We are happy to announce the z39.50 service of FMIRO CCU (FOSMA Maritime Institute & Research Organisation, Kolkata branch) has achieved 100% reliability as an open access z39.50 search target for bibliographic materials related to maritime and ship operations. With this, FMIRO CCU becomes the fifth publicly announced z39.50 server from India which is listed on IRSpy service provided by Index Data.
FMIRO CCU’s nascent library is hosted on L2C2 Technologies‘s cloud platform using Koha ILS. The FMIRO OPAC is available at : http://fosma-opac.l2c2.co.in/. The collection at FMIRO is a specialized collection focused solely on topics related to maritime, marine engineering, ship building, ship operations and nautical sciences. It is still a very small collection that is quite literally growing by the day.
Host connection reliability
Host connection reliability measures the reliability of the target only in its ability to respond to connections: the display indicates the number of successful connections in the last two months, the total number of attempted connections in that time, and the percentage of successful connections. For example, reliability of 9/15 = 60% indicates that fifteen attempts have been made to connect to the server in the last two months, of which nine (60%) have been successful. 
IRSpy maintains a global registry of information retrieval targets, about 1295 as per recent count (http://irspy.indexdata.com/stats.html), supporting protocols like ANSI/NISO Z39.50 (ISO 23950) and SRU/SRW web services.
About Index Data
Short answer: The guys who publish the Zebra indexing engine and YAZ toolkit and software libraries.
Long answer: Since 1994, Index Data has offered software development, consulting and integration with a focus on search. Our pioneering involvement in open source and open standards dates back to the first release of the YAZ toolkit for Z39.50 in 1995.