colony is the same colony or another one in the Alpha Centauri system.

Alpha Centauri system
Alpha Centauri A • Alpha Centauri B • Proxima Centauri
Centauri VII • Proxima colony