AT: "ar" Block 27 was a region of Klingon space. The Klingon homeworld and capital planet Qo'noS was located in sector 70 in Block 27.
In 2259, in the alternate reality, Khan Noonien Singh used a portable transwarp beaming device to flee from his attack on Starfleet Headquarters in San Francisco with a long-range site-to-site transport all the way from the stolen jumpship 208 on Earth to Ketha Province on Qo'noS in block 27. (Star Trek Into Darkness, display graphic)